MODE x RK Autowerks x EEP Double-Keyed 4-Pin Crank Hub Bundle for BMW M3 F80 M4 F82 F83 & M2 Competition F87 S55

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Assembled by MODE™️ Part No. EEP-RK-CHB-S55

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NOTE: Drilling holes into the crankshaft using the supplied specialty drill bit is required to mate the locking pins with the crankshaft.

What is a Double-Keyed Crank Hub?

Failed or spun crank hubs have been reported throughout the S55 community, which has lead to valid concerns of the integrity of the factory hub, bolt and sprocket assembly. If a crank hub fails or spins it will cause the engine valve timing to skip or jump, potentially causing engine damage or failure.

RK Autowerks new 4-Pin double-keyed, two-piece crank hub has fast become known as the reliable alternative to the factory design.

Double-Keyed Locking Assembly design locks the valve timing chain sprocket and the oil pump chain sprocket together to prevent one from spinning independent of the other. The oil pump sprocket is also pinned to the crankshaft nose. This Double-Keyed design ensures the sprockets will not rotate out of position.

 

Two-Piece Design. The original crank hub assembly is made up of three pieces; the hub, the engine timing sprocket, the oil pump sprocket and the crankshaft bolt. The RK Autowerks design combines the hub and timing sprocket into one machined piece. This ensures that as long as the bolt is properly tightened to the crank the timing sprocket is always in sync with the crank. This acts as added insurance to the double-keyed design mentioned above.

Why do I need it?

If your BMW M3 F80, M4 F82, F83 or M2 Competition F87 S55 is modified or heavily modified installing the RK Autowerks Crank Hub is highly recommended. A spun crank can lead to engine failure with repair costs in excess of $20,000 or if slightly luckier broken down until vehicle is sent back to dealer or workshop for the crank hub to be replaced anyway and the engine retimed.

The SCH (Spun Crank Hub) failure has been seen on both stock and modified S55 engines. If you are modifying your car, doing track work or driving hard then upgrading the crank hub in your S55 powered M car is a fail safe you will not regret.

100% Bulletproof.

As it stands there is a 100% success rate of the MODE x RK Autowerks x EEP Double-Keyed 4-Pin Crank Hub.

 MODE x RK Autowerks Crank Hub Bundle Includes:

  • RK Autowerks Two-Piece Keyed 4 Pin Design Crank Hub (S55.001.CH)

  • EEP - Elite Euro Performance Crank Bolt Capture (Part No. EEP-CHBCK-S55)

  • Genuine BMW Parts OEM Crank Bolt (Part no. BM-11217614270)

  • Genuine BMW Parts OEM Valve Cover Gasket (Part no. BM-11127587804)

  • Genuine BMW Parts OEM Cam Bolts (2) (Part no. BM-11367524954)

  • Genuine BMW Parts OEM Engine Inspection Plug (2) (Part no. BM-11117849396)

  • Genuine BMW Parts OEM Front Main Seal (Part no. BM-11118618864)

  • Genuine BMW Parts OEM Brake Booster Vaccum Pump Seal Cap (Part no. BM-11117530262)

  • Genuine BMW Parts OEM Oil Pump Chain Tensioner Access Cap (Part no. BM-11117615131)

  • Genuine BMW Parts OEM Sump Gasket (Part no. BM-11137600482)

  • Genuine BMW Parts OEM Sump Bolts (Part no. BM-11132210959)

  • MAHLE or MANN Filter Oil Filter

  • Specialty Drill Bit

  • Drill Fixture Tool

  • Drill Fixture Bolt

Installation:

Installation of any crank hub solution is extensive and must be carried out by highly qualified technicians only, the oil pan, valve covers, subframe, steering and suspension must be removed and re-installed. BMW-Specific specialty tools are required in order to set the engine cam and valve timing. Drilling holes into the crankshaft using the supplied specialty drill bit is required to mate the locking pins with the crankshaft.

WARNING: Improper installation may cause irreversible engine damage.

Please Click Here to locate a dealer in your area.

Installation Tips:

  1. This is a great time to upgrade your turbos as everything is out of the way, Click here to browse our range of upgraded Pure Turbos.
  2. For high output or high km builds it is also a great time to replace the rod bearings, everything is out of the way and ready to go for a very quick and easy installation.
  3. Many components, bolts and hardware are single-use only, please ensure no bolts are re-used during this installation that should not be.
  4. The oil system must be primed prior to re-starting the engine due to the crankcase being opened up and pressure being released.

Applications:

  • BMW M3 F80 (2014-2018)

  • BMW M3 F80 Competition (2016-2018)

  • BMW M4 F82/F83 (2014-2020)

  • BMW M4 F82/F83 Competition (2016-2020)

  • BMW M4 GTS (2016)
  • BMW M2 CS (2020)

  • BMW M2 Competition F87 (2018-2020)

    Recommended Specialty Items:

    • Crankshaft Alignment S55 Timing Tool Kit

    Supplemental Kit Instructions (To use as a guideline)

    Despite updated design, the general install procedure remains unchanged other than drilling for pins.

       

      ATTENTION: MODE Auto Concepts, Elite Euro Performance and RK Autowerks assume no liability on the use or improper installation of this product. Product is for off-road / racing use only.

       

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      MODE™ Strives to push the boundaries in automotive modification, styling and tuning by creating individualised vehicles that are truly one of a kind. These days cars have become a staple in our everyday lives. No matter what we drive, there is usually some or even many more of the exact same car out there. What we drive has become more and more a reflection of ourselves and our individuality. Seeing this we created a new concept in automotive modification in Australia.Each purchase made online can be delivered directly to your door or to one of our authorised MODE™ dealers for fitting & installation service plus in store advice, software tuning, coding and personalisation to your vehicle.MODE™ is the master distributor to some of the World’s largest and most exclusive automotive brands with an extensive dealer network to ensure that no matter where you are we can deliver that signature MODE™ experience, an experience you will never forget.

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