Motocross/Dirt Bike Engine Parts

Motorcycle Engine Parts

Featured Brands

  • Wiseco® - Single Piston Kit
    Wiseco®Single Piston Kit (4689M07300)
    0
    # mpn4704144986
    Single Piston Kit (4689M07300) by Wiseco®. 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...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $155.35
  • Castrol® - Power 1 SAE 10W-50 Synthetic 4T Engine Oil, 1 Quart
    Castrol®Power 1 SAE 10W-50 Synthetic 4T Engine Oil, 1 Quart (15D2C1)
    0
    # mpn4846274136
    Power 1 SAE 10W-50 Synthetic 4T Engine Oil, 1 Quart by Castrol®. 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....
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $13.49
  • Motul USA® - Snow Power 2-Stroke Semi-Synthetic Engine Oil, 1 Liter x 12 Bottles
    Motul USA®Snow Power 2-Stroke Semi-Synthetic Engine Oil, 1 Liter x 12 Bottles (105887)
    0
    # mpn4781481822
    Snow Power 2-Stroke Semi-Synthetic Engine Oil, 1 Liter x 12 Bottles (105887) by Motul USA®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and...
    Made to provide the perfect lubricant solution for your needsDesigned with innovative manufacturing techniques
    $110.16
  • S&S Cycle® - Chain Drive 124" Oil Cooled Power Package
    S&S Cycle®Chain Drive 124" Oil Cooled Power Package (310-1052B)
    0
    # mpn4841041348
    Chain Drive 124" Oil Cooled Power Package (310-1052B) by S&S Cycle®. 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....
    Big Bore Kit:107" to 124" Big Bore Kit
    $3,076.95
  • S&S Cycle® - Chain Drive 124" Oil Cooled Power Package
    S&S Cycle®Chain Drive 124" Oil Cooled Power Package (310-1056B)
    0
    # mpn4841041313
    Chain Drive 124" Oil Cooled Power Package (310-1056B) by S&S Cycle®. 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....
    Big Bore Kit:107" to 124" Big Bore Kit
    $3,076.95
  • S&S Cycle® - T111 T111 Long Block Engine
    S&S Cycle®T111 T111 Long Block Engine (310-0770A)
    0
    # mpn4841041359
    T111 T111 Long Block Engine by S&S Cycle®. A lot of riders have already invested in performance upgrades for their stock engine by the time they are ready to move up to a complete big inch engine. Wouldn’t it be nice to be able to...
    No fuel system or ignition systems included - Use what you already haveSpecial Head machining – Fits stock length intake manifolds (S&S manifold size 410)
    $7,461.95
  • S&S Cycle® - T124 Black Edition T124 Black Edition Long Block Engine
    S&S Cycle®T124 Black Edition T124 Black Edition Long Block Engine (310-0900A)
    0
    # mpn4841041338
    T124 Black Edition T124 Black Edition Long Block Engine by S&S Cycle®. S&S T124 engines are now available for 2006-17 Harley-Davidson® Dyna® models. (Silver finish and other displacements available by special order). The crankcases of...
    Same awesome performance as all S&S T-Series enginesEngines sold without fuel or ignition systems
    $8,183.95
  • S&S Cycle® - T143 Black Edition T143 Black Edition Long Block Engine
    S&S Cycle®T143 Black Edition T143 Black Edition Long Block Engine (310-1080B)
    0
    # mpn4841041340
    T143 Black Edition T143 Black Edition Long Block Engine by S&S Cycle®.
    $1,876.95
  • S&S Cycle® - Blue Anodized Finish Camplate Oil Pump Kit
    S&S Cycle®Blue Anodized Finish Camplate Oil Pump Kit (310-0998B)
    0
    # mpn4660883370
    Blue Anodized Finish Camplate Oil Pump Kit with Oil Cooled (310-0998B) by S&S Cycle®. 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...
    Precise engineering ensures the latest in qualityExpertly manufactured from highly reliable materials
    $802.95
