Motocross/Dirt Bike Engine Parts

Motorcycle Engine Parts

Featured Brands

  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5307)
    0
    # mpn4632645433
    Cylinder Sleeve (KA5307) 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...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $145.43
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5263)
    0
    # mpn4632645432
    Cylinder Sleeve (KA5263) 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...
    Cylinder sleeve made from chrome-moly alloyOutside diameter precision centerless ground
    $128.04
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5121)
    0
    # mpn4632645431
    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 (KA5087)
    0
    # mpn4632645430
    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
    $168.60
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (KA5086)
    0
    # mpn4632645429
    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 (KA5041)
    0
    # mpn4632645428
    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 (H5739)
    0
    # mpn4632645425
    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
    $115.39
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (H5599)
    0
    # mpn4632645423
    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 (H5597)
    0
    # mpn4632645422
    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
    $115.39
  • L.A. Sleeve® - Cylinder Sleeve
    L.A. Sleeve®Cylinder Sleeve (H5489)
    0
    # mpn4632645419
    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 (H5477)
    0
    # mpn4632645418
    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 (H5450)
    0
    # mpn4632645417
    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 (H5448)
    0
    # mpn4632645416
    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 (H5375)
    0
    # mpn4632645413
    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 (H5318)
    0
    # mpn4632645410
    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 (H5291)
    0
    # mpn4632645408
    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 (H5066)
    0
    # mpn4632645406
    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 (FL5534)
    0
    # mpn4632645394
    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 (FL5532)
    0
    # mpn4632645393
    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 (FL5479)
    0
    # mpn4632645392
    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 (FL5420)
    0
    # mpn4632645391
    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 (FL5357)
    0
    # mpn4632645387
    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 (FL5346)
    0
    # mpn4632645386
    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 (FL5255)
    0
    # mpn4632645385
    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 (FL5140)
    0
    # mpn4632645383
    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
  • Outlaw Racing® - Cylinder
    Outlaw Racing®Cylinder (OR4656)
    0
    # mpn4871472589
    Cylinder by Outlaw Racing®. 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...
    Outlaw Racing replacement cylinders are built to exact OEM specifications and tolerances.Cylinders are cast from high quality AC4B aluminum and features genuine Nikasil plated sleeves to allow direct replacement for your stock cylinder.
    $240.38
  • Outlaw Racing® - Replacement Standard Cylinder
    Outlaw Racing®Replacement Standard Cylinder (OR4653)
    0
    # mpn4871472652
    Replacement Standard Cylinder by Outlaw Racing®. 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...
    Outlaw Racing replacement cylinders are built to exact OEM specifications and tolerances.Cylinders are cast from high quality AC4B aluminum and features genuine Nikasil plated sleeves to allow direct replacement for your stock cylinder.
    $232.95
  • Prox® - Cylinder Kit
    Prox®Cylinder Kit (16.950001)
    0
    # mpn4967335290
    Cylinder Kit by Prox®. 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 materials...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $25.72
  • Enduro Engineering® - Clutch Cylinder Guard Kit
    Enduro Engineering®Clutch Cylinder Guard Kit (13-101)
    0
    # mpn4865442974
    Clutch Cylinder Guard Kit by Enduro Engineering®. Saves your slave cylinder and engine case if you throw a chain or fall on a rock. Offers great peace of mind. This top-grade product is expertly made in compliance with stringent...
    Designed specifically for motorcycle applicationsCrafted with maximum comfort and functionality in mind
    $35.96
  • Enduro Engineering® - Clutch Cylinder Guard Kit
    Enduro Engineering®Clutch Cylinder Guard Kit (13-100)
    0
    # mpn4825028885
    Clutch Cylinder Guard Kit by Enduro Engineering®. Saves your slave cylinder and engine case if you throw a chain or fall on a rock. Offers great peace of mind. This top-grade product is expertly made in compliance with stringent...
    Designed specifically for motorcycle applicationsCrafted with maximum comfort and functionality in mind
    $35.96




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.