Motocross/Dirt Bike Engine Parts

Motorcycle Engine Parts

Featured Brands

  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (20010-K01)
    0
    # mpn4553052030
    Standard Bore Cylinder Kit (20010-K01) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $501.56
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (20005-K01)
    0
    # mpn4553052021
    Standard Bore Cylinder Kit (20005-K01) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $501.56
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (20003-K01)
    0
    # mpn4553052012
    Standard Bore Cylinder Kit (20003-K01) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $501.56
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (20002-K03)
    0
    # mpn4553052010
    Standard Bore Cylinder Kit (20002-K03) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $501.56
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (10008-K01)
    0
    # mpn4553051941
    Standard Bore Cylinder Kit (10008-K01) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $444.76
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (10006-K02)
    0
    # mpn4553051931
    Standard Bore Cylinder Kit (10006-K02) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $480.76
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (10001-K01)
    0
    # mpn4553051914
    Standard Bore Cylinder Kit (10001-K01) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $399.96
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (50002-K01)
    0
    # mpn4553051462
    Standard Bore Cylinder Kit with Wrist Pin (50002-K01) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $599.16
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (40001-K01)
    0
    # mpn4553051460
    Standard Bore Cylinder Kit with Forged Aluminum Pistons (40001-K01) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $468.76
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (20002-K02)
    0
    # mpn4553051437
    Standard Bore Cylinder Kit with Stock Piston and Ring Oversize (20002-K02) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $483.96
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (20002-K01)
    0
    # mpn4553051436
    Standard Bore Cylinder Kit with Exhaust Gaskets (20002-K01) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $501.56
  • Cylinder Works® - Standard Bore Cylinder Kit
    Cylinder Works®Standard Bore Cylinder Kit (20001-K02)
    0
    # mpn4553051434
    Standard Bore Cylinder Kit with Pistons (20001-K02) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $501.56
  • Cylinder Works® - Standard Bore Hi-Comp Cylinder Kit
    Cylinder Works®Standard Bore Hi-Comp Cylinder Kit (20010-K01HC)
    0
    # mpn4553052031
    Standard Bore Hi-Comp Cylinder Kit with Piston Kit by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $501.56
  • Cylinder Works® - Standard Bore Hi-Comp Cylinder Kit
    Cylinder Works®Standard Bore Hi-Comp Cylinder Kit (10002-K01HC)
    0
    # mpn4553051920
    Standard Bore Hi-Comp Cylinder Kit with Pistons (10002-K01HC) by Cylinder Works®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $471.96
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (YA5780)
    0
    # mpn4632645458
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $104.33
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (YA5533)
    0
    # mpn4632645455
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $140.69
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (YA5476)
    0
    # mpn4632645453
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $128.04
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (YA5378)
    0
    # mpn4632645452
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $140.69
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (YA5377)
    0
    # mpn4632645451
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $152.33
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (YA5348)
    0
    # mpn4632645450
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $140.69
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (YA5183)
    0
    # mpn4632645449
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $128.04
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5538)
    0
    # mpn4632645444
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $152.33
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5485)
    0
    # mpn4632645443
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $142.27
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5472)
    0
    # mpn4632645442
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $99.58
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5471)
    0
    # mpn4632645441
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $152.33
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5449)
    0
    # mpn4632645440
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $128.04
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5358)
    0
    # mpn4632645438
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $128.04
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5354)
    0
    # mpn4632645437
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $145.43
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5351)
    0
    # mpn4632645436
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $128.04
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5350)
    0
    # mpn4632645435
    Cylinder Sleeve by L.A. Sleeve®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $152.33




If you love to ride your dirt bike on the most rugged terrains, you have probably considered modifying it so that your motorcycle could satisfy your demands for power, efficiency, handling, safety, and comfort. After installing an aftermarket exhaust, a new set of sprockets and tires and after tuning your suspension to match your riding style and trail conditions, it is time to get to the heart of your machine, its engine. The motor creates power and torque that moves the vehicle forward. In case you wish to accelerate faster or reach higher maximum speed, consider upgrading your powerplant with our premium-quality motocross or dirt bike engine parts.

We carry a wide assortment of cylinder heads, engine blocks, cylinders, crankshafts, camshafts, valves and valvetrain parts, timing gears and chains, pistons, rings, connecting rods, oil filters, pumps, gaskets, and all of the needed hardware and mounts. Whether you want to upgrade your engine or restore the factory characteristics of your stock unit, we have you covered. On the digital shelves of our online store, we showcase only high-quality dirt bike engine parts designed and produced by some of the most reputable manufacturing companies in the game, such as Wrench Rabbit, Athena, Cylinder Works, All Balls, K&M, and many others.

One of the main components of the motor is a cylinder head. Its dimensions can greatly affect the resulting power. Larger intake and exhaust ports can accommodate larger valves designed to deliver higher volumes of fuel and air mixture into the combustion chamber and ensure quicker evacuation of exhaust gases. Shortened valve guides can accept higher lift cams. A big bore cylinder made from aircraft-grade aluminum works perfectly with a large forged piston. If your camshaft timing chain needs replacement, you have come to the right place. Note that not all kits include a master link, and you may need to purchase it separately.

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All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. It is neither inferred nor implied that any item sold by MOTORCYCLEiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.