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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
race-proven durability
Surface Rejuvenation: The block surface is meticulously refinished to the pinnacle of precision
Unmatched Performance for BMW S52 Builds
C | BMW B58 Gen1
Kies Motorsports Crank Bolt Lock, BMW N54/N55/S55 M40iX race-proven durabilityThe Kies Motorsports Crank Bolt Lock acts to "lock" the crank bolt on the S55, N55, and N54 in an effort to prevent the crank bolt from backing out, which can lead to catastrophic engine failure. By locking the bolt into place, you virtually eliminate the possibility of the crank bolt working its way loose. Please note, by adding the Kies Crank Bolt Lock, it is still possible to spin a crank hub, however, it lessens the risk of the hub spinning
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