52.4mm Cylinder Gasket and Piston Ring Set for CRF125F/CRF125FB, 2014–2023
$150.00
In stock · Free Shipping
54mm 100cc Big Bore 2-Stroke Top End Rebuild Kit SY-83740718 for Polaris 90 ATVs
$133.88
In stock
✓ Free Shipping
54mm big bore top end rebuild kit for converting a standard 90cc 2-stroke Polaris ATV engine to 100cc. Includes cylinder, cylinder head, piston assembly, gaskets, reed valve, bearing, spark plug, and related components.
Price shown is the online purchase price. Free shipping · 30-day return policy
Product Description
This complete 54mm big bore top end rebuild kit is designed for Polaris Sportsman 90, Scrambler 90, and Predator 90 2-stroke ATVs. The kit includes an iron cylinder and cylinder head, piston assembly, piston rings, piston pin, circlips, connecting rod bearing, spark plug, intake manifold, reed valve, and required gaskets for a 100cc engine rebuild.
Product Specifications
BrandGeneric
Manufacturer Part NumberSY-83740718
Item Weight26.4 pounds
ModelCylinder Head
Package Dimensions11.81 x 11.81 x 11.81 inches
Item model numberCylinder Head
ExteriorPolished
OEM Part Number12600788, 12605265, 12578161 12613989, 12624550
Explicit Manufacturer Part NumberSY-83740718
Explicit OE/OEM Part Numbers12600788, 12605265, 12624550, price, specifications, Standard, standards
Bore size54mm
Engine displacement100cc
Original displacement90cc
MaterialIron
Kit typeCylinder piston kit
Included componentsCylinder, cylinder head, piston, piston rings, piston pin, circlips, connecting rod bearing, spark plug, head gasket, base gasket, intake manifold, reed valve, reed valve gasket, exhaust gasket
Package weight26.4 pounds
FinishPolished
Motorcycle Compatibility
| Year | Make | Model | Power / Engine | Variant |
|---|---|---|---|---|
| — | Polaris | Predator 90 | 2-stroke | 90cc ATV |
| — | Polaris | Scrambler 90 | 2-stroke | 90cc ATV |
| — | Polaris | Sportsman 90 | 2-stroke | 90cc ATV |
Always compare the part number, dimensions, specifications, and compatibility details with your original part before ordering.
