{"title":"INSANE PERFORMANCE","description":null,"products":[{"product_id":"bmw-s55-crank-hub-upgrade-insane-4-pin","title":"BMW S55 Crank Hub Upgrade – Insane Performance 4-Pin | Supply \u0026 Fit","description":"\u003cp\u003e\u003cstrong\u003eComplete supply \u0026amp; fit package for BMW M2 Competition, M3 and M4.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUpgrade the factory BMW S55 crank hub arrangement with the \u003cstrong\u003eInsane Performance one-piece 4-pin crank hub\u003c\/strong\u003e, professionally installed by Swift Performance at our specialist workshop in Stoke Mandeville, Aylesbury.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e£1,950 including VAT – supplied and fitted.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInsane Performance one-piece 4-pin crank hub\u003c\/li\u003e\n\u003cli\u003eComplete professional installation\u003c\/li\u003e\n\u003cli\u003eReplacement gaskets, seals and required fixings\u003c\/li\u003e\n\u003cli\u003eNew BMW S55 oil filter\u003c\/li\u003e\n\u003cli\u003eSuitable BMW LL-04 specification engine oil\u003c\/li\u003e\n\u003cli\u003ePerformance oil upgrades available for tuned and track-focused cars\u003c\/li\u003e\n\u003cli\u003eWorkshop consumables included\u003c\/li\u003e\n\u003cli\u003eInstallation at Swift Performance in Aylesbury, Buckinghamshire\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFlexible payment options may be available at checkout for eligible customers.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eThe BMW S55 Crank Hub – Why Owners Upgrade It\u003c\/h2\u003e\n\u003cp\u003eThe BMW S55 engine used in the F87 M2 Competition, F80 M3 and F82\/F83 M4 has a factory crank hub and timing drive arrangement that has become a well-known concern among S55 owners and BMW performance specialists.\u003c\/p\u003e\n\u003cp\u003eThe factory arrangement relies on clamping force and friction between the crankshaft, crank hub and timing components rather than using a positive keyed or pinned connection to mechanically locate the hub to the crankshaft.\u003c\/p\u003e\n\u003cp\u003eIn most cars the factory arrangement can operate without issue. However, if the hub moves relative to the crankshaft, the engine timing can also move out of its intended position. This is commonly referred to as a \u003cstrong\u003eslipped\u003c\/strong\u003e or \u003cstrong\u003espun crank hub\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Can Happen if an S55 Crank Hub Slips?\u003c\/h3\u003e\n\u003cp\u003eThe effect depends on how far the timing moves. Possible symptoms can include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrivetrain malfunction warnings\u003c\/li\u003e\n\u003cli\u003eEngine timing fault codes\u003c\/li\u003e\n\u003cli\u003eReduced-power or limp mode\u003c\/li\u003e\n\u003cli\u003ePoor or irregular engine running\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a more severe event, the engine timing can move far enough to create the risk of internal engine damage.\u003c\/p\u003e\n\u003cp\u003eNot every S55 engine will suffer a crank hub issue. However, many owners choose to upgrade the crank hub preventatively, particularly when the vehicle is tuned, producing increased torque, regularly driven hard or used on track.\u003c\/p\u003e\n\u003cp\u003eFor owners planning further performance upgrades, addressing the crank hub arrangement beforehand can provide additional confidence in the engine's timing drive setup.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWant to understand the S55 crank hub issue in more detail?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRead our complete \u003ca href=\"https:\/\/swiftperformance.co.uk\/blogs\/bmw-technical-guides\/bmw-s55-crank-hub-guide\"\u003eBMW S55 Crank Hub Guide\u003c\/a\u003e, covering symptoms, the factory crank hub arrangement, tuned vs standard cars and how pinned 4-pin upgrades work.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eHow Does a 4-Pin Crank Hub Upgrade Address the Factory Arrangement?\u003c\/h2\u003e\n\u003cp\u003eThe purpose of a pinned crank hub upgrade is to add a positive mechanical connection between the upgraded crank hub and the crankshaft rather than relying solely on the original friction-based arrangement.