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 - 09103487 - Piston Kit - 86.00 mm - Honda
Wsm
$122.25Wsm - 09103487 - Piston Kit - 86.00 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.SpecsEngine...$122.25 -
Out of stock
Wsm - 09103486 - Piston Kit - 85.75 mm - Honda
Wsm
$122.25Wsm - 09103486 - Piston Kit - 85.75 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.SpecsBore -...$122.25 -
Out of stock
Wsm - 09103485 - Piston Kit - 85.50 mm - Honda
Wsm
$128.36Wsm - 09103485 - Piston Kit - 85.50 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$128.36 -
Out of stock
Wsm - 09103484 - Piston Kit - 85.25 mm - Honda
Wsm
$128.36Wsm - 09103484 - Piston Kit - 85.25 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$128.36 -
Out of stock
Wsm - 09103483 - Piston Kit - 85.00 mm - Fits 1999-2009 Honda TRX400EX/FourTrax
Wsm
$122.25Wsm - 09103483 - Piston Kit - 85.00 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$122.25 -
Out of stock
Wsm - 09103482 - Piston Kit - 79.50 mm - Honda
Wsm
$113.93Wsm - 09103482 - Piston Kit - 79.50 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$113.93 -
Wsm - 09103481 - Piston Kit - 79.25 mm - Honda
Wsm
$113.93Wsm - 09103481 - Piston Kit - 79.25 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$113.93 -
Wsm - 09103480 - Piston Kit - 79.00 mm - Honda
Wsm
$113.93Wsm - 09103480 - Piston Kit - 79.00 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$113.93 -
Out of stock
Wsm - 09103479 - Piston Kit - 78.75 mm - Honda
Wsm
$113.93Wsm - 09103479 - Piston Kit - 78.75 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$113.93 -
Out of stock
Wsm - 09103478 - Piston Kit - 78.50 mm - Fits 2000-2006 Honda TRX350 FourTrax
Wsm
$108.50Wsm - 09103478 - Piston Kit - 78.50 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$108.50 -
Out of stock
Wsm - 09103476 - Piston Kit - 74.75 mm - Honda
Wsm
$98.62Wsm - 09103476 - Piston Kit - 74.75 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$98.62 -
Out of stock
Wsm - 09103475 - Piston Kit - 74.50 mm - Honda
Wsm
$98.62Wsm - 09103475 - Piston Kit - 74.50 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$98.62 -
Out of stock
Wsm - 09103474 - Piston Kit - 74.25 mm - Honda
Wsm
$103.55Wsm - 09103474 - Piston Kit - 74.25 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$103.55 -
Out of stock
Wsm - 09103473 - Piston Kit - 74.00 mm - Fits 1998-2000 Honda TRX300 FourTrax
Wsm
$103.55Wsm - 09103473 - Piston Kit - 74.00 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$103.55 -
Out of stock
Wsm - 09103472 - Piston Kit - 87.00 mm - Honda
Wsm
$113.93Wsm - 09103472 - Piston Kit - 87.00 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$113.93 -
Out of stock
Wsm - 09103471 - Piston Kit - 86.75 mm - Honda
Wsm
$113.93Wsm - 09103471 - Piston Kit - 86.75 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$113.93 -
Out of stock
Wsm - 09103470 - Piston Kit - 86.50 mm - Honda
Wsm
$113.93Wsm - 09103470 - Piston Kit - 86.50 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$113.93 -
Wsm - 09103469 - Piston Kit - 86.25 mm - Honda
Wsm
$113.93Wsm - 09103469 - Piston Kit - 86.25 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$113.93 -
Out of stock
Wsm - 09103468 - Piston Kit - 86.00 mm - Honda
Wsm
$108.50Wsm - 09103468 - Piston Kit - 86.00 mm - HondaFeaturesFeatures improved E-clip designContains piston, rings, pin and clipsAdditional rings available separatelyOrder one per cylinder.Replacement Part...$108.50 -
Wsm - 09102730 - Piston Kit - .50mm - Yamaha
Wsm
$103.55Wsm - 09102730 - Piston Kit - .50mm - YamahaFeaturesImproved intake skirt with larger inlet ports for increased acceleration and overall performanceSpecsProduct NamePiston KitBore - Oversize Metric+0...$103.55 -
Wsm - 09102729 - Piston Kit - Standard - Yamaha
Wsm
$98.62Wsm - 09102729 - Piston Kit - Standard - YamahaFeaturesImproved intake skirt with larger inlet ports for increased acceleration and overall performanceSpecsBore - Oversize MetricStandardRiding...$98.62 -
Out of stock
Wsm - 09101325 - Piston Kit - 84.00 mm - Polaris
Wsm
$95.36Wsm - 09101325 - Piston Kit - 84.00 mm - PolarisFeaturesSkirts have a nonabrasive, expansion-retarding MoS2 (Molydenum Disulfide) coating to reduce heat and friction for added power and longevityMoS2...$95.36 -
Wsm - 09101324 - Piston Kit - 83.50 mm - Polaris
