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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29
included is a piston with bigger reliefs to match the larger valves of the new race head
5mm Valve Stem
Zongchen ZS
on your stock engine size
See the Performance Info section for additional information on our performance parts
Trail Bikes Race Head V2 Upgrade Kit for YX and GPX 150/160cc Motors Tiedowns included is a piston with150 160cc YX GPX Race Head V2 Upgrade Kit: Race Head V2 Roller rockers, 30mm intake valve, 24. 5mm exhaust valve, 27mm intake port, 23mm exhaust port (valves installed). Race Camshaft V2 2 for Race Head V2 Lightweight high compression domed 60mm piston with rings, pin, & clips Head gasket kit includes the cylinder head o ring set and an exhaust gasket. This kit is to upgrade the cylinder head on stock YX GPX 150 or 160 engines to our new Race Head V2.
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