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MMX Performance One-Piece High HP Crank Hub Upgrade Kit 4-Pin With Capture Plate BMW S55/N55 E | F-Chasis 2004-2021 - MMR20-1004FK
Recommended for high-powered cars over 700HP.

Engine failures caused by the standard three-piece crank hub on the S55 and N55 engine are (unfortunately) well known, but these are fully addressed with the installation of the MMR Performance 4-pinned single-piece crank hub. Together with the option of adding our Capture Plate for ultimate security.

The centrepiece of the MMR kit is the UK made CNC-machined one-piece crank hub, created from billet EN36 steel that's heat-treated with a 0.75mm case hardening, making it incredibly strong and durable. Included are four aerospace precision machined dowels that mechanically lock the hub to end of the crank itself, plus a brand new OE bolt.

Installation of these dowels is certainly not a DIY job. But, to make the job easier for the professionals, ensuring that the required crank modifications are made safely and accurately, the MMR kit also includes a full installation jig that includes a bolt-on drilling guide, a location bolt for this guide, plus an HSS rolled high-speed drill bit.

Together, the single-piece design combined with the four-pin location ensures that there is simply no way that the friction plates can ever slip. With the new OE crank bolt tightened appropriately, this delivers a transformational improvement in reliability and peace of mind versus the OE version.

Fitment really is an absolutely essential insurance policy for any hard-driven N55 F-series car.



Fitment:
  • BMW 2 Series F22/F23 2014-2021
  • BMW 3 Series E90/E91 2005-2013
  • BMW 3 Series E92/E93 2011-2014
  • BMW 3 Series F30/F31 2012-2018
  • BMW 3 Series Gran Turismo F34 2013-2015
  • BMW 4 Series F32/F33 2013-2019
  • BMW 4 Series Gran Coupe F36 2016-2019
  • BMW 5 Series E60/E61 2004-2010
  • BMW 5 Series F10/F11 2011-2017
  • BMW 5 Series Gran Turismo F07
  • BMW 6 Series E63/E64 2004-2010
  • BMW 6 Series F12/F13 2011-2018
  • BMW 6 Series Gran Coupe F06
  • BMW M2 F87 2015-2018
  • BMW M2 Competition F87 2015-2018
  • BMW M2 CS F87 2015-2018
  • BMW M3 F80 2015-2020
  • BMW M3 CS F80 2015-2020
  • BMW M4 F82/F83 2015-2020
  • BMW M4 CS F82 2015-2020
  • BMW M4 GTS F82 2015-2020
  • BMW X3 F25 2011-2017
  • BMW X4 F26 2013-2018
  • BMW X5 E70 2007-2013
  • BMW X5 F15 2014-2018
  • BMW X6 E71 2007-2014
  • BMW X6 F16 2015-2018
Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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Wholesale price $878.86
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Product Added At Thursday 13 March, 2025
Product Modified At Tuesday 01 April, 2025
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Last Edited By kathi@vividracing.com
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