Burgtec Shimano Crank Bolt - Black

Yes, it is designed as a direct, more durable replacement for the standard plastic tension cap found on Hollowtech II cranksets.

This bolt is specifically intended for Shimano Hollowtech II systems; please check your crankset manual to confirm it utilizes the standard M20 tension bolt interface.

The bolt is designed solely for pre-tensioning the crank assembly. The actual load-bearing is handled by the crank arm pinch bolts; over-tightening the tension bolt serves no mechanical benefit and risks stripping the threads.

While highly recommended to ensure you stay within the 0.7 to 1.5Nm range, if you do not have one, tighten until snug and then perform a very slight turn. Do not apply force.

Yes, it is fully compatible with Shimano e-bike motors utilizing the Hollowtech II style crank interface.

Back the bolt out and ensure it is aligned perfectly straight. Check the crank spindle threads for debris or old thread locker residue.

Verify the torque setting. Ensure you are within the 0.7 to 1.5Nm range, as the bolt relies on proper pre-tensioning to stay seated.

Ensure your 8mm hex key is not worn. Use a high-quality, non-rounded hex tool to prevent damage to the bolt interface.