Dirt Bike Engine
5140 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 - 24244B - Piston Kit - 71.935 mm - Gas Gas | Husqvarna | KTM
Vertex
$254.95Vertex - 09105168 - Piston Kit - 71.935 mm - Gas Gas | Husqvarna | KTMFeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$254.95 -
Vertex - 24243A - Piston Kit - 53.94 mm - Gas Gas | Husqvarna | KTM - Fits 2021 Gas Gas MC 125, 2014-2021 Husqvarna TC 125, 2014-2016 Husqvarna TE 125, 2001-2016 KTM 125 EXC, 2001-2021 KTM 125 SX
Vertex
$171.95Vertex - 09105159 - Piston Kit - 53.94 mm - Gas Gas | Husqvarna | KTMFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston...$171.95 -
Vertex - 24243B - Piston Kit - 53.95 mm - Gas Gas | Husqvarna | KTM
Vertex
$164.95Vertex - 09105160 - Piston Kit - 53.95 mm - Gas Gas | Husqvarna | KTMFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston...$164.95 -
Vertex - WR101-180 - Engine Rebuild Kit - KTM EXC200 - Fits 2000-2002 KTM 200 EXC
Vertex
$1,013.95Vertex - 09031436 - Engine Rebuild Kit - KTM EXC200FeaturesVertex piston kit (standard compression piston, rings, pin and clips)Hot Rods heavy-duty crank (stock stroke with wrist pin bearing)Hot Rods...$1,013.95 -
Vertex - 24267B - Piston Kit - 76.96 mm - Kawasaki KX250F - Fits 2017-2019 Kawasaki KX250F
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$256.95Vertex - 09105175 - Piston Kit - 76.96 mm - Kawasaki KX250FFeaturesThe piston skirt is treated with a Molybdenum Disulphite coating for a faster break-in time and increased piston lifeForged replica...$256.95 -
Vertex - 24213B - Piston Kit - 87.97 mm - Husqvarna | KTM
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$302.95Vertex - 09105144 - Piston Kit - 87.97 mm - Husqvarna | KTMFeaturesThe piston skirt is treated with a Molybdenum Disulphite coating for a faster break-in time and increased piston lifeForged replica...$302.95 -
Vertex - 24238B - Piston Kit - 89.97 mm - Gas Gas | Husqvarna | KTM
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$327.95Vertex - 09105138 - Piston Kit - 89.97 mm - Gas Gas | Husqvarna | KTMFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston...$327.95 -
Vertex - WR101-170 - Engine Rebuild Kit - Kawasaki KX85 - Fits 2014-2024 Kawasaki KX85
Vertex
$828.40Vertex - 09031310 - Engine Rebuild Kit - Kawasaki KX85FeaturesVertex piston kit (standard compression piston, rings, pin and clips)Hot Rods heavy-duty crank (stock stroke with wrist pin bearing)Hot...$828.40 -
Vertex - 23614B - Piston Kit - 52.45 mm - Kawasaki KX100 | Suzuki RM100
Vertex
$197.95Vertex - 09104646 - Piston Kit - 52.45 mm - Kawasaki KX100 | Suzuki RM100FeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$197.95 -
Vertex - 23614C - Piston Kit - 52.46 mm - Kawasaki KX100 | Suzuki RM100
Vertex
$170.95Vertex - 09104647 - Piston Kit - 52.46 mm - Kawasaki KX100 | Suzuki RM100FeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$170.95 -
Vertex - WR101-177 - Engine Rebuild Kit - Honda CRF150R/RB - Fits 2007-2009 Honda CRF150R/RB
Vertex
$911.35Vertex - 09031305 - Engine Rebuild Kit - Honda CRF150R/RBFeaturesIncludes crankshaft, piston kit, complete engine gasket kit with oil seals, main bearings and seals, water pump rebuild kit,...$911.35 -
Vertex - VTK23614A - Top End Piston Kit - 52.44 mm - Kawasaki | Suzuki - Fits 1998-2013 Kawasaki KX100, 2003 Suzuki RM100
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$223.95Vertex - 09104648 - Top End Piston Kit - 52.44 mm - Kawasaki | SuzukiFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$223.95 -
Vertex - WR101-169 - Engine Rebuild Kit - Suzuki RMZ250 - Fits 2013-2015 Suzuki RM-Z250
