MMR20-1001

MMR Single piece crank hub for BMW N55 & S55

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.

Our one-piece design ensures the friction plates can no longer slip.

The OE crank hub unit's friction material is well 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 have developed this single-piece Crank Hub together with our optional capture plate to ensure owners have complete peace of mind, whether on an untuned factory car or equally for those that wish to increase the power and torque output without ever having to worry again. MMR Performance have engineered the most comprehensive solution on the market and at one of the most compelling price points.

Our crank hub is machined from billet EN36 steel 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 no longer slip and with a new crank bolt (supplied with the crank hub) tightened appropriately, this alone delivers the transformational improvement in reliability versus the OE version.

MMR Single piece crank hub for BMW N55 & S55
MMR Single piece crank hub for BMW N55 & S55
MMR Single piece crank hub for BMW N55 & S55
MMR Single piece crank hub for BMW N55 & S55
MMR Single piece crank hub for BMW N55 & S55
MMR Single piece crank hub for BMW N55 & S55
SKU: MMR20-1003FK

MMR Single piece crank hub for BMW N55 & S55

Sale price£468.47

Tax excluded. Shipping calculated at checkout

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 possibility for the crank bolt to loosen with the engine's vibrations or harmonics.

Configuration: Without MMR capture plate
In stock
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Product fitment.

While every effort has been made to ensure the accuracy of this information, we are not liable for abnormalities or inaccurate data. Customers are wholly responsible for checking fitment for their vehicle.

Series

1-Series, 2-Series, 3-Series & 4-Series

Chassis code

F2x, F3x, F80, F82 & F87

Model year

2011 - 2021

Machined from heat-treated billet EN36 steel

Single-piece design

Where to purchase

Over 100 dealers, globally.

Our network of expert MMX Performance dealers can supply our full range, together with product guidance and advice, plus often an experience fitting service.

If you haven't got a MMX Performance dealer close to you, don't worry! Remember you can buy direct from our MMX Performance webshop.

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About MMX

A decade worth of obsession.

MMX Performance products have been designed and developed in the UK with passion by enthusiasts, for enthusiasts. All of our products are created in the world's toughest development lab: motorsport. We push the limits and reach new heights on track; then refine our products to give you the performance you need when you want it on the road.

Our extensive range of BMW and MINI upgrades offer unrivalled quality, performance and reliability worldwide; furthermore, every product carrying the MMX logo is thoroughly durability tested both on the road and track, so you can have complete peace of mind that you're installing only the best quality products to unlock the true performance potential from your car.