Race Head V2 Upgrade Kit - GPX/YX150/160 Import Chinese KLX110 - TBW9034 tbw0931 - Uses a 350lb/inch spring

- Uses a 350lb/inch spring coil

Race Head V2 – Aluminum roller rockers

- Top end gasket kit

YX160 Piston for 184cc kit

Race Head V2 Upgrade Kit - GPX/YX150/160 Import Chinese KLX110 - TBW9034 tbw0931 - Uses a 350lb/inch springTB Parts Performance 170cc 184cc Race Head V2 Upgrade Kit GPX YX150 160 Part Number: TBW9034 Description: 170 184cc 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 64mm head gasket kit includes the cylinder head o ring set and an exhaust gasket. This kit is for YX GPX150 160 engines with our 170cc or 184cc bore