Wsm
$95.36Wsm - 09101324 - Piston Kit - 83.50 mm - PolarisFeaturesSkirts have a nonabrasive, expansion-retarding MoS2 (Molydenum Disulfide) coating to reduce heat and friction for added power and longevityMoS2...$95.36 -
Wsm - 09101323 - Piston Kit - 83.00 mm - Polaris
Wsm
$95.36Wsm - 09101323 - Piston Kit - 83.00 mm - PolarisFeaturesSkirts have a nonabrasive, expansion-retarding MoS2 (Molydenum Disulfide) coating to reduce heat and friction for added power and longevityMoS2...$95.36 -
Out of stock
Wsm - 09100281 - Piston Kit - 70.50 mm - Big Bore Long Rod - Yamaha 350 Banshee
Wsm
$184.03Wsm - 09100281 - Piston Kit - 70.50 mm - Big Bore Long Rod - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM Number(s):2GU116360000SpecsEngine...$184.03 -
Wsm - 09100279 - Piston Kit - 69.50 mm - Big Bore Long Rod - Yamaha 350 Banshee
Wsm
$197.10Wsm - 09100279 - Piston Kit - 69.50 mm - Big Bore Long Rod - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM Number(s):2GU116360000SpecsBore -...$197.10 -
Wsm - 09100277 - Piston Kit - 68.50 mm - Big Bore Long Rod - Yamaha 350 Banshee
Wsm
$197.10Wsm - 09100277 - Piston Kit - 68.50 mm - Big Bore Long Rod - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM...$197.10 -
Wsm - 09100272 - Piston Kit - 69.00 mm - Big Bore - Yamaha 350 Banshee
Wsm
$185.83Wsm - 09100272 - Piston Kit - 69.00 mm - Big Bore - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanySpecsBore - Oversize+5,00 mmDisplacement347 ccRiding StyleATVEngine...$185.83 -
Wsm - 09100271 - Piston Kit - 68.50 mm - Big Bore - Yamaha 350 Banshee
Wsm
$185.83Wsm - 09100271 - Piston Kit - 68.50 mm - Big Bore - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM Number(s):2GU116360000SpecsBore - Oversize...$185.83 -
Wsm - 09100270 - Piston Kit - 68.00 mm - Big Bore - Yamaha 350 Banshee
Wsm
$185.83Wsm - 09100270 - Piston Kit - 68.00 mm - Big Bore - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM Number(s):2GU116310094SpecsBore -...$185.83 -
Wsm - 09100269 - Piston Kit - 66.50 mm - Long Rod - Yamaha 350 Banshee
Wsm
$165.25Wsm - 09100269 - Piston Kit - 66.50 mm - Long Rod - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanySpecsBore - Oversize+2,50 mmBore - Oversize Metric+2.50...$165.25 -
Wsm - 09100264 - Piston Kit - 64.00 mm - Long Rod - Yamaha 350 Banshee
Wsm
$160.88Wsm - 09100264 - Piston Kit - 64.00 mm - Long Rod - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM Number(s):2GU116310094SpecsBore -...$160.88 -
Wsm - 09100263 - Piston Kit - 66.50 mm - Big Bore - Yamaha 350 Banshee
Wsm
$155.79Wsm - 09100263 - Piston Kit - 66.50 mm - Big Bore - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM Number(s):2GU116360000SpecsBore -...$155.79 -
Wsm - 09100260 - Piston Kit - 65.00 mm - Yamaha 350 Banshee
Wsm
$155.79Wsm - 09100260 - Piston Kit - 65.00 mm - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM Number(s):2GU116310094SpecsDisplacement347 ccBore Size...$155.79 -
Out of stock
Wsm - 09100259 - Piston Kit - 64.50 mm - Yamaha 350 Banshee
Wsm
$148.37Wsm - 09100259 - Piston Kit - 64.50 mm - Yamaha 350 BansheeFeaturesPorted to match WSM Banshee sleevesMade in GermanyReplacement Part for OEM Number(s):2GU116360000SpecsBore Size Metric64.50 mmPiston...$148.37 -
Wsm - 09031485 - Top End Kit - 93.00 mm - Fits 2014-2017 Polaris Ranger 900/1000
Wsm
$374.80Wsm - 09031485 - Top End Kit - 93.00 mm - PolarisFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsBore Size...$374.80 -
Out of stock
Wsm - 09031484 - Top End Kit - 80.00 mm - Fits 2002-2010 Polaris RZR 800
Wsm
$291.16Wsm - 09031484 - Top End Kit - 80.00 mm - PolarisFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsProduct...$291.16 -
Out of stock
Wsm - 09031483 - Top End Kit - 87.50 mm - Honda
Wsm
$191.47Wsm - 09031483 - Top End Kit - 87.50 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsOverbore...$191.47 -
Wsm - 09031482 - Top End Kit - 87.25 mm - Honda
Wsm
$191.47Wsm - 09031482 - Top End Kit - 87.25 mm - HondaFeaturesIncludes pistons, rings, pins, clips, head and base gaskets and intake and exhaust gaskets and oil filter for 4-stroke modelsSpecsEngine...$191.47 -
Out of stock
Wsm - 09031481 - Top End Kit - 87.00 mm - Honda
Wsm
$182.35Wsm - 09031481 - 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...$182.35
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.