50cc - 100cc (QMB139)

72cc / 80cc (47mm BORE) CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS

72cc / 80cc CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 47mm CYLINDER BORE* CYLINDER HEAD * 47mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST PORT DIAMETER: 18mm  *...

72cc / 80cc (47mm BORE) EGR STYLE CYLINDER HEAD *69mm VALVES* FOR QMB139 MOTORS

72cc / 80cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 47mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 47mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST...

72cc / 80cc (47mm BORE) EGR STYLE CYLINDER HEAD *64mm VALVES* FOR QMB139 MOTORS

72cc / 80cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 47mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 47mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 18mm * EXHAUST...

60cc (44mm BORE) CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS

60cc CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 44mm CYLINDER BORE* CYLINDER HEAD * 44mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT DIAMETER: 18mm  *...

60cc (44mm BORE) CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS

60cc CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 44mm CYLINDER BORE* CYLINDER HEAD * 44mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT DIAMETER: 18mm  *...

60cc (44mm BORE) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS

60cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 44mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 44mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT...

60cc (44mm BORE) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS

60cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 44mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 44mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.60mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT...

50cc (39mm BORE) CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS

50cc NON-EGR CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* NON-EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT DIAMETER:...

50cc (39mm BORE) CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS

50cc NON-EGR CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* NON-EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT DIAMETER:...

50cc (39mm) EGR STYLE CYLINDER HEAD WITH *69mm VALVES* FOR QMB139 MOTORS

50cc EGR STYLE CYLINDER HEAD WITH 69mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 69mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT...

50cc (39mm) EGR STYLE CYLINDER HEAD WITH *64mm VALVES* FOR QMB139 MOTORS

50cc EGR STYLE CYLINDER HEAD WITH 64mm VALVES INSTALLED FOR MOTORS WITH 39mm CYLINDER BORE* EGR STYLE CYLINDER HEAD * 39mm BORE * VALVE LENGTH: 64mm * OVERALL HEIGHT: 59.5mm * INTAKE PORT DIAMETER: 17mm * EXHAUST PORT...

TAIDA 52mm (88cc) QMB139 CYLINDER SET (54mm SPACING) WITH CAST PISTON

TAIDA HIGH PERFORMANCE  88cc (52mm) CYLINDER SET FOR 54mm SPACING   INCLUDES   CYLINDER JUG (52mm) 54mm SPACING *A-BLOCK* GASKET SET  CAST PISTON PISTON RINGS  WRIST PIN & CLIPS EVERYTHING IN THE PHOTOS OD:...