SSR Performance Keyed 4 Pin Crank Hub - M3 / M4 / M2C S55 - 4 Pin Crank Hub
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SSR Performance Keyed 4 Pin Crank Hub - M3 / M4 / M2C S55 - 4 Pin Crank Hub

$949.00
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ATTENTION: Although Maximum PSI has discontinued the private labeling of this product, we still offer an updated style of this kit direct from the facility that designed and still currently manufactures it. It can no longer be purchased from Maximum PSI, however we still offer an updated keyed style solution and will perform exactly the same. Maximum PSI and SSR Performance assume no liability on the use of this product. Product is for off-road / racing use only. WHAT IS A “KEYED CRANK HUB UPGRADE” AND WHY DO I NEED IT?There are thousands of reported cases on the internet of "spun crank hubs" on stock and modified cars with the S55 engine. The keyed crank hub upgrade is a replacement of your stock crank hub unit with a unit that has four “keys” or “pins” for which 4 holes are drilled into the S55 crankshaft so that upon installation of the crankshaft bolt the new keyed crank hub can be locked into place permanently without a chance of relative rotation to the crankshaft. This allows fu

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