146cc Big Bore Piston & Mikuni VM26 Kit - 14mm Piston Pin Engines - TBW9070 valves light weight high revving piston

light weight high revving piston and a head gasket kit

While the 143 bore kit provides a nice power gain over stock

International shipments normally go out Tuesday/Friday

Feels like you're giving the bike throttle and it's not going anywhere

146cc Big Bore Piston & Mikuni VM26 Kit - 14mm Piston Pin Engines - TBW9070 valves light weight high revving piston146cc Big Bore Piston & Mikuni VM26 Kit 14mm Piston Pin Engines Part Number: TBW9070 141cc (57mm) Bore Kit and Mikuni VM26 Carb Kit for Chinese 120cc Engines with Big Valve Cylinder Heads (27 23mm or 30 23mm): Aluminum cylinder with steel sleeve High compression large dome 57mm piston with rings, 14mm pin, & clips Head gasket kit Genuine Mikuni VM26mm 606 Series Performance Carb (Not a cheap Chinese copy) Intake Kit Jet kit with 3 different sizes