2.5mm & 3.0mm Key Set

The Woodruff key or Semicircular bond is used on 2 stroke engines to attach gears to shafts.

Includes both sizes: 2.5mm and 3.0mm

* Orders received Monday - Friday by 12:00nn PT are eligible for
Same Day Shipping! Except for USPS which ships the next business day.

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.