Issues relating to the standard three-piece crank hub on the S55 engine are widely known, but these are fully addressed with the installation of the MMX Performance one-piece billet crank hub and capture plate.
The OE units friction plate are known to slip, causing the timing to alter enough that piston-to-valve contact can occur and, if not totally standard and within the warranty period, leaves owners with a very expensive repair bill!
We know of this problem only too well, having experienced this issue twice ourselves, so we were committed to developing a product that would ensure owners of standard power outputs have complete peace of mind, as much as those that wish to increase the power and torque output without having to worry; MMX have engineered the most comprehensive solution on the market and at one of the most compelling price points.
The MMX Performance one-piece crank hub is machined from billet EN36 that’s been heat-treated with a 0.75mm case hardening, making it incredibly strong and durable.
The one-piece design ensures the friction plates can’t slip and with a new crank bolt tightened appropriately, this alone delivers a substantial improvement in reliability versus the OE version.
For the ultimate solution, which then also removes the possibility for this bolt to be able to loosen, we’ve engineered an additional billet aluminium capture plate that securely houses the whole head of the crank bolt, making it impossible for it to come undone.
Careful design has also allowed us to develop a solution that’s easy to install compared to some other products as there’s no drilling or modification required to the OE crankshaft, which saves you time and ultimately money, too.
This kit includes the Crank Hub Capture Plate.
Issues relating to the standard three-piece crank hub on the S55 engine are widely known, but include the need to ensure the OE crank bolt can’t loosen, which is one cause of the crank hub friction plates starting to slip.
Machined from T-6061 billet aluminium before being anodised in our trademark finish, the MMR Performance capture plate secures the head of the OE crank bolt and prevents it from turning or being able to 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.