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$1,249.95Vertex - 09031314 - Engine Rebuild Kit - Suzuki RMZ250FeaturesIncludes crankshaft, piston kit, complete engine gasket kit with oil seals, main bearings and seals, water pump rebuild kit, transmission...$1,249.95 -
Vertex - WR101-174 - Engine Rebuild Kit - Kawasaki KX450F - Fits 2015 Kawasaki KX450F
Vertex
$1,211.95Vertex - 09031309 - Engine Rebuild Kit - Kawasaki KX450FFeaturesIncludes crankshaft, piston kit, complete engine gasket kit with oil seals, main bearings and seals, water pump rebuild kit,...$1,211.95 -
Vertex - 24244C - Piston Kit - 71.945 mm - Gas Gas | Husqvarna | KTM
Vertex
$251.95Vertex - 09105169 - Piston Kit - 71.945 mm - Gas Gas | Husqvarna | KTMFeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$251.95 -
Vertex - 24220A - Piston Kit - 76.95 mm - Yamaha YZ250F - Fits 2016-2018 Yamaha YZ250F
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$269.95Vertex - 09105189 - Piston Kit - 76.95 mm - Yamaha YZ250FFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston lifeForged...$269.95 -
Vertex - 24142A - Piston Kit - 80.96 mm - Gas Gas | Husqvarna | KTM - Fits 2021 Gas Gas MC 250F, 2016-2021 Husqvarna FC 250, 2013-2015 KTM 250 SX-F, 2016-2021 KTM 250 SX-F/XC-F
Vertex
$327.95Vertex - 09105186 - Piston Kit - 80.96 mm - Gas Gas | Husqvarna | KTMFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston...$327.95 -
Vertex - 24244A - Piston Kit - 71.925 mm - Gas Gas | Husqvarna | KTM - Fits 2021 Gas Gas EC 300, 2018-2021 Husqvarna TE 300, 2020-2021 Husqvarna TX 300, 2018-2021 KTM 300 EXC/XC-W, 2020-2021 KTM 300 XC/XC-W/Six Days
Vertex
$254.95Vertex - 09105167 - Piston Kit - 71.925 mm - Gas Gas | Husqvarna | KTMFeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$254.95 -
Vertex - 24212B - Piston Kit - 46.95 mm - Gas Gas | Husqvarna | KTM
Vertex
$136.95Vertex - 09105164 - Piston Kit - 46.95 mm - Gas Gas | Husqvarna | KTMFeaturesPiston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$136.95 -
Vertex - 24243C - Piston Kit - 53.96 mm - Gas Gas | Husqvarna | KTM
Vertex
$164.95Vertex - 09105161 - Piston Kit - 53.96 mm - Gas Gas | Husqvarna | KTMFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston...$164.95 -
Vertex - 711232 - Complete Gasket Set - Polaris
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$102.25Vertex - 09342182 - Complete Gasket Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$102.25 -
Vertex - 810989 - Gasket Kit - Standard Bore - Fits 2017-2018 Honda CRF450R/RX
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$79.22Vertex - 09346003 - Gasket Kit - Standard Bore - HondaFeaturesDesigned to replace OEM gaskets exactlyIncludes coated stainless steel head gasketsHigh-performance oil seals have a...$79.22 -
Vertex - 710310 - Full Top End Set - Polaris
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$106.12Vertex - 09342613 - 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...$106.12 -
Vertex - 810373 - Gasket Kit - Standard Bore - KTM/ Husqvarna - Fits 2016-2018 Husqvarna FC 350, 2017-2019 Husqvarna FE 350, 2017-2018 Husqvarna FX 350, 2017-2020 KTM 350 EXC-F, 2016-2018 KTM 350 SX-F/XC-F
Vertex
$71.97Vertex - 09346009 - Gasket Kit - Standard Bore - KTM/ HusqvarnaFeaturesDesigned to replace OEM gaskets exactlyIncludes coated stainless steel head gasketsHigh-performance oil seals have a...$71.97 -
Vertex - 810372 - Gasket Kit - Standard Bore - Gas Gas/Husqvarna/KTM - Fits 2016-2022 Husqvarna FC 250, 2017-2019 Husqvarna FE 250, 2017-2019 KTM 250 EXC-F, 2015 KTM 250 SX-F Factory Edition, 2016-2022 KTM 250 SX-F/XC-F
Vertex
