Product Description OEM-style standard bore kits include a cast aluminum Cylinder Works cylinder, Vertex Piston and gaskets needed to restore horsepower and performance, as a competitive price point, compared to OEM options.
Cylinder Works 05-21 Yamaha YZ 125 125cc Standard Bore Cylinder Kit - CW20011K01 MSRP: $615.95 Was: Now: $460.43 Add to Cart
Cylinder Works 05-21 Yamaha YZ 125 125cc Standard Bore Cylinder Head - CH2005-K01 MSRP: $134.95 Was: Now: $100.88 Add to Cart
Athena 05-21 Yamaha YZ 125 LC Factory 125cc 54mm Standard Bore Cylinder Gasket Kit - P400485160010 MSRP: $51.95 Was: Now: $41.43 Add to Cart