Double ended cylinder head bolt for building a new cylinder or replacing an old head bolt. Also known as M6X112 Double Ended Bolt.

This bolt attaches the Cylinder Head (cover) to the Cylinder Body (case).

Size:

The 6mm size works with 48cc motor builds and older 66cc Black Stallion and Jet motors.
The 8mm size is for 66cc SkyHawk bike motors and older raw engines.

* Orders received Monday - Friday by 3:00PM EST are eligible for
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Our gasoline operated products are NOT compliant with Environmental Protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.

If you need help with installation or troubleshooting, kindly use our Builder Locator to find builders near you. Builders are experts with motorized bicycles.