MMX Crank hub capture plate MMR20-1002 for BMW S55 / N55 - MMR20-1002 - MMX Crank hub capture plate for BMW N55 & S55 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 MMX crank hub capture plate comes in. Prevent N55 or S55 crank hub bolt failure. Machined from T-6061 billet aluminium before being anodised in our trademark finish, the MMX 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 MMX 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. Product features Single-piece design. Machined from T-6061 billet aluminium before being anodised in our trademark gloss black finish. Completely surrounds and secures the head of the OE crank bolt. Available to purchase with MMX single-piece crank hub. Complete kit with everything you need. Fitting information BMW S55 and N55 bolt torque: 100Nm initial torque plus 270 degrees. Additional information This MMX capture plate is a great starting point to avoid the dreaded hub-slip problems for standard cars, and those not used in track conditions. However, for complete peace of mind, and certainly when it comes to highly modified or hard-driven cars, we strongly recommend selecting the one piece crank hub plus capture plate as the only way to be 100% certain to avoid future costly failures.