$83.58Vertex - 09346008 - Gasket Kit - Standard Bore - Gas Gas/Husqvarna/KTMFeaturesDesigned to replace OEM gaskets exactlyIncludes coated stainless steel head gasketsHigh-performance oil seals have a...$83.58 -
Vertex - 710232 - Full Top End Set - Polaris
Vertex
$87.83Vertex - 09342183 - 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...$87.83 -
Vertex - 710311 - Full Top End Set - Arctic Cat
Vertex
$127.38Vertex - 09342611 - 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...$127.38 -
Vertex - 711311 - Complete Gasket Set - Arctic Cat
Vertex
$187.33Vertex - 09342612 - Complete Gasket Set - Arctic CatFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets...$187.33 -
Vertex - VTK22685C-1 - Top End Piston Kit - 53.94 mm - Honda CR125R - Fits 2003 Honda CR125R
Vertex
$189.95Vertex - 09103018 - Top End Piston Kit - 53.94 mm - Honda CR125RFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$189.95 -
Vertex - VTK22481CD - Top End Piston Kit - 44.97 mm - KTM SX65 - Fits 2000-2008 KTM 65 SX
Vertex
$150.95Vertex - 09103117 - Top End Piston Kit - 44.97 mm - KTM SX65FeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$150.95 -
Vertex - VTK23124B - Top End Piston Kit - 66.36 mm - Kawasaki KX250 - Fits 2005-2008 Kawasaki KX250
Vertex
$289.95Vertex - 09103074 - Top End Piston Kit - 66.36 mm - Kawasaki KX250FeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$289.95 -
Vertex - VTK22813CD - Top End Piston Kit - 39.47 mm - KTM 50SX/SX Pro JR - Fits 2002-2008 KTM 50 SX
Vertex
$125.95Vertex - 09103115 - Top End Piston Kit - 39.47 mm - KTM 50SX/SX Pro JRFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$125.95 -
Vertex - VTK22926C-1 - Top End Piston Kit - 63.96 mm - KTM
Vertex
$262.95Vertex - 09103091 - Top End Piston Kit - 63.96 mm - KTMFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston lifeGravity-cast...$262.95 -
Vertex - VTK22926B-1 - Top End Piston Kit - 63.95 mm - Fits 2003-2005 KTM 200 EXC
Vertex
$274.95Vertex - 09103089 - Top End Piston Kit - 63.95 mm - KTMFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston lifeGravity-cast...$274.95 -
Vertex - VTK22581B - Top End Piston Kit - 66.35 mm - Honda CR250R - Fits 1997-2001 Honda CR250R
Vertex
$274.95Vertex - 09103022 - Top End Piston Kit - 66.35 mm - Honda CR250RFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$274.95 -
Vertex - VTK22809B - Top End Piston Kit - 66.35 mm - Honda CR250R - Fits 2002-2004 Honda CR250R
Vertex
$235.95Vertex - 09103023 - Top End Piston Kit - 66.35 mm - Honda CR250RFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$235.95 -
Vertex - VTK24370B - Top End Piston Kit - 47.45 mm - Yamaha YZ85 - Fits 2002-2012 Yamaha YZ85
Vertex
$150.95Vertex - 09103146 - Top End Piston Kit - 47.45 mm - Yamaha YZ85FeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$150.95 -
Vertex - VTK22685C - Top End Piston Kit - 53.94 mm - Honda CR125R - Fits 2000-2002 Honda CR125R
Vertex
$189.95Vertex - 09103019 - Top End Piston Kit - 53.94 mm - Honda CR125RFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$189.95 -
Vertex - VTK23119B - Top End Piston Kit - 53.94 mm - Yamaha YZ125/X - Fits Yamaha 2005-2021 YZ125, 2020-2022 YZ125X
Vertex
$201.95Vertex - 09103133 - Top End Piston Kit - 53.94 mm - Yamaha YZ125/XFeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$201.95 -
Vertex - VTK22854B - Top End Piston Kit - 66.35 mm - Suzuki RM250 - Fits 2003-2005 Suzuki RM250
Vertex
$262.95Vertex - 09103122 - Top End Piston Kit - 66.35 mm - Suzuki RM250FeaturesThe piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston...$262.95
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.