TB

TBW09030

TB GPX/YX150 170cc Bore Kit, Race Head V2 w/ 28mm Carb Kit

Rebuild Kits

Highest quality materials.
Precision fit.
Exacting tolerances.

170cc Race Head V2, Big Bore Kit, and 28mm Carburetor Performance Kit: - Race Head V2 - Roller rockers, 30mm intake valve, 24.5mm exhaust valve, 27mm intake port, 23mm exhaust port (valves installed). - Race Camshaft for Race Head V2 - All aluminum ceramic plated 64mm cylinder skirtless - Lightweight high compression 64mm piston with rings, pin, & clips - Head gasket kit - includes the cylinder head o-ring set and an exhaust gasket. - 28mm Performance Carb (125 main/50 pilot) - Race Head V2 Intake Kit (to match larger intake port on V2 head) - Jet kit for varying conditions and exhausts - Throttle Cable - Foam Air Filter This is our latest complete kit to turn your YX/GPX160 engine into an absolute beast! This kit includes our new Race Head V2 and while the new head may appear to be the same on the outside as our other KLX110 type race head, internally it has gone through numerous changes. The addition of roller rocker arms and a new camshaft are the biggest changes followed by bigger valves and ports. The exhaust valve is now stainless as well (21-4N material). This all adds up to a cylinder head that puts out a professional level of performance yet is still affordable for the privateer rider. The kit also includes an all aluminum ceramic plated 64mm cylinder (with short skirt). This cylinder is lighter than a steel sleeved aluminum cylinder, reduces friction (increasing power), improves sealing, and provides better heat transfer (runs and cools down quicker). We top off the roller head with a 28mm performance carb kit that is easy to tune and works much better with this setup than your stock 26mm carb. Additionally, our head gasket kit also includes a head o-ring set and exhaust gasket so you don't have to re-use your old ones or make a trip to your local dealer to get new ones and spend more money. The new top end consists of high quality parts and requires no machining to the cases - bolt on and go! This kit is only for the YX/GPX160 and no

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