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143cc Big Bore Kit with Camshaft - TTR110 143cc Replacement Piston Kit - TTR110 197cc Big Bore Kit - KLX140 220cc Complete Ultimate Big Bore Kit - KLX140 CNC Ported Race Head w/Big Valves - KLX140 Hi Performance Big Bore Kit - KLX140 High Performance Valve Springs - TTR110 KLX140 HD Clutch Springs Performance Cam / Roller Rockers - KLX140 Performance Camshaft - TTR110 Race Head with Big Valves - TTR110 TTR110 Custom Primary Gear for Manual Clutch TTR110 Racing CDI Rev Box Yamaha HD Clutch Spring Kit - TTR110 Yamaha TTR110 Manual Clutch Kit KLX140 Big Valve Race Head Kit & 170cc Big Bore Kit Coming soonKLX140 Big Valve Race Head Kit & 170cc Big Bore Kit$585.00$585.00$585.00Unit price / per