4 Stroke Motor Parts

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Cylinder Block

4 Stroke Cylinder Block

cylinder diameters for 125cc Motors: 125cc horizontal motor, Lifan, zongshen brand, (54mm)

125cc horizontal motor (gray motor) (52mm)

125cc vertical motor piston (56.5mm)

Chose Motor Size (cc) and Model

50cc $43.00 70cc $45.00 90cc $48.00 100cc $46.00 110cc $48.00 125cc (52mm) $55.00 125cc (54mm) $55.00

Cylinder Rebuild Kit

Cylinder rebuild kits for 50cc to 250cc Motors. Comes with piston, piston rings, wrist pin, circlips, cylinder block and gaskets.

cylinder diameters for 125cc Motors: 125cc horizontal motor, Lifan, zongshen brand, (54mm)

125cc horizontal motor (gray motor) (52mm)

125cc vertical motor piston (56.5mm)

50cc to 150cc Motors

Chose Motor Size (cc) and Model

50cc $80.00 70cc $80.00 90cc $80.00 100cc $90.00 110cc $90.00 125cc (52mm) $95.00 125cc (54mm) $95.00 150cc (62mm) $80.00

200cc and 250cc Motors

Chose Motor Size (cc) and Model

200cc (63.5mm) Air $110.00 200cc (63.5mm) Water $110.00 250cc (67mm) Air $120.00 250cc (67mm) Water $120.00

Big Bore Kit

This Big bore performance kit comes with everything to oversize your motor. By changing the cylinder and piston you can oversize or change the cc of you motor.

Chose Motor Size (cc) and Model

50cc to a 70cc $80.00 90cc to a 100cc $80.00 125cc to a 140cc $125.00

Piston Rebuild Kit

These are piston rebuild kits for 50cc to 250cc. It comes with piston, piston rings, wrist pin, and circlips.

piston sizes for 125cc motors:

125cc horizontal motor, Lifan, zongshen brand, (54mm, 14mm pin)

125cc horizontal motor (gray motor) (52mm, 13mm pin)

125cc vertical motor piston (56.5mm diameter 15mm pin 48mm pin length)

50cc to 125cc

Chose Motor Size (cc)

50cc $37.00 70cc $37.00 90cc $37.00 100cc $37.00 110cc $37.00 125cc (52mm) $44.00 125cc (54mm) $44.00 125cc High Compression $38.00

150cc to 250cc

Chose Motor Size (cc)

150cc $42.00 200cc $44.00 250cc $46.00

Individual Piston Parts

Piston Only

Chose Motor Size (cc)

50cc $22.00 70cc $22.00 90cc $22.00 100cc $22.00 110cc $25.00 125cc (52mm) $26.00 125cc (54mm) $26.00 150cc $29.00 200cc $29.00 250cc $29.00

Piston Rings Only

Chose Motor Size (cc)

50cc $12.00 70cc $14.00 90cc $14.00 100cc $15.00 110cc $15.00 125cc (52mm) $15.00 125cc (54mm) $15.00 150cc $16.00 200cc $16.00 250cc $16.00

Cylinder Head Housing

Chose Motor Size (cc)

50cc $40.00 70cc / 90cc $40.00 100cc / 110cc $41.00

Cylinder Head Assembly

Chose Motor Size (cc)

50cc $79.00 70cc to 110cc $79.00 110cc (3 valves & no covers) $115.00 125cc $98.00 140cc (no covers) $115.00

Valve Assembly

Chose Motor Size (cc)

50cc $28.00 70cc to 110cc $28.00 125cc $30.00 150cc $30.00 200cc $30.00 250cc $30.00

Individual Valve and Head Parts

Valve Only

Chose Motor Size (cc)

50cc $19.00 70cc to 110cc $19.00 125cc $20.00 150cc $20.00 200cc $20.00 250cc $20.00

Valve and Spring set

Chose Motor Size (cc)

50cc $25.00 70cc to 110cc $25.00 125cc $26.00 150cc $26.00 200cc $26.00 250cc $26.00

Valve Spring Only

Chose Motor Size (cc)

50cc $13.00 70cc to 110cc $13.00 125cc $14.00 150cc $14.00 200cc $14.00 250cc $14.00

Valve Seal Only

Chose Motor Size (cc)

50cc $4.00 70cc to 110cc $4.00 125cc $5.00 150cc $5.00 200cc $5.00 250cc $5.00

Rocker Arm Only

Chose Motor Size (cc)

50cc to 110cc $11.00 125cc (horizontal motor) $12.00

Head Covers

Chose Cover

Small Round Threaded Cover $4.00 Round side Cam Cover $11.00 Top cam / rocker Cover $12.00

Cylinder Head Bolts

Chose Length

188mm $4.00 194mm $4.00 196mm $4.00 202mm $4.00

Cam Shaft

Chose Motor Size (cc)

50cc to 110cc $20.00 125cc Horizontal motor $28.00

Timing Chain

Chose Length

193mm (7 3/5") $12.00 257mm (10 1/8") $12.00 271mm (10 2/3") $12.00

Crank Shaft

Crank Shaft for 50cc, 70cc, 90cc, 100cc, and 110cc motors

Chose Motor Size (cc)

50cc $50.00 70cc / 90cc $55.00 100cc / 110cc $58.00

Crank Case

50cc to 110cc Middle Crank Case

Starter Option

No Starter $42.00 Lower Starter $45.00 Upper Starter $70.00

Right Side Motor Covers

Left Side Pinion, Chain, and Magneto Covers

Oil Pump

Gaskets and Seals

Upper Gasket Set

Crank Case Gaskets

Complete Gasket Set

ALL GASKET SETS ARE IN STOCK!

Crank Shaft Seal

Exhaust Copper Gasket