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4 Stroke Big Bore Kits

4 Stroke Horizontal CT engine Big Bore Kits

4 stroke horizontal engine CT50 50cc, CT70 70cc, CT90 90cc, CT110 110cc, CT125 125cc, 140cc 150cc

4 stroke horizontal engine CT50 50cc, CT70 70cc, CT90 90cc, CT110 110cc, CT125 125cc, 140cc 150cc

HOW CAN YOU UPGRADE YOU 4 STROKE HORIZONTAL ENGINE??

50cc 39mm, 70cc 47mm, 90cc 47mm, 110cc 52.4mm horizontal engines used on dirt bikes and small ATV are all very similar. Lots of people ask us if they can change their 50cc 39mm or 70cc 47mm engines to a 110cc 52.4mm engine. Well here is what you can do. The 50cc engine is the same as the 70cc engine so you can change the cylinder and piston on your to upgrade it to a 70cc without any problems. Here is the where people get confused. The 70cc and 90cc engine has the same 47mm bore, the differance is the 90cc has a longer stroke and uses the same crank shaft as the 110cc engine. This means that in you can change your 90cc to a 110cc by changing the cylinder and piston but in order to change you 70cc to a 90cc or 110cc you will have to change your crank shaft. We are working on a solution for this problem and might make a custom kit to upgrade a 50cc or 70cc engine to a 100cc or 110cc engine. Hope this helps and please don't hesitate to contact us for more info.

CHANGE YOUR 50cc to 70cc -Upgrade 50cc motor to a 70cc motor. Big Bore Kit includes Cylinder head, Cylinder and Piston

CHANGE YOUR 90cc to 110cc -Upgrade 90cc motor to a 110cc motor. Big Bore Kit includes Cylinder head, Cylinder and Piston

CHANGE YOUR 110cc to 125cc

-Upgrade Lifan 125cc motor (52.4mm diam. or 54mm diam. * 55.5mm cylinder heaight) to a 138cc motor (56mm diam. * 55.5mm height). Big Bore Kit includes Cylinder, and Piston

-Upgrade Lifan 125cc motor (LF1P52FMI 52.4mm diameter * 55.5mm height or LF1P54FMI 54mm diameter * 55.5mm height)to a 140cc motor (1P55FMJ 55mm diameter 59mm height). Big Bore Kit includes Cylinder head, Cylinder, Piston and Crank Shaft

-Upgrade Lifan 125cc motor (LF1P52FMI 52.4mm diameter * 55.5mm height or LF1P54FMI 54mm diameter * 55.5mm height)to a 140cc motor (1P55FMJ 55mm diameter 59mm height). Big Bore Kit includes Cylinder, Piston and Crank Shaft.

Air and Water cooled CG engine Big Bore Kits

CG_engine_big_bore_kits_cylinder_kit_change_CG200_200cc-to-250cc_CG250-to_300cc_CG300

CG_engine_big_bore_kits_cylinder_kit_change_CG200_200cc-to-250cc_CG250-to_300cc_CG300

We now have performance cylinder kits or big bore kit for air and water cooled CG engines. CG engines are the vertical engines normally used on chinese ATV, and Dirt Bikes and some go karts.

Change your CG200 63.5mm air cooled engine (163FML)to 65.5mm bore, Kit include piston kit and gasket

Change your CG200 63.5mm water cooled engine (163FML)to 65.5mm bore, Kit include piston kit and gasket

Change your CG250 67mm air cooled engine (167FMM)to 70mm bore,Kit include piston kit and gasket

Change you ZongShen water cooled CG250 67mm engine (167MM)to 70mm bore, Kit include piston kit and gasket

These kits should be in stock by end or October

Thanks

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