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Engine failures caused by the standard three-piece crank hub on the S55 and N55 engine are (unfortunately) well known, but these are fully addressed with the installation of the MMR Performance 4-pinned single-piece crank hub. Together with the option of adding our Capture Plate for ultimate security. The OE crank hub unit s friction plate…
It’s well documented that the N55 engine found in the M135i, M235i, 335i and 435i is prone to severe oil starvation issues when pushed hard on the road and even more so when used on track. If you re ever planning to use your car on track, or even particularly hard road driving, this is…
The N55 and S55 crank bolt is susceptible to loosening due to the engine s natural vibrations and harmonics, meaning that with just the slightest loss of torque, your timing will slip out of correct adjustment. With potentially disastrous consequences. The MMR Performance capture plate completely surrounds and secures the head of the OE crank…
Issues relating to the OE three-piece crank hub found in the S55 and N55 engine are unfortunately widely known. Thankfully, these issues are addressed with the MMR Performance one-piece billet crank hub. Additionally, pairing the single piece crank hub with the optional MMR capture plate ensures complete peace of mind. A capture plate removes the…
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