YAMAHA AT1/CT1 Piston NEW OEM (248-11637-71)

69 70 71 YAMAHA CT1 AT1 PISTON .75 OVER OEM NOS 251-11637-00

NOS Yamaha 3RD O/S Piston 69 AT1 70-71 CT1 248-11637-71

NOS MC Brand 56.75mm 3rd O/S 0.75mm Piston Fits: Yamaha AT1 AT-1 248-11637-01

NOS MC Brand Complete Gasket Set For Yamaha AT-1/AT-1E

NOS MC Brand Gasket Set Kit Fits: Yamaha AT-1 AT1 AT1-E AT-1E Made in Japan

NEW YAMAHA OEM NOS PISTON RINGS / 251-11601-30 .75 OVER / CT1 ATM1 AT1 Y1600

NEW YAMAHA OEM NOS PISTON RINGS / 248-11601-30 .75 OVER / AT1B ATLC