\u003c\/p\u003e\n\u003cp\u003eDuring installation of the Insane Performance 4-pin system, the crankshaft is precisely drilled using the appropriate fixture and the upgraded hub is mechanically located using four pins.\u003c\/p\u003e\n\u003cp\u003eInstallation requires accurate engine timing, crankshaft positioning and specialist tooling, which is why this is supplied as a complete workshop installation rather than simply selling the component.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy We Always Remove the Sump\u003c\/h2\u003e\n\u003cp\u003eInstalling a pinned crank hub requires the crankshaft to be precisely drilled to create the locating points for the new hub.\u003c\/p\u003e\n\u003cp\u003eAt Swift Performance, we always remove the engine sump as part of our S55 crank hub installation.\u003c\/p\u003e\n\u003cp\u003eSome crank hub installations are carried out with the sump left in position. While this can reduce the amount of labour involved, drilling the crankshaft produces metal swarf and drill shavings.\u003c\/p\u003e\n\u003cp\u003eOur approach is to remove the sump so that we have proper access to clean and inspect the area after drilling, helping to minimise the risk of metal debris being left inside the engine.\u003c\/p\u003e\n\u003cp\u003eAs part of the process we therefore include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemoval and refitting of the engine sump\u003c\/li\u003e\n\u003cli\u003eCleaning and inspection following the drilling procedure\u003c\/li\u003e\n\u003cli\u003eReplacement sump gasket\u003c\/li\u003e\n\u003cli\u003eReplacement sump and oil-pump fixings where required\u003c\/li\u003e\n\u003cli\u003eFresh engine oil\u003c\/li\u003e\n\u003cli\u003eNew BMW S55 oil filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor us, sump removal is not an optional extra. It is part of the installation procedure included in our £1,950 supplied-and-fitted price.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eAbout the Insane Performance 4-Pin Crank Hub\u003c\/h2\u003e\n\u003cp\u003eFor this package, Swift Performance uses the \u003cstrong\u003eInsane Performance one-piece 4-pin crank hub\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eInsane Performance specifies the hub as a one-piece design manufactured from heat-treated steel and precision-machined using 5-axis CNC equipment.\u003c\/p\u003e\n\u003cp\u003eSwift Performance uses the \u003cstrong\u003e4-pin version\u003c\/strong\u003e, providing four mechanical locating points between the upgraded crank hub and crankshaft as part of the installation.\u003c\/p\u003e\n\u003cp\u003eThe one-piece design replaces the factory multi-piece crank hub arrangement and is designed as an upgraded solution for BMW S55 performance applications.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat's Included for £1,950?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e£1,950 including VAT\u003c\/strong\u003e price is the complete supplied-and-fitted package, not simply the cost of the crank hub.\u003c\/p\u003e\n\u003cp\u003eIncluded:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInsane Performance 4-pin crank hub\u003c\/li\u003e\n\u003cli\u003eProfessional installation by Swift Performance\u003c\/li\u003e\n\u003cli\u003eRocker\/cam cover gasket\u003c\/li\u003e\n\u003cli\u003eSump gasket\u003c\/li\u003e\n\u003cli\u003eRequired sump and oil pump fixings\u003c\/li\u003e\n\u003cli\u003eFuel pump seal\u003c\/li\u003e\n\u003cli\u003eCrankshaft seal\u003c\/li\u003e\n\u003cli\u003eTiming-chain tensioner seal\u003c\/li\u003e\n\u003cli\u003eReplacement cam gear bolts\u003c\/li\u003e\n\u003cli\u003eReplacement crankshaft bolt\u003c\/li\u003e\n\u003cli\u003eBMW S55 oil filter\u003c\/li\u003e\n\u003cli\u003eSuitable BMW LL-04 specification engine oil\u003c\/li\u003e\n\u003cli\u003eWorkshop consumables and waste-oil disposal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTuned or Track-Driven S55?\u003c\/h2\u003e\n\u003cp\u003eOur standard crank hub package includes a suitable \u003cstrong\u003eBMW LL-04 specification engine oil\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor tuned, high-power and track-focused vehicles, upgraded performance engine-oil options are available.