MMX Performance BMW S55 / N55 Crank Hub Capture Plate

Issues relating to the standard three-piece crank hub on the S55 and N55 engine are widely known, and include the need to ensure the OE crank bolt cannot loosen. That's where the MMR crank hub capture plate comes in.

Machined from T-6061 billet aluminum before being anodized in our trademark finish, the MMR Performance capture plate completely surrounds and secures the head of the OE crank bolt, making it physically impossible for it to turn or loosen.

Secured to either the MMR one-piece crank hub, or the OE crank hub, the elongated slots ensure a perfect, secure installation, every time.

Installation of the capture plate is also possible with the engine remaining in-situ, with just the need to drop the radiator, in order to gain adequate access to install.

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 bolt, making it physically impossible for it to turn or loosen. Secured to either the MMR one-piece crank hub, or the OE crank hub, the elongated slots ensure a perfect, secure installation, every time.

NOTE: Capture plates are now anodized in a GLOSS BLACK. Crank hub pictured is not included; for illustration purposes only.

READ ABOUT CRANK HUB FAILURES HERE