Wsm
WSM is a trusted manufacturer of marine and powersports engine components designed for jet skis, personal watercraft (PWC), snowmobiles and small engines. The brand is known for piston kits, top-end rebuild kits, crank seals and jet pump components built for reliable performance and durability. WSM products are widely used in Sea-Doo, Yamaha, Kawasaki, Polaris and Arctic Cat engine rebuilds. These parts are engineered for precise fitment, long service life and consistent engine performance in demanding water and snow conditions.
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Out of stock
Wsm - 09031349 - Top End Kit - 90.75 mm - Honda
Wsm
$157.44Wsm - 09031349 - Top End Kit - 90.75 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsEngine...$157.44 -
Out of stock
Wsm - 09031348 - Top End Kit - 90.50 mm - Honda
Wsm
$157.44Wsm - 09031348 - Top End Kit - 90.50 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$157.44 -
Wsm - 09031347 - Top End Kit - 90.25 mm - Honda
Wsm
$157.44Wsm - 09031347 - Top End Kit - 90.25 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$157.44 -
Out of stock
Wsm - 09031346 - Top End Kit - 90.00 mm - Fits 1998-2004 Honda TRX450ES
Wsm
$149.94Wsm - 09031346 - Top End Kit - 90.00 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$149.94 -
Wsm - 09031345 - Top End Kit - 79.50 mm - Honda
Wsm
$155.89Wsm - 09031345 - Top End Kit - 79.50 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$155.89 -
Wsm - 09031344 - Top End Kit - 79.25 mm - Honda
Wsm
$155.89Wsm - 09031344 - Top End Kit - 79.25 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$155.89 -
Out of stock
Wsm - 09031343 - Top End Kit - 79.00 mm - Honda
Wsm
$155.89Wsm - 09031343 - Top End Kit - 79.00 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsEngine...$155.89 -
Wsm - 09031342 - Top End Kit - 78.75 mm - Honda
Wsm
$155.89Wsm - 09031342 - Top End Kit - 78.75 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsBore Size...$155.89 -
Out of stock
Wsm - 09031341 - Top End Kit - 78.50 mm - Fits 2000-2006 Honda TRX350FM/FE/TM/TE
Wsm
$155.89Wsm - 09031341 - Top End Kit - 78.50 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsOverbore...$155.89 -
Out of stock
Wsm - 09031340 - Top End Kit - 75.00 mm - Honda
Wsm
$141.18Wsm - 09031340 - Top End Kit - 75.00 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsProduct...$141.18 -
Out of stock
Wsm - 09031339 - Top End Kit - 74.75 mm - Honda
Wsm
$151.20Wsm - 09031339 - Top End Kit - 74.75 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsEngine...$151.20 -
Wsm - 09031338 - Top End Kit - 74.50 mm - Honda
Wsm
$151.20Wsm - 09031338 - Top End Kit - 74.50 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsBore Size...$151.20 -
Out of stock
Wsm - 09031337 - Top End Kit - 74.25 mm - Honda
Wsm
$151.20Wsm - 09031337 - Top End Kit - 74.25 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsProduct...$151.20 -
Wsm - 09031336 - Top End Kit - 74.00 mm - Fits 1988-2000 Honda TRX300FW
Wsm
$151.20Wsm - 09031336 - Top End Kit - 74.00 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$151.20 -
Out of stock
Wsm - 09031335 - Top End Kit - 87.00 mm - Honda
Wsm
$181.04Wsm - 09031335 - Top End Kit - 87.00 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsEngine...$181.04 -
Wsm - 09031334 - Top End Kit - 86.75 mm - Honda
Wsm
$190.09Wsm - 09031334 - Top End Kit - 86.75 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsEngine...$190.09 -
Out of stock
Wsm - 09031333 - Top End Kit - 86.50 mm - Honda