\u003c\/p\u003e\n\u003cp\u003eIf you're unsure which oil is appropriate for your vehicle and level of tune, speak to the Swift Performance team before your booking.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eAdditional Work While Your S55 Is With Us\u003c\/h2\u003e\n\u003cp\u003eA crank hub installation involves significant dismantling and access to areas of the S55 engine that would normally require substantial labour to reach.\u003c\/p\u003e\n\u003cp\u003eBecause this access has already been created, there are a number of additional maintenance and performance jobs that can be carried out at significantly reduced labour while the crank hub work is being completed.\u003c\/p\u003e\n\u003cp\u003eIf you are considering any of the following upgrades or maintenance items, having them completed at the same time can avoid paying for much of the same strip-down labour again at a later date.\u003c\/p\u003e\n\n\u003ch3\u003ePopular Add-Ons\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamshaft alignment – additional £220\u003c\/strong\u003e\u003cbr\u003eCamshaft alignment can be carried out while the engine is already prepared for the crank hub procedure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eACL Race Series rod bearings – additional £500\u003c\/strong\u003e\u003cbr\u003eACL Race Series 6B1584H\/STD conrod bearings, new OEM BMW rod bolts and installation when carried out alongside the crank-hub upgrade. Selecting the combined package can avoid approximately six hours of duplicated workshop labour.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBench unlock and bootmod3 installation\/setup – additional £500\u003c\/strong\u003e\u003cbr\u003eAvailable for customers planning to tune their S55 or requiring the appropriate ECU setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSports cat installation – additional £220\u003c\/strong\u003e\u003cbr\u003eReduced installation labour when the sports cats are supplied by Swift Performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/bmw-f8x-m2c-m3-m4-s55-do88-performance-pressure-pipes-turbo-to-intercooler\"\u003eDO88 S55 charge pipes\u003c\/a\u003e – fitting included\u003c\/strong\u003e\u003cbr\u003eFree installation of the DO88 S55 turbo-to-intercooler pressure\/charge pipes when purchased from Swift Performance as part of the crank hub booking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/bmw-f8x-m2c-m3-m4-do88-intercooler-j-pipe-intercooler-to-throttle-body\"\u003eDO88 S55 J-pipe\u003c\/a\u003e – fitting included\u003c\/strong\u003e\u003cbr\u003eFree installation of the DO88 intercooler-to-throttle-body J-pipe when purchased from Swift Performance as part of the crank hub booking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/infinity-design-s55-carbon-intake-for-bmw-m2-competition\"\u003eInfinity Carbon intake installation\u003c\/a\u003e – fitting included\u003c\/strong\u003e\u003cbr\u003eFree installation when the Infinity Carbon intake system is supplied by Swift Performance with the crank hub booking. Also available for \u003ca href=\"\/products\/infinity-design-s55-carbon-intake-for-bmw-m3-m4-f80-f82\"\u003eF80 M3 and F82 M4\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark plug installation – fitting included\u003c\/strong\u003e\u003cbr\u003eSpark plug fitting is included when carried out alongside the crank hub installation. Spark plugs are available separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/products\/itg-profilter-wb-429-bmw-s55-m2-competition-m3-m4-2014-panel-air-filter\"\u003ePerformance panel filter installation\u003c\/a\u003e – fitting included\u003c\/strong\u003e\u003cbr\u003eFree installation when supplied by Swift Performance. \u003ca href=\"\/products\/itg-air-filter-set-s55\"\u003eITG performance panel filters\u003c\/a\u003e are available for S55 applications. BMC performance panel filters are also available – contact us for details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinor service additions – additional £100\u003c\/strong\u003e\u003cbr\u003eAdd the microfilter, Standard Scope, CBS reset and applicable iDrive\/service-history update.