Dirt Bike Engine
4752 parts
Pistons, top-end kits, gaskets, cylinders, valves, bearings and seals from Vertex, ProX, Wossner, Athena, Cometic, WSM, Boyesen and Moose Offroad. Everything you need for a fresh top end, a full rebuild or a little more power. Shop all dirt bike parts.
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Vertex - 23641A - Piston Kit - 87.96 mm - Husaberg | Husqvarna | KTM - Fits 2014 Husqvarna FE 350, 2014-2016 Husqvarna FC/FE 350, 2011-2012 KTM 350 SX-F
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$302.95Vertex - 09102073 - Piston Kit - 87.96 mm - Husaberg | Husqvarna | KTMFeaturesThe piston skirt is treated with a Molybdenum Disulphite coating for a faster break-in time and increased piston...$302.95 -
Vertex - 23378B - Piston Kit - 95.97 mm - Suzuki RM-Z/RMX450
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$271.95Vertex - 09102099 - Piston Kit - 95.97 mm - Suzuki RM-Z/RMX450FeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston...$271.95 -
Vertex - 23614050 - Piston Kit - 52.94 mm - Kawasaki KX100
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$170.95Vertex - 09102050 - Piston Kit - 52.94 mm - Kawasaki KX100FeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston lifeGravity-cast...$170.95 -
Vertex - 22996B - Piston Kit - 53.93 mm - Honda CR125R - Fits 2004-2007 Honda CR125R
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$171.95Vertex - 09102127 - Piston Kit - 53.93 mm - Honda CR125RFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston...$171.95 -
Vertex - 23654B - Piston Kit - 79.96 mm - Kawasaki KX250F
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$289.95Vertex - 09102060 - Piston Kit - 79.96 mm - Kawasaki KX250FFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston...$289.95 -
Vertex - 22983A - Piston Kit - 77.95 mm - Honda CRF250R/X - Fits Honda 2004-2009 CRF250R, 2004-2017 CRF250X
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$242.95Vertex - 09101747 - Piston Kit - 77.95 mm - Honda CRF250R/XFeaturesThe piston skirt is treated with a Molybdenum Disulphite coating for a faster break-in time and increased piston lifeForged replica...$242.95 -
Vertex - 22926C - Piston Kit - 63.96 mm - KTM 200 EXC/MXC/XC
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$223.95Vertex - 09102547 - Piston Kit - 63.96 mm - KTM 200 EXC/MXC/XCFeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$223.95 -
Vertex - 23647A - Piston Kit - 76.95 mm - Kawasaki KX250F - Fits 2011-2014 Kawasaki KX250F
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$289.95Vertex - 09102572 - Piston Kit - 76.95 mm - Kawasaki KX250FFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston lifeForged...$289.95 -
Vertex - 23599B - Piston Kit - 78.96 mm - Husqvarna TC/TE 250 - Fits 2009-2011 Husqvarna TC/TE 250
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$271.95Vertex - 09102566 - Piston Kit - 78.96 mm - Husqvarna TC/TE 250FeaturesThe piston skirt is coated with high-tech Molybdenum Disulphite coating for faster break in and increased piston lifeForged OE...$271.95 -
Vertex - 23198B - Piston Kit - 95.46 mm - Suzuki RM-Z450
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$289.95Vertex - 09102091 - Piston Kit - 95.46 mm - Suzuki RM-Z450FeaturesThe piston skirt is treated with a Molybdenum Disulphite coating for a faster break-in time and increased piston lifeForged replica...$289.95 -
Vertex - 22600B - Piston Kit - 53.95 mm - Husqvarna CR/SM/WR 125 - Fits 1997-2012 Husqvarna CR/SM/WR 125
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$177.95Vertex - 09102543 - Piston Kit - 53.95 mm - Husqvarna CR/SM/WR 125FeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$177.95 -
Vertex - 22224B - Piston Kit - 53.94 mm - Yamaha YZ125 - Fits 1994-1996 Yamaha YZ125
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$148.95Vertex - 09102116 - Piston Kit - 53.94 mm - Yamaha YZ125FeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston lifeGravity-cast...$148.95 -
Vertex - 23384400 - Piston Kit - 57.95 mm - KTM 125EXC/SX - Fits 2007-2016 KTM 125 SX
