50cc - 100cc (QMB139)

NGK DR8EIX IRIDIUM IX SPARK PLUG

designed specifically for the performance enthusiast, iridium ix offers extreme ignitability, improved throttle response and superior anti-fouling  the 0.6mm laser welded fine iridium tip ensures high durability and a consistently stable spark and...

QMB139 50cc - 100cc SCOOTER GEARBOX TRANSMISSION BEARING KIT

QMB139 50cc - 100cc SCOOTER GEARBOX TRANSMISSION BEARING KIT  INCLUDES THE FOLLOWING ITEMS:  *3* 6201 KE23H *1* 6004 RS KE23F *1* 6203 P21N *1* 6303

BELT DRIVE / CRANKCASE COVER FOR 50cc QMB139 MOTORS *SHORT CASE MODEL* COMPLETE

50cc BELT DRIVE / CRANKCASE COVERFOR CHINESE SCOOTERS, ATVS, AND KARTS WITH 50cc QMB139 MOTORSSHORT VERSION FOR SCOOTERS WITH 10" TIRES Overall Length: 15.75 inches Total Mounting Holes: 10 Bolt Holes: 8 Dowel Holes: 2 MAY FIT SOME MODELS...

NARAKU 2V PISTON & RINGS KIT (52.4mm BORE) FOR SCOOTERS QMB139 MOTORS

NARAKU REPLACEMENT PISTON KIT FOR QMB139 4-STROKE 52mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS.   CAST DOME PISTON   PISTON DIAMETER: 52.4mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 37mm FITS...

NARAKU 2V PISTON & RINGS KIT 50cc (39mm BORE) FOR SCOOTERS QMB139 MOTORS

NARAKU REPLACEMENT PISTON KIT FOR QMB139  4-STROKE 39mm BIG BORE CYLINDER KIT KIT INCLUDES PISTON, RINGS, PISTON PIN AND CIR CLIPS.   PISTON DIAMETER: 39mm WRIST PIN DIAMETER: 13mm TOTAL PISTON HEIGHT: 33.5mm   NARAKU...

TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *50mm* QMB139 *81cc/86cc*

TAIDA 50cc QMB139 4-STROKE 50mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET.   WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL...

TAIDA SCOOTER PERFORMANCE BIG BORE CYLINDER & HEAD UPGRADE KIT *52mm* QMB139 *87.9cc/93cc*

TAIDA 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER & HEAD KIT. KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS, CYLINDER HEAD, HEAD GASKET, AND BASE GASKET.   WHEN USED IN CONJUNCTION WITH A STOCK STROKE OF 41.4mm THE TOTAL...

80cc (47mm BORE) BIG BORE KIT FOR SCOOTERS QMB139 MOTORS 69mm VALVES

80cc (47mm BORE) UPGRADE KIT FOR QMB139 MOTORS   TRUE DISPLACEMENT *72cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 80cc   THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139  MOTOR AND TURN IT INTO A 72cc / 80cc MOTOR ADDING MORE POWER...

100cc (50mm BORE) CYLINDER PISTON RINGS GASKETS REBUILD FOR QMB139 SCOOTERS

100cc (50mm BORE) UPGRADE CYLINDER KIT (#1) FOR QMB139 MOTORS   TRUE DISPLACEMENT *81.3cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 100cc    KIT INCLUDES:   CYLINDER BODY : 50mm  TOP & BOTTOM GASKETS PISTON &...

100cc CYLINDER (50mm BORE) FOR CHINESE SCOOTERS WITH 50cc QMB139 MOTORS

100cc CYLINDER FOR CHINESE SCOOTERS *50mm BORE*     CAST IRON CYLINDER: 50mm •    OUTER SLEEVE DIAMETER: 54mm •    CYLINDER HEIGHT (W/O SLEEVE): 53mm •    OVERALL HEIGHT (W/SLEEVE):...

NCY PERFORMANCE GEAR SET (16*42) FOR CHINESE SCOOTERS WITH 50cc qmb139 MOTORS

NCY PERFORMANCE GEAR SET (16*42) FOR CHINESE SCOOTERS WITH 50cc qmb139 MOTORS   CHANGE THE GEAR RATIO ON YOU MOTOR FOR MORE PERFORMANCE   GEAR SET 16*42 FOR 139QMB 49/50CC 4-STROKE ENGINES. THE FINAL DRIVE RATIO IS THE LAST BIT OF...

SSP-G PERFORMANCE CYLINDER HEAD (50mm, 81cc, ALLOY) FOR QMB139 MOTORS

SSP-G 50CC QMB139 4-STROKE 50MM, PERFORMANCE CYLINDER HEAD. PLEASE NOTE: REPLACES CYLINDER HEADS    WITH 64MM VALVES (SHORT VALVE STYLE).   INTAKE VALVE DIAMETER: 23MM INTAKE PORT DIAMETER: 21MM EXHAUST VALVE DIAMETER:...