- After market clone 22cc casting.
- Stainless Valves: 28.5mm intake, 25mm exhaust
- 37lb springs with billet retainers
- fully ported and polished
- milled .065" resulting in a 14cc combustion chamber
- lash caps and spark plug clearance washer included
- pair with a decked piston and our .045" head gasket for a compression ratio of 12.5 to 1