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$208.95Vertex - 09102540 - Piston Kit - 57.95 mm - KTM 125EXC/SXFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston lifeUnique...$208.95 -
Vertex - 22896B - Piston Kit - 94.94 mm - Yamaha WR/YZ450F - Fits 2003-2014 Yamaha WR450F
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$302.95Vertex - 09102120 - Piston Kit - 94.94 mm - Yamaha WR/YZ450FFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston lifeForged...$302.95 -
Vertex - 22501B - Piston Kit - 47.44 mm - Suzuki RM80 - Fits 1991-2001 Suzuki RM80
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$137.95Vertex - 09102075 - Piston Kit - 47.44 mm - Suzuki RM80FeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston lifeGravity-cast...$137.95 -
Vertex - 23628A - Piston Kit - 52.44 mm - Fits 2002-2016 Yamaha YZ85
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$177.95Vertex - 09102113 - Piston Kit - 52.44 mm - YamahaFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston lifeCast piston is...$177.95 -
Vertex - 610806 - Full Top End Gasket Kit - Polaris
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$67.05Vertex - 09340271 - Full Top End Gasket Kit - PolarisFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$67.05 -
Vertex - 710276 - Full Top End Set - Arctic Cat
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$100.28Vertex - 09340292 - Full Top End Set - Arctic CatFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyMany...$100.28 -
Vertex - 611407 - Complete Gasket Set - Kawasaki
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$95.95Vertex - 09340266 - Complete Gasket Set - KawasakiFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in the...$95.95 -
Vertex - 719107 - Exhaust Valve Gasket - Polaris
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$7.53Vertex - 09340854 - Exhaust Valve Gasket - PolarisFeaturesContains exhaust valve gaskets, O-rings and seals where requiredSpecs$7.53 -
Vertex - 711209 - Complete Gasket Set - Polaris
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$106.62Vertex - 09340519 - Complete Gasket Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$106.62 -
Vertex - 711285 - Complete Gasket Set - Ski-Doo
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$168.53Vertex - 09340552 - Complete Gasket Set - Ski-DooFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$168.53 -
Vertex - 711283 - Complete Gasket Set - Ski-Doo
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$168.53Vertex - 09340550 - Complete Gasket Set - Ski-DooFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$168.53 -
Vertex - 22978A - Piston Kit - 74.95 mm - Beta | KTM - Fits 2001-2006 KTM 250 EXC-F
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$302.95Vertex - 09102070 - Piston Kit - 74.95 mm - Beta | KTMFeaturesThe piston skirt is treated with a Molybdenum Disulphite coating for a faster break-in time and increased piston lifeForged replica...$302.95 -
Vertex - 23637B - Piston Kit - 48.45 mm - Kawasaki KX85/Big Wheel - Fits 2001-2019 Kawasaki KX85
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$171.95Vertex - 09102048 - Piston Kit - 48.45 mm - Kawasaki KX85/Big WheelFeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$171.95 -
Vertex - 22567A - Piston Kit - 91.93 mm - Yamaha WR/YZ400F - Fits 1998-2000 Yamaha WR400F
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$262.95Vertex - 09101902 - Piston Kit - 91.93 mm - Yamaha WR/YZ400FFeaturesThe piston skirt is treated with a Molybdenum Disulphite coating for a faster break-in time and increased piston lifeForged replica...$262.95 -
Vertex - 23429CD - Piston Kit - 39.47 mm - Gas Gas | Husqvarna | KTM - Fits 2021 Gas Gas MC 50, 2017-2021 Husqvarna TC 50, 2009-2021 KTM 50 SX, 2020-2021 KTM 50 SX Mini
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$99.95Vertex - 09102065 - Piston Kit - 39.47 mm - Gas Gas | Husqvarna | KTMFeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$99.95 -
Vertex - 23430CD - Piston Kit - 44.97 mm - Gas Gas MC65 | Husqvarna TC65 | KTM 65 SX/SXS/XC - Fits 2021 Gas Gas MC 65, 2017-2021 Husqvarna TC 65, 2009-2021 KTM 65 SX
