Dirt Bike Engine
3553 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 - 610402 - Full Top End Gasket Kit - Kawasaki
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$69.97Vertex - PD812326 - Full Top End Gasket Kit - KawasakiFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$69.97 -
Vertex - 610802 - Full Top End Gasket Kit - Polaris
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$85.62Vertex - PD812384 - Full Top End Gasket Kit - PolarisFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$85.62 -
Vertex - 610403 - Full Top End Gasket Kit - Kawasaki
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$57.55Vertex - PD812361 - Full Top End Gasket Kit - KawasakiFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$57.55 -
Vertex - 501414 - Oil Seal - 30 mm x 62 mm x 7 mm - Polaris/Ski-Doo
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$6.43Vertex - OS1306R - Oil Seal - 30 mm x 62 mm x 7 mm - Polaris/Ski-DooFeaturesReplacement Part for OEM Number(s):3083045,3085664Specs$6.43 -
Vertex - 611601 - Complete Gasket Set with Seals - Yamaha
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$115.97Vertex - PD811530 - Complete Gasket Set with Seals - YamahaFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in...$115.97 -
Vertex - 611606 - Complete Gasket Set - Yamaha
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$230.42Vertex - PD811543 - Complete Gasket Set - YamahaFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in the USASpecs$230.42 -
Vertex - 611204 - Complete Gasket Set - Sea-Doo
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$98.00Vertex - PD811432 - Complete Gasket Set - Sea-DooFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in the...$98.00 -
Vertex - 610201 - Full Top End Gasket Kit - Sea-Doo
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$54.30Vertex - PD812435 - Full Top End Gasket Kit - Sea-DooFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$54.30 -
Vertex - 610119 - Full Top End Gasket Kit - Yamaha
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$62.78Vertex - PD812500 - Full Top End Gasket Kit - YamahaFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$62.78 -
Vertex - 611607 - Complete Gasket Set - Yamaha
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$119.67Vertex - PD811541 - Complete Gasket Set - YamahaFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in the USASpecs$119.67 -
Vertex - 611802 - Complete Gasket Set with Seals - Polaris
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$130.45Vertex - PD811384 - Complete Gasket Set with Seals - PolarisFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in...$130.45 -
Vertex - 611608 - Complete Gasket Set - Yamaha
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$301.62Vertex - PD811542 - Complete Gasket Set - YamahaFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in the USASpecs$301.62 -
Vertex - 611119 - Complete Gasket Set - Yamaha
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$103.88Vertex - PD811500 - Complete Gasket Set - YamahaFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in the USASpecs$103.88 -
Vertex - 611200 - Complete Gasket Set - Sea-Doo
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$94.92Vertex - PD811429 - Complete Gasket Set - Sea-DooFeaturesIncludes all head, base, intake, exhaust gaskets and O-rings or oil seals, plus crankshaft end seals and power valve gasketsMade in the...$94.92 -
Vertex - 610103 - Full Top End Gasket Kit - Kawasaki
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$51.03Vertex - PD812325 - Full Top End Gasket Kit - KawasakiFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$51.03 -
Vertex - 610100 - Full Top End Gasket Kit - Kawasaki
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$34.75Vertex - PD812303 - Full Top End Gasket Kit - KawasakiFeaturesPerformance sets are designed for cylinder rebuild and piston replacementMade in the USASpecs$34.75 -
Vertex - 711087 - Complete Gasket Set - John Deere
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$44.20Vertex - G1248 - Complete Gasket Set - John DeereFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$44.20 -
Vertex - 711052 - Complete Gasket Set - John Deere
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$44.20Vertex - G1245 - Complete Gasket Set - John DeereFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$44.20 -
Vertex - 711101 - Complete Gasket Set - Yamaha
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$50.08Vertex - G1101 - Complete Gasket Set - YamahaFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$50.08 -
Vertex - 7111630 - Complete Gasket Set - Ski-Doo/Moto-Ski
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$60.28Vertex - G1085 - Complete Gasket Set - Ski-Doo/Moto-SkiFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets...$60.28 -
Vertex - 711110C - Complete Gasket Set - Polaris
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$52.08Vertex - G110C - Complete Gasket Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$52.08 -
Vertex - 711023 - Complete Gasket Set - Ski-Doo/Moto-Ski
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$43.45Vertex - G1075 - Complete Gasket Set - Ski-Doo/Moto-SkiFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets...$43.45 -
Vertex - 711146A - Complete Gasket Set - Yamaha
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$51.75Vertex - G1104C - Complete Gasket Set - YamahaFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$51.75 -
Vertex - 711033 - Complete Gasket Set - Arctic Cat/Kawasaki
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$48.25Vertex - G1030 - Complete Gasket Set - Arctic Cat/KawasakiFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets...$48.25 -
Vertex - 711149 - Complete Gasket Set - Kawasaki
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$57.53Vertex - G1281 - Complete Gasket Set - KawasakiFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$57.53 -
Vertex - 711106B - Complete Gasket Set - Arctic Cat
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$47.28Vertex - G1291A - Complete Gasket Set - Arctic CatFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$47.28 -
Vertex - 711138 - Complete Gasket Set - Yamaha
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$40.28Vertex - G1103 - Complete Gasket Set - YamahaFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$40.28 -
Vertex - 711063B - Complete Gasket Set - Arctic Cat
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$46.47Vertex - G1113 - Complete Gasket Set - Arctic CatFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$46.47 -
Vertex - 711069 - Complete Gasket Set - Polaris
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$31.63Vertex - G1050 - Complete Gasket Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$31.63 -
Vertex - 711075 - Complete Gasket Set - Polaris
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$51.12Vertex - G1064 - Complete Gasket Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$51.12 -
Vertex - 711025X - Complete Gasket Set - Ski-Doo
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$48.03Vertex - G1076 - 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...$48.03 -
Vertex - 711023A - Complete Gasket Set - Ski-Doo/Moto-Ski
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$47.13Vertex - G1075B - Complete Gasket Set - Ski-Doo/Moto-SkiFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets...$47.13 -
Vertex - 611100 - Complete Gasket Set - Kawasaki
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$54.28Vertex - PD811303 - Complete Gasket Set - KawasakiFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$54.28 -
Vertex - 711022Y - Complete Gasket Set - Ski-Doo
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$31.12Vertex - G1072 - 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...$31.12 -
Vertex - 711266 - Complete Gasket Set - Arctic Cat
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$106.70Vertex - 711266 - Complete Gasket Set - Arctic CatFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$106.70 -
Vertex - 711227 - Complete Gasket Set - Arctic Cat
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$86.72Vertex - 711227 - Complete Gasket Set - Arctic CatFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$86.72 -
Vertex - 711252 - Complete Gasket Set - Polaris
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$105.28Vertex - 711252 - Complete Gasket Set - PolarisFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$105.28 -
Vertex - 7112410 - Complete Gasket Set - Yamaha
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$216.12Vertex - 711241 - Complete Gasket Set - YamahaFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$216.12 -
Vertex - 711247 - Complete Gasket Set - Yamaha
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$133.33Vertex - 711247 - Complete Gasket Set - YamahaFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$133.33 -
Vertex - 711246 - Complete Gasket Set - Yamaha
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$123.13Vertex - 711246 - Complete Gasket Set - YamahaFeaturesFit most current and many non-current engines, including Sachs, JLO, Hirth, CCW, Kohler and XenoahDesigned to replace OEM gaskets exactlyKit...$123.13
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.