YAMAHA YZ125D 77 Crankshaft - Piston Yz125a - B - C - D
YAMAHA YZ125E 78 Crankshaft - Piston Yz125e - F
YAMAHA YZ125E 78 Crankshaft - Piston Yz125g
YAMAHA YZ125F 79 Crankshaft - Piston Yz125e - F
YAMAHA YZ125F 79 Crankshaft - Piston Yz125g
YAMAHA YZ125G 80 Crankshaft - Piston Yz125e - F
Parts number :1371163300 Interchangeable OEM parts:137-11633-10