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement rocker cover\u003c\/strong\u003e\u003cbr\u003eAvailable on request and worth considering where the existing cover requires replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsane Performance crank seal guard – additional £75\u003c\/strong\u003e\u003cbr\u003eAvailable as an additional upgrade when fitted during the crank hub installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTuned and Track Cars\u003c\/h3\u003e\n\u003cp\u003eFor mapped, high-power or track-driven S55 vehicles, we recommend discussing the engine oil specification with us before the booking.\u003c\/p\u003e\n\u003cp\u003eOur standard package includes a suitable BMW LL-04 specification oil, with upgraded performance oil options available. A 5W-40 grade is one of the options we recommend for appropriate mapped or track-driven applications.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eACL Race Series Rod Bearing Upgrade – £500 With Crank Hub\u003c\/h2\u003e\n\u003cp\u003eWhile the BMW S55 is not generally regarded as having the same widespread rod-bearing reputation as some earlier BMW M engines, connecting-rod bearings are still highly loaded internal engine components and can wear over time.\u003c\/p\u003e\n\u003cp\u003eFor customers who want to address the rod bearings preventatively, we offer an \u003cstrong\u003eACL Race Series rod-bearing upgrade for an additional £500 including VAT when carried out alongside our crank-hub installation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOur standard package uses:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eACL Race Series 6B1584H\/STD conrod bearings\u003c\/li\u003e\n\u003cli\u003eNew OEM BMW connecting-rod bolts\u003c\/li\u003e\n\u003cli\u003eComplete installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Rod Bearings Wear\u003c\/h3\u003e\n\u003cp\u003eThe connecting-rod bearings operate between the crankshaft journals and connecting rods under substantial engine load.\u003c\/p\u003e\n\u003cp\u003eDuring normal operation, the crankshaft journal is supported by a thin hydrodynamic film of engine oil rather than running directly against the bearing surface.\u003c\/p\u003e\n\u003cp\u003eBearing condition can therefore be influenced by factors including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMileage and accumulated engine hours\u003c\/li\u003e\n\u003cli\u003eEngine load and power output\u003c\/li\u003e\n\u003cli\u003eOil condition and contamination\u003c\/li\u003e\n\u003cli\u003eOil pressure and lubrication quality\u003c\/li\u003e\n\u003cli\u003eHigh operating temperatures\u003c\/li\u003e\n\u003cli\u003eRepeated high-RPM or track use\u003c\/li\u003e\n\u003cli\u003eCold operation before the engine oil has reached a suitable operating temperature\u003c\/li\u003e\n\u003cli\u003eGeneral long-term wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe S55 is not automatically expected to suffer rod-bearing failure, but the bearings remain wear components that can be inspected and replaced preventatively where appropriate.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Do Them With the Crank Hub?\u003c\/h3\u003e\n\u003cp\u003eReplacing S55 rod bearings as a separate job requires significant labour simply to gain access to the bottom of the engine.\u003c\/p\u003e\n\u003cp\u003eAs part of our crank-hub installation procedure, the engine sump and associated components are already removed.\u003c\/p\u003e\n\u003cp\u003eThis means the rod bearings can be replaced at the same time without repeating much of the strip-down and reassembly work required for a standalone rod-bearing job.\u003c\/p\u003e\n\u003cp\u003eHaving the rod bearings replaced during the crank-hub installation can save approximately \u003cstrong\u003esix hours of duplicated workshop labour\u003c\/strong\u003e compared with carrying out the two jobs independently.\u003c\/p\u003e\n\u003cp\u003eThis is why we can offer the complete ACL Race Series bearing replacement, new OEM BMW rod bolts and installation for \u003cstrong\u003e£500 additional when booked with the crank hub\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat About ARP Rod Bolts?\u003c\/h3\u003e\n\u003cp\u003eOur standard £500 package uses new OEM BMW connecting-rod bolts.\u003c\/p\u003e\n\u003cp\u003eFor higher-output, high-RPM or more severe-duty S55 builds, an upgraded ARP rod-bolt option is also available.