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$104.95Vertex - 09101835 - Piston Kit - 44.97 mm - Gas Gas MC65 | Husqvarna TC65 | KTM 65 SX/SXS/XCFeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and...$104.95 -
Vertex - 22860B - Piston Kit - 44.45 mm - Kawasaski KX65 | Suzuki RM65 - Fits 2000-2021 Kawasaki KX65, 2003-2006 Suzuki RM65
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$131.95Vertex - 09101048 - Piston Kit - 44.45 mm - Kawasaski KX65 | Suzuki RM65FeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$131.95 -
Vertex - 710270 - Full Top End Set - Arctic Cat
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$59.62Vertex - 09340293 - Full Top End Set - Arctic CatFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyMany...$59.62 -
Vertex - 719108 - Exhaust Valve Gasket - Ski-Doo
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$11.13Vertex - 09340855 - Exhaust Valve Gasket - Ski-DooFeaturesContains exhaust valve gaskets, O-rings and seals where requiredSpecs$11.13 -
Vertex - 710298 - Full Top End Set - Polaris
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$95.58Vertex - 09341277 - Full Top End Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyMany kit...$95.58 -
Vertex - 710278 - Full Top End Set - Ski-Doo
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$76.08Vertex - 09340304 - Full Top End Set - Ski-DooFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyMany kit...$76.08 -
Vertex - 610210 - Full Top End Gasket Kit - Sea-Doo
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$142.28Vertex - 09342185 - Full Top End Gasket Kit - Sea-DooFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$142.28 -
Vertex - 711291 - Complete Gasket Set - Polaris
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$153.45Vertex - 09340843 - Complete Gasket Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$153.45 -
Vertex - 719102 - Exhaust Valve Gasket - Arctic Cat
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$9.53Vertex - 09340849 - Exhaust Valve Gasket - Arctic CatFeaturesContains exhaust valve gaskets, O-rings and seals where requiredSpecs$9.53 -
Vertex - 715185 - Reed Cage Gasket - Ski-Doo
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$5.30Vertex - 09340835 - Reed Cage Gasket - Ski-DooFeaturesReplacement Part for OEM Number(s):420950292SpecsType$5.30 -
Vertex - 715172 - Reed Cage Gasket - Yamaha
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$4.64Vertex - 09340839 - Reed Cage Gasket - YamahaFeaturesSpecsRiding StyleSnow$4.64 -
Vertex - 717268 - Reed Cage Gasket - Ski-Doo
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$5.60Vertex - 09340836 - Reed Cage Gasket - Ski-DooFeaturesSpecsProduct NameGasket$5.60 -
Vertex - 710079 - Full Top End Set - Polaris
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$41.75Vertex - 09340533 - Full Top End Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyMany kit...$41.75
Dirt Bike Pistons, Top-End Kits and Engine Rebuild Parts
Every dirt bike engine needs a refresh eventually. Ride long enough and the piston wears, compression drops and the bike just doesn't pull like it used to. Staying on top of top-end maintenance keeps your bike making power and keeps a cheap rebuild from turning into an expensive one.
We carry pistons and complete top-end kits from Vertex, Wossner, ProX and Athena, full gasket sets from Cometic and Athena, plus valves, springs, cam chains, bearings, seals and crank kits for full rebuilds. Boyesen reed valves and engine covers add performance and protection on two-strokes and four-strokes alike.
While the engine is apart, refresh the rest: fresh air filters and carb parts from fuel and intake, oil filters and fluids from oils and chemicals, and repacking or a new pipe from dirt bike exhaust.
Engine parts are specific to make, model, year and sometimes bore size, so check fitment carefully before ordering. If you're not sure what your rebuild needs, send us your bike's details and we'll help put the parts list together.