PRODUCTS
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INFORMATION
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This product is for a CRF50, CRF70
Trial Bikes Race head for 88cc (52mm) Bore Kits
- NEW Race Head – Larger valves (now 25/22mm) and better flow for increased performance. Also has bigger cooling fins. Includes all necessary parts and comes assembled!
- 52mm piston with rings, pin, & clips.
- High performance race camshaft (for the Race Head only)
- Head gasket kit.
- Intake kit for the race head - will match the race had much much better than intakes intended for the stock head.
Our Race Head has been updated for even more performance! It now has 25/22mm valves with better porting/flow. We also kept the combustion chamber the same size and changed the angle of the valves slightly. This kit is for upgrading 88cc bore kits with a stock head to the Race head. You should have your existing cylinder honed (unless its new) prior to installing this kit.
We recommend purchasing a high volume oil pump kit.
Installation Note: It will save a lot of time and effort if the oil pump is installed while installing the bore kit (requires cylinder removal).
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