BIG BORE / REBUILD KITS

STAGE 2 PERFORMANCE KIT QMB139 50cc UPGRADED TO 72cc aka 80cc

STAGE 2 PERFORMANCE KIT 4T; CSC GO!, QMB139    TAKES YOUR 50CC QMB139 TO 72CC       KIT INCLUDES SKUS:   0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; QMB139 1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM...

NARAKU 180cc (63mm) GY6 CYLINDER SET (54mm SPACING) WITH *FORGED DOME PISTON*

NARAKU HIGH PERFORMANCE  180cc (63mm) CYLINDER SET FOR 54mm SPACING   INCLUDES CYLINDER JUG (63mm) 54mm SPACING *A-BLOCK* GASKET SET FORGED DOME HIGH COMPRESSION PISTON PISTON RINGS  WRIST PIN & CLIPS EVERYTHING IN THE...

(172cc BORE) 61mm BIG BORE KIT FOR SCOOTER ATV KART 150cc GY6 MOTORS *TYPE 3*

172cc BIG BORE KIT FOR CHINESE SCOOTERS61mm BORE    OUTSIDE CYLINDER DIAMETER IS 64mm   WILL REQUIRE BORING THE BLOCK  ON MOST MODELS     THIS IS FOR *54mm SPACING* A-BLOCK   *YOU WILL NEED TO...

TTMRC GY6 232cc LONG CASE CRANKCASE (67mm) CLASS B-BLOCK *57mm SPACING*

TTMRC GY6 232cc LONG CASE CRANKCASE  (67mm) BORE   *57mm SPACING* B-BLOCK 70mm CLYINDER BORE  CAN BE USED WITH 2V OR 4V CYLINDER HEAD NO BORING REQUIRED, ALREADY SET TO 70mm BORE CAN BE USED WITH 61mm, 63mm, 65mm, 66mm, 67mm...

SSP-G REPLACEMENT CASES FOR OIL COOLED 180cc BIG BORE KIT *B BLOCK* 57mm SPACING

SSP-G REPLACEMENT CASES FOR OIL COOLED 180cc 63mm BOREBIG BORE KIT   SSP-G REPLACEMENT CASES FOR OIL COOLED 180cc BIG BORE KIT. THIS SET INCLUDES LEFT AND RIGHT CASES, RIGHT CASE COVER, AND CASE GASKETS.    THE CRANKCASE IS...

GENUINE BUDDY 50cc, ROUGHHOUSE 50cc PERFORMANCE KIT, MAKES ENGINE A 70cc (STAGE 2)

A COMPLETE OVERHAUL FOR YOUR BUDDY    GIVES YOU MORE ON THE TOP AND BOTTOM END    A MUST HAVE FOR ANYONE WANTING MORE POWER FOR LESS MONEY      KIT INCLUDES:  NCY PERFORMANCE PIPE; GENUINE BUDDY 50,...

70cc *47mm BORE* 2 STROKE BIG BORE REBUILD KIT FOR SCOOTERS WITH JOG MINARELLI CLONE MOTORS (12mm PIN)

70cc 2-STROKE BIG BORE KIT FOR CHINESE SCOOTERS THIS KIT HAS A 47mm CYLINDER BORE   AND 12mm WRIST PIN   ***INCLUDES WRIST PIN BEARING***   WRIST PIN LENGTH: 36.8mm  WRIST PIN DIAMETER: 10mm  PISTON DIAMETER:...

SSP-G GY6 232cc 4V ENGINE POWER KIT

SSP-G 232CC BIG BORE KIT AND 4V CYGNUS STYLE HEAD FOR GY6 ENGINES.   THIS COMPLETE POWER KIT COMES WITH A 67MM CYLINDER KIT AND MATCHING CRANKCASE.  THIS MEANS THERE IS NO MACHINING OF THE CRANKCASE REQUIRED!  THE CRANKCASE IS ALSO...

TFC 63mm Cylinder And Stroker Crankshaft Kit - GY6

63MM TFC CYLINDER AND HEAD, A8 HIGH LIFT CAM, AND +3.0MM STROKER CRANK KIT FOR GY6 150CC VEHICLES WITH A-CASE ENGINES. 190CC DISPLACEMENT!   CYLINDER BORE: 63MM CYLINDER STUD SPACING: 54MM (A CASE) EXHAUST VALVE: 23MM INTAKE VALVE:...

SSP-G 50mm DIO SR PERFORMANCE CYLINDER KIT

50mm HONDA DIO-SR BIG BORE CYLINDER KIT.  KIT INCLUDES CYLINDER, PISTON, RINGS, PISTON PIN, CIR CLIPS,  HEAD GASKET, BASE GASKET AND EXHAUST GASKET.   WHEN YOU USE THIS SSP-G 50mm BIG BORE CYLINDER SET    IN...

100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *64mm VALVES* EGR

100cc (50mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS   TRUE DISPLACEMENT *81.3cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 100cc   THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 81.3 / 100cc...

100cc (50mm BORE) KIT FOR SCOOTERS QMB139 MOTORS *69mm VALVES* EGR

100cc (50mm BORE) UPGRADE KIT (#2) FOR QMB139 MOTORS   TRUE DISPLACEMENT *81.3cc WITH STOCK CRANK* PEOPLE REFER TO THIS KIT AS 100cc   THIS KIT IS TO UPGRADE YOUR STOCK 50cc QMB139 MOTOR AND TURN IT INTO A 81.3 / 100cc...