\u003c\/p\u003e\n\u003cp\u003eThe appropriate fastener choice depends on the specification and intended use of the engine.\u003c\/p\u003e\n\u003cp\u003eAsk the Swift Performance team if you are planning a high-power build and would like to discuss the ARP rod-bolt upgrade.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis service is suitable for S55-powered BMW models including:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBMW F87\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eM2 Competition\u003c\/li\u003e\n\u003cli\u003eM2 CS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBMW F80\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eM3\u003c\/li\u003e\n\u003cli\u003eM3 Competition\u003c\/li\u003e\n\u003cli\u003eM3 CS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBMW F82 \/ F83\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eM4\u003c\/li\u003e\n\u003cli\u003eM4 Competition\u003c\/li\u003e\n\u003cli\u003eM4 CS\u003c\/li\u003e\n\u003cli\u003eM4 GTS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEngine:\u003c\/strong\u003e BMW S55 3.0 Twin Turbo\u003c\/p\u003e\n\u003cp\u003eThis service is not intended for N55, B58 or S58-engined vehicles.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eBooking Lead Time \u0026amp; How Long We Need Your Car\u003c\/h2\u003e\n\u003cp\u003eOur current booking lead time for S55 crank hub installations is approximately \u003cstrong\u003e5 weeks\u003c\/strong\u003e, although this can vary depending on workshop availability.\u003c\/p\u003e\n\u003cp\u003eWe require the vehicle for \u003cstrong\u003etwo working days\u003c\/strong\u003e to complete the crank hub installation correctly.\u003c\/p\u003e\n\u003cp\u003eThis allows us sufficient time to carry out the installation without rushing the procedure, reassemble the vehicle correctly and complete our post-installation checks and testing before the car is returned to you.\u003c\/p\u003e\n\u003cp\u003eOnce you purchase the package online, a member of the Swift Performance team will contact you to confirm the next suitable workshop date.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003ePurchase Online – Book Your Workshop Appointment\u003c\/h2\u003e\n\u003cp\u003ePurchase your S55 crank hub upgrade online for \u003cstrong\u003e£1,950 including VAT\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent booking lead time: approximately 5 weeks.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle required for: two working days.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOnce your order has been placed, a member of the Swift Performance team will contact you to arrange a suitable workshop booking date. Purchasing online does not automatically reserve a specific workshop date.\u003c\/p\u003e\n\u003cp\u003eInstallation takes place at:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSwift Performance\u003c\/strong\u003e\u003cbr\u003e\nStoke Mandeville\u003cbr\u003e\nAylesbury\u003cbr\u003e\nBuckinghamshire\u003cbr\u003e\nHP22 5GT\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e£1,950 including VAT – complete supply \u0026amp; fit package.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAfter purchase, we'll contact you to arrange your workshop booking.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eIs the S55 crank hub a known problem?\u003c\/h3\u003e\n\u003cp\u003eThe factory S55 crank hub arrangement is a well-known concern within the BMW performance community. If the hub moves relative to the crankshaft, the engine timing can move from its intended position. Not every S55 will experience this issue, but many owners choose to upgrade the arrangement preventatively.\u003c\/p\u003e\n\n\u003ch3\u003eDoes every S55 need a crank hub upgrade?\u003c\/h3\u003e\n\u003cp\u003eNo. It would be misleading to suggest every S55 will suffer crank hub slip. The upgrade is commonly considered by owners of tuned, high-performance, hard-driven or track-used cars, as well as owners who simply want to address the factory arrangement preventatively.\u003c\/p\u003e\n\n\u003ch3\u003eWhat happens if the crank hub slips?