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BMW Technical Guides

BMW TECHNICAL GUIDES

Technical advice, workshop knowledge and in-depth guides for BMW M and performance models. From common engine concerns and preventative maintenance to performance upgrades, our guides explain the technical side of the work we carry out at Swift Performance.

BMW S55 Crank Hub Guide: Failure, Symptoms & 4-Pin Upgrades

A complete guide to the BMW S55 crank hub, including symptoms, tuned vs stock cars, pinned 4-pin upgrades and professional installation.

BMW S55 Rod Bearing Guide: Wear, Oil & ACL Upgrades

A technical guide to BMW S55 rod-bearing wear, lubrication, ACL Race Series bearings and why replacement alongside a crank-hub upgrade saves labour.