***NEW**Race head for TRX90 or Chinese 86-107cc

- 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!

- 52.4mm or 54mm 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.

6/26/06 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 (available in this section).

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).

See the Performance Info section for additional information on our performance parts.

Available Options:

Piston Choice:
54mm HC52.4mm HC