
- Stock: 1
- Model: MMR20-1001
- Brand:

- EC Approved: NO
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The MMR Performance one-piece crank hub permanently eliminates the risk of crank hub slip found on OEM multi-piece designs used on BMW S55 / N55 engines. Machined from billet EN36 steel and case-hardened for extreme durability, it replaces the factory unit with a solid one-piece design that prevents any friction plate movement. When installed with the supplied new crank bolt—and optionally paired with the MMR capture plate—it delivers a major reliability upgrade for both stock and high-power applications.
One-piece billet crank hub design
Eliminates OEM friction plate slip
Billet EN36 steel construction
0.75 mm case-hardened for maximum strength
New OEM crank bolt included
Designed for S55 / N55 engines
Compatible with optional MMR capture plate
Suitable for stock and tuned engines
Professional installation recommended
Made in the UK
2026 - This material is exclusively copyrighted and reserved

| Manufacturer | Model | Type | Version |
|---|---|---|---|
| BMW | 1 Series | E8x - 08-13 | 135i - 306 |
| BMW | 1 Series | E8x - 08-13 | 1M - 340 |
| BMW | 1 Series | F2x - 11-20 | 135i - 320 / 326 |
| BMW | 2 Series | Fxx -13-20 | 235i - 326 |
| BMW | 2 Series | Fxx -13-20 | M2 - 370 |
| BMW | 2 Series | Fxx -13-20 | M2C - 410 / 450 |
| BMW | 3 Series | E46 - 01-06 | M3 - 343 / 360 |
| BMW | 3 Series | Fxx - 13-19 | 335i -306 |
| BMW | 3 Series | Fxx - 13-19 | M3 - 431 / 450 / 460 |
| BMW | 4 Series | Fxx - 13-19 | 435i - 306 |
| BMW | 4 Series | Fxx - 13-19 | M4 - 431 / 450 / 460 |