Wsm
$181.04Wsm - 09031333 - Top End Kit - 86.50 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$181.04 -
Wsm - 09031332 - Top End Kit - 86.25 mm - Honda
Wsm
$190.09Wsm - 09031332 - Top End Kit - 86.25 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$190.09 -
Wsm - 09031331 - Top End Kit - 86.00 mm - Fits 1995-2003 Honda TRX400FW
Wsm
$190.09Wsm - 09031331 - Top End Kit - 86.00 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$190.09 -
Out of stock
Wsm - 09031330 - Top End Kit - 93.00 mm - Honda
Wsm
$213.28Wsm - 09031330 - Top End Kit - 93.00 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke...$213.28 -
Out of stock
Wsm - 09031328 - Top End Kit - 92.50 mm - Honda
Wsm
$203.12Wsm - 09031328 - Top End Kit - 92.50 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsBore Size...$203.12 -
Out of stock
Wsm - 09031327 - Top End Kit - 92.25 mm - Honda
Wsm
$213.28Wsm - 09031327 - Top End Kit - 92.25 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsEngine...$213.28 -
Out of stock
Wsm - 09031326 - Top End Kit - 92.00 mm - Fits 2005-2011 Honda TRX500FE/FM Foreman
Wsm
$213.28Wsm - 09031326 - Top End Kit - 92.00 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsOverbore...$213.28 -
Out of stock
Wsm - 09031031 - Top-End Rebuild Kit - 75.50 mm - Platinum Series - Polaris
Wsm
$163.30Wsm - 09031031 - Top-End Rebuild Kit - 75.50 mm - Platinum Series - PolarisFeaturesIncludes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust...$163.30 -
Out of stock
Wsm - 09031030 - Top-End Rebuild Kit - 75.25 mm - Platinum Series - Polaris
Wsm
$163.30Wsm - 09031030 - Top-End Rebuild Kit - 75.25 mm - Platinum Series - PolarisFeaturesIncludes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust...$163.30 -
Out of stock
Wsm - 09031029 - Top-End Rebuild Kit - 75.00 mm - Platinum Series - Polaris
Wsm
$163.30Wsm - 09031029 - Top-End Rebuild Kit - 75.00 mm - Platinum Series - PolarisFeaturesIncludes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust...$163.30 -
Out of stock
Wsm - 09031028 - Top-End Rebuild Kit - 74.75 mm - Platinum Series - Polaris
Wsm
$163.30Wsm - 09031028 - Top-End Rebuild Kit - 74.75 mm - Platinum Series - PolarisFeaturesIncludes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust...$163.30 -
Out of stock
Wsm - 09031027 - Top-End Rebuild Kit - 74.50 mm - Platinum Series - Fits 1996-1999 Polaris 300 Trail Boss/Explorer
Wsm
$155.52Wsm - 09031027 - Top-End Rebuild Kit - 74.50 mm - Platinum Series - PolarisFeaturesIncludes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust...$155.52 -
Out of stock
Wsm - 09030758 - Top-End Rebuild Kit - 84.00 mm - Platinum Series - Polaris
Wsm
$143.04Wsm - 09030758 - Top-End Rebuild Kit - 84.00 mm - Platinum Series - PolarisFeaturesIncludes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust...$143.04 -
Out of stock
Wsm - 09030757 - Top-End Rebuild Kit - 83.50 mm - Platinum Series - Polaris
Wsm
$150.19Wsm - 09030757 - Top-End Rebuild Kit - 83.50 mm - Platinum Series - PolarisFeaturesIncludes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust...$150.19 -
Wsm - 09030756 - Top-End Rebuild Kit - 83.00 mm - Platinum Series - Fits 1997-2003 Polaris 400 (all 2-stroke)
Wsm
$150.19Wsm - 09030756 - Top-End Rebuild Kit - 83.00 mm - Platinum Series - PolarisFeaturesIncludes pistons, rings, pins, clips, racing needle bearings, head and base gaskets, intake and exhaust...$150.19 -
Out of stock
Wsm - 011216 - Crank Case Block Off Plate - Yamaha
Wsm
