This cylinder head offers many upgrades over stock that allow your engine to make more HP everywhere and turn even more RPMs.

• Larger intake and exhaust ports
• Larger 25/22mm stainless (21-4n) valves (preinstalled)
• Better valvetrain geometry and HD valve springs (preinstalled)
• Bigger Cooling Fins
• Manufactured to our specs for a value that cannot be beat!

Fits all 69-Current 50cc & 70cc Honda OHC singles, but does require a matching Race Head piston (Will not work with stock pistons or bore)