\u003c\/h3\u003e\n\u003cp\u003eA slipped crank hub can cause engine timing faults, drivetrain warnings, reduced-power mode or poor running. If the timing moves significantly, there is the potential for internal engine damage.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the 4-pin upgrade work?\u003c\/h3\u003e\n\u003cp\u003eThe upgraded hub is mechanically located to the crankshaft using four pins, providing a positive mechanical connection rather than relying solely on the factory friction-based arrangement.\u003c\/p\u003e\n\n\u003ch3\u003eDo you remove the sump when installing the crank hub?\u003c\/h3\u003e\n\u003cp\u003eYes. At Swift Performance we remove the sump as part of every S55 4-pin crank hub installation. Drilling the crankshaft creates metal swarf, so removing the sump gives us proper access to clean and inspect the area before reassembly. A replacement sump gasket, associated fixings, fresh engine oil and a new S55 oil filter are included in our package.\u003c\/p\u003e\n\n\u003ch3\u003eHow long does an S55 crank hub installation take?\u003c\/h3\u003e\n\u003cp\u003eWe require the vehicle for two working days. This gives us the time required to carry out the installation, reassemble the vehicle correctly and complete our post-installation checks and testing.\u003c\/p\u003e\n\n\u003ch3\u003eHow long is the wait for a crank hub booking?\u003c\/h3\u003e\n\u003cp\u003eOur current lead time is approximately five weeks. This can vary depending on workshop demand, and we will confirm the next suitable booking date with you after purchase.\u003c\/p\u003e\n\n\u003ch3\u003eIs there any other work worth doing at the same time?\u003c\/h3\u003e\n\u003cp\u003eThere can be. Because the crank hub installation involves substantial dismantling, some maintenance and performance upgrades require significantly less additional labour when completed at the same time. Options include rod bearings, camshaft alignment, spark plugs, sports cats, charge pipes, intakes and other S55 upgrades. Contact us if you would like advice for your particular car.\u003c\/p\u003e\n\n\u003ch3\u003eHow much does an S55 crank hub upgrade cost?\u003c\/h3\u003e\n\u003cp\u003eOur Insane Performance 4-pin BMW S55 crank hub upgrade is \u003cstrong\u003e£1,950 including VAT, supplied and fitted\u003c\/strong\u003e at Swift Performance.\u003c\/p\u003e\n\n\u003ch3\u003eIs the £1,950 price parts and labour?\u003c\/h3\u003e\n\u003cp\u003eYes. It is the complete supplied-and-fitted package including the crank hub, installation and associated parts and consumables listed on this page.\u003c\/p\u003e\n\n\u003ch3\u003eWhat crank hub does Swift Performance use?\u003c\/h3\u003e\n\u003cp\u003eWe use the \u003cstrong\u003eInsane Performance one-piece 4-pin crank hub\u003c\/strong\u003e for this package.\u003c\/p\u003e\n\n\u003ch3\u003eIs an oil change included?\u003c\/h3\u003e\n\u003cp\u003eYes. A new BMW S55 oil filter and suitable BMW LL-04 specification engine oil are included.\u003c\/p\u003e\n\n\u003ch3\u003eCan I upgrade the oil on a tuned car?\u003c\/h3\u003e\n\u003cp\u003eYes. Performance engine-oil upgrades are available for tuned, high-power and track-driven S55 vehicles.\u003c\/p\u003e\n\n\u003ch3\u003eWhich BMW models is this suitable for?\u003c\/h3\u003e\n\u003cp\u003eS55-powered BMW F87 M2 Competition and M2 CS, F80 M3 variants and F82\/F83 M4 variants.\u003c\/p\u003e\n\n\u003ch3\u003eWhat happens after I purchase?\u003c\/h3\u003e\n\u003cp\u003eSwift Performance will contact you after checkout to arrange a suitable workshop booking date.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the BMW S55 have rod-bearing problems?\u003c\/h3\u003e\n\u003cp\u003eThe S55 is not generally regarded as having the same widespread rod-bearing reputation as some earlier BMW M engines. However, rod bearings are highly loaded wear components and their condition can be influenced by mileage, lubrication, temperature, engine load and vehicle use.\u003c\/p\u003e\n\n\u003ch3\u003eWhat rod bearings does Swift Performance use?\u003c\/h3\u003e\n\u003cp\u003eOur standard S55 upgrade uses ACL Race Series 6B1584H\/STD conrod bearings with new OEM BMW connecting-rod bolts.\u003c\/p\u003e\n\n\u003ch3\u003eWhy are rod bearings only £500 when fitted with the crank hub?