$14.34Wsm - 011216 - Crank Case Block Off Plate - YamahaFeaturesWashers not includedSpecsMaterialBillet AluminumRiding StyleWatercraftProduct NameBlock Off...$14.34 -
Wsm - 011213 - Crank Case Block Off Plate - Sea Doo
Wsm
$14.36Wsm - 011213 - Crank Case Block Off Plate - Sea DooFeaturesWashers not includedSpecsColor/FinishBlackUnitsKitMaterialBillet AluminumProduct NameBlock Off PlateRiding...$14.36 -
Wsm - 011212 - Crank Case Block Off Plate - Sea Doo
Wsm
$14.36Wsm - 011212 - Crank Case Block Off Plate - Sea DooFeaturesWashers not includedSpecsRiding StyleWatercraftMaterialBillet AluminumProduct NameBlock Off...$14.36 -
Out of stock
Wsm - 011208 - Crank Case Block Off Plate - Polaris
Wsm
$14.36Wsm - 011208 - Crank Case Block Off Plate - PolarisFeaturesWashers not includedSpecsColor/FinishBlackUnitsKitRiding StyleWatercraftTypeCrankcaseProduct NameBlock Off PlateMaterialBillet...$14.36 -
Wsm - 011206 - Oil Injection Block Off Plate - Kawasaki/Yamaha
Wsm
$14.36Wsm - 011206 - Oil Injection Block Off Plate - Kawasaki/YamahaFeaturesWashers not includedSpecsTypeOil InjectionColor/FinishBlackUnitsKitRiding StyleWatercraftMaterialBillet AluminumProduct NameBlock...$14.36 -
Wsm - 011205 - Oil Injection Block Off Plate - Kawasaki/Yamaha
Wsm
$14.34Wsm - 011205 - Oil Injection Block Off Plate - Kawasaki/YamahaFeaturesWashers not includedSpecsRiding StyleWatercraftMaterialBillet AluminumProduct NameBlock Off PlateTypeOil...$14.34 -
Wsm - 004120 - Starter Solenoid - Sea Doo
Wsm
$26.84Wsm - 004120 - Starter Solenoid - Sea Doo Features Replacement Part for OEM Number(s):278000342 Specs Product Name Relay Riding...$26.84 -
Wsm - 003405 - Bearing Housing - Jet Pump/Impeller Shaft - Kawasaki
Wsm
$125.28Wsm - 003405 - Bearing Housing - Jet Pump/Impeller Shaft - Kawasaki Features Complete assemblies sold separately. Replacement Part for OEM...$125.28 -
Wsm - 13-852 - Degree Wheel
Wsm
$13.14Wsm - 13-852 - Degree WheelFeaturesPlastic degree wheel made exclusively for enginesA must for anyone modifying or repairing enginesSpecsUnitsEachMaterialPlasticTypeIgnition...$13.14
WSM specializes in high-quality engine rebuild and marine performance components designed for personal watercraft and powersports applications. The brand is strongly associated with search terms such as Sea-Doo piston kit, jet ski engine rebuild kit, PWC top end rebuild kit and marine engine repair parts, making it a key choice for engine restoration and maintenance.
The product range includes piston rings, piston kits, complete gasket sets and top-end rebuild kits available in multiple bore sizes for Yamaha, Kawasaki, Polaris and Sea-Doo platforms. WSM also manufactures critical engine components such as crankshaft seals, rotary valve shafts, motor mounts, fuel system filters, carburetor fittings and ignition components. In addition, the brand offers jet pump wear rings, impellers, drive shafts, couplers and pump repair kits, which are essential for maintaining propulsion efficiency in personal watercraft.
WSM products are widely used in jet ski engine rebuilds, PWC maintenance, snowmobile repairs and marine performance restoration projects. Common search terms include Sea-Doo engine rebuild kit, Yamaha WaveRunner piston replacement, jet ski pump repair kit, PWC crank seal kit and marine engine gasket set. With a strong focus on precision engineering and compatibility across major OEM platforms, WSM remains a trusted solution for technicians and enthusiasts restoring or upgrading marine and powersports engines.