For Yamaha TZR50. for Aprilia RS50 1999-2005 (AM6 engine). for Yamaha DT50 (AM6). Bore Size: 47mm. Type: Cylinder Piston Kit. 1 Cylinder Piston Kit. It focuses on researching and developing various performance products, such as, high-performance racing car’s connecting rod, crankshaft, piston, suspension and air spring.