\u003c\/h3\u003e\n\u003cp\u003eOur crank-hub installation already requires removal of the sump and significant surrounding components. This means much of the labour required to access the rod bearings has already been completed. Carrying out both jobs together can avoid approximately six hours of duplicated workshop labour.\u003c\/p\u003e\n\n\u003ch3\u003eAre ARP rod bolts available?\u003c\/h3\u003e\n\u003cp\u003eYes. Our standard package uses new OEM BMW rod bolts. An upgraded ARP rod-bolt option is available for suitable higher-output, high-RPM or severe-duty builds. Contact Swift Performance to discuss your vehicle specification.\u003c\/p\u003e","brand":"Swift Performance","offers":[{"title":"Crankhub Only","offer_id":57369621496183,"sku":"SP-CHSTD-1","price":1950.0,"currency_code":"GBP","in_stock":true},{"title":"Crankhub + ACL Bearings + OEM Rod Bolts","offer_id":57369621528951,"sku":"SP-CHSTD-RB","price":2450.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/8489\/7720\/files\/4PINTOP_2048x_bdeac856-7856-4936-be96-a5615cdadb66.webp?v=1786369675"},{"product_id":"insane-performance-bmw-s55-4-pin-crank-hub","title":"Insane Performance BMW S55 4-Pin One-Piece Crank Hub","description":"\u003cp\u003e\u003cstrong\u003eInsane Performance one-piece 4-pin crank hub upgrade for the BMW S55 engine.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for S55-powered BMW M2 Competition, M3 and M4 models, the Insane Performance crank hub replaces the factory multi-piece crank hub arrangement with an upgraded one-piece design that can be mechanically located to the crankshaft using four pins.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e£799 including VAT – component kit only.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eProfessional Installation Available\u003c\/h2\u003e\n\u003cp\u003eLooking for the complete crank hub upgrade rather than the component on its own?\u003c\/p\u003e\n\u003cp\u003eSwift Performance offers the Insane Performance 4-pin crank hub \u003cstrong\u003esupplied and professionally installed for £1,950 including VAT\u003c\/strong\u003e at our workshop in Stoke Mandeville, Aylesbury.\u003c\/p\u003e\n\u003cp\u003eOur complete package includes the crank hub, professional installation, associated gaskets, seals and fixings, engine oil, S55 oil filter and our sump-removal installation procedure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"\/products\/bmw-s55-crank-hub-upgrade-insane-4-pin\"\u003eView our £1,950 S55 Crank Hub Supply \u0026amp; Fit Package\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eAbout the Insane Performance S55 4-Pin Crank Hub\u003c\/h2\u003e\n\u003cp\u003eThe Insane Performance S55 crank hub is a one-piece upgraded crank hub designed specifically for BMW's S55 engine.\u003c\/p\u003e\n\u003cp\u003eInsane Performance specifies the hub as manufactured from heat-treated steel and precision-machined using 5-axis CNC equipment.\u003c\/p\u003e\n\u003cp\u003eThis product is the \u003cstrong\u003e4-pin version\u003c\/strong\u003e, providing four mechanical locating points between the upgraded hub and crankshaft when correctly installed.\u003c\/p\u003e\n\u003cp\u003eThe pinned design creates a positive mechanical connection between the crankshaft and upgraded hub rather than relying solely on the factory friction-based arrangement.\u003c\/p\u003e\n\u003ch2\u003eWhy Upgrade the BMW S55 Crank Hub?\u003c\/h2\u003e\n\u003cp\u003eThe BMW S55 engine uses a factory crank hub and timing-drive arrangement that has become a well-known concern among BMW performance owners and specialists.\u003c\/p\u003e\n\u003cp\u003eIf the factory crank hub moves relative to the crankshaft, the engine timing can also move from its intended position. This is commonly referred to as a slipped or spun crank hub.\u003c\/p\u003e\n\u003cp\u003ePossible symptoms can include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrivetrain malfunction warnings\u003c\/li\u003e\n\u003cli\u003eEngine timing fault codes\u003c\/li\u003e\n\u003cli\u003eReduced-power or limp mode\u003c\/li\u003e\n\u003cli\u003ePoor engine running\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a more significant event, there is the potential for internal engine damage.\u003c\/p\u003e\n\u003cp\u003eNot every S55 engine will experience crank hub slip. However, many owners choose to upgrade the crank hub preventatively, particularly on tuned, high-performance or track-driven vehicles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot sure whether a crank hub upgrade is right for your car?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRead our \u003ca href=\"https:\/\/swiftperformance.co.uk\/blogs\/bmw-technical-guides\/bmw-s55-crank-hub-guide\"\u003eBMW S55 Crank Hub Guide\u003c\/a\u003e for a detailed explanation of the factory arrangement, common symptoms, tuned vs standard cars and pinned crank hub upgrades.\u003c\/p\u003e\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInsane Performance one-piece CNC-machined crank hub\u003c\/li\u003e\n\u003cli\u003eUprated crankshaft damper bolts\u003c\/li\u003e\n\u003cli\u003ePurpose-made drilling bit for the pinning procedure\u003c\/li\u003e\n\u003cli\u003ePrecision drilling fixture to locate the drill accurately\u003c\/li\u003e\n\u003cli\u003eGenuine\/OEM BMW crankshaft bolt\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProfessional Installation Recommended\u003c\/h2\u003e\n\u003cp\u003eInstallation of a pinned S55 crank hub requires specialist BMW timing equipment, accurate crankshaft positioning, precision drilling and correct engine reassembly.\u003c\/p\u003e\n\u003cp\u003eFor customers who do not want the component on its own, Swift Performance offers the complete installation for \u003cstrong\u003e£1,950 including VAT\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOur workshop procedure includes removal of the engine sump during drilling so the area can be properly cleaned and inspected before reassembly.\u003c\/p\u003e\n\u003ch2\u003eVehicle Compatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBMW F87:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eM2 Competition\u003c\/li\u003e\n\u003cli\u003eM2 CS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBMW F80:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eM3\u003c\/li\u003e\n\u003cli\u003eM3 Competition\u003c\/li\u003e\n\u003cli\u003eM3 CS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBMW F82\/F83:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eM4\u003c\/li\u003e\n\u003cli\u003eM4 Competition\u003c\/li\u003e\n\u003cli\u003eM4 CS\u003c\/li\u003e\n\u003cli\u003eM4 GTS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEngine:\u003c\/strong\u003e BMW S55 3.0 Twin Turbo\u003c\/p\u003e\n\u003cp\u003eThis product is intended for BMW S55 applications and is not suitable for N55, B58 or S58-engined vehicles.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eIs fitting included in the £799 price?\u003c\/h3\u003e\n\u003cp\u003eNo. £799 including VAT is for the standalone Insane Performance crank hub kit. Swift Performance also offers the same 4-pin crank hub supplied and professionally fitted for £1,950 including VAT.\u003c\/p\u003e\n\u003ch3\u003eHow much is professional installation?\u003c\/h3\u003e\n\u003cp\u003eOur complete BMW S55 crank hub package is £1,950 including VAT, supplied and fitted at Swift Performance in Aylesbury.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between the £799 part and the £1,950 package?\u003c\/h3\u003e\n\u003cp\u003eThe £799 product is the standalone crank hub kit. The £1,950 package includes the Insane Performance 4-pin crank hub, professional installation, associated replacement gaskets, seals and fixings, engine oil, S55 oil filter and workshop consumables.\u003c\/p\u003e\n\u003ch3\u003eWhich BMW models is this suitable for?\u003c\/h3\u003e\n\u003cp\u003eS55-powered BMW F87 M2 Competition and M2 CS, F80 M3 variants and F82\/F83 M4 variants.\u003c\/p\u003e\n\u003ch3\u003eCan Swift Performance install it?\u003c\/h3\u003e\n\u003cp\u003eYes. Swift Performance offers a complete S55 4-pin crank hub installation service at our workshop in Stoke Mandeville, Aylesbury.\u003c\/p\u003e","brand":"Insane Performance","offers":[{"title":"Default Title","offer_id":57369313411447,"sku":null,"price":799.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/8489\/7720\/files\/4PINTOP_2048x_bdeac856-7856-4936-be96-a5615cdadb66.webp?v=1786369675"}],"url":"https:\/\/swiftperformance.co.uk\/collections\/insane-performance.oembed","provider":"Swift Performance","version":"1.0","type":"link"}