  • S&S Cycle® - Cam Chain Tensioner
    S&S Cycle®Cam Chain Tensioner (330-0737)
    0
    # mpn4841041341
    Cam Chain Tensioner by S&S Cycle®. 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...
    Superior valve train controlThicker shoe for longer wear
    $90.95
  • S&S Cycle® - Forged Roller Rocker Arms
    S&S Cycle®Forged Roller Rocker Arms (900-1087)
    0
    # mpn4841041361
    Forged Roller Rocker Arms (900-1087) by S&S Cycle®.
    $143.96
  • S&S Cycle® - Forged Roller Rocker Arms
    S&S Cycle®Forged Roller Rocker Arms (900-1084)
    0
    # mpn4841041360
    Forged Roller Rocker Arms (900-1084) by S&S Cycle®.
    $590.95
  • Wiseco® - Valve Adjustment Shim Kit
    Wiseco®Valve Adjustment Shim Kit (VSK3)
    0
    # mpn4642638307
    Valve Adjustment Shim Kit (VSK3) by Wiseco®. 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...
    Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials
    $81.24
  • Blue Magic® - 2-Stroke Engine Oil
    Blue Magic®2-Stroke Engine Oil (5593)
    0
    # mpn4732454300
    2-Stroke Engine Oil, by Blue Magic®. 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...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $3.87
  • Blue Magic® - Concentrated Engine Flush, 1 Quart
    Blue Magic®Concentrated Engine Flush, 1 Quart (4608)
    0
    # mpn4721706162
    Concentrated Engine Flush, 1 Quart (4608) by Blue Magic®. 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...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $8.83
  • Blue Magic® - Concentrated Engine Flush, 16 fl oz
    Blue Magic®Concentrated Engine Flush, 16 fl oz (4609)
    0
    # mpn4721706151
    Concentrated Engine Flush, 16 fl oz (4609) by Blue Magic®. 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...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $4.36
  • Blue Magic® - High Viscosity Additive oil, 12 fl oz
    Blue Magic®High Viscosity Additive oil, 12 fl oz (4624)
    0
    # mpn4721706156
    High Viscosity Additive oil, 12 fl oz by Blue Magic®. 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...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $6.03
  • Motul USA® - 300V SAE 10W-40 Synthetic FL Road Racing Motor Oil, 208 Liter
    Motul USA®300V SAE 10W-40 Synthetic FL Road Racing Motor Oil, 208 Liter (104370)
    0
    # mpn4781481834
    300V SAE 10W-40 Synthetic FL Road Racing Motor Oil, 208 Liter (104370) by Motul USA®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $3,751.72
  • Shell® - Pennzoilâ„¢ Outboard Multi-Purpose 2-Stroke Engine Oil, 1 Quart
    Shell®Pennzoil™ Outboard Multi-Purpose 2-Stroke Engine Oil, 1 Quart (550035261)
    0
    # mpn4737788401
    Pennzoil™ Outboard Multi-Purpose 2-Stroke Engine Oil, 1 Quart by Shell®. From the maker of the leading motor oil in America, anadvanced proprietary conventional formula with Active Cleansing Agents. Not only helps prevent dirt...
    Pennzoil High Mileage Vehicleâ„¢ Motor Oil with ActiveCleansing TechnologyCleans out up to 40% of engine sludge in 1st oil change
    $7.15
  • Valvoline® - Motorcycle SAE 10W-40 Semi-Synthetic 4T Engine Oil, 1 Quart
    Valvoline®Motorcycle SAE 10W-40 Semi-Synthetic 4T Engine Oil, 1 Quart (798151)
    0
    # mpn4806220698
    Motorcycle SAE 10W-40 Semi-Synthetic 4T Engine Oil, 1 Quart by Valvoline®. 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...
    Made to provide the perfect lubricant solution for your needsDesigned with innovative manufacturing techniques
    $8.38
  • Equal-i-zer® - 4 oz. High Performance Lubricant
    Equal-i-zer®4 oz. High Performance Lubricant (91-00-4250)
    0
    # mpn3395520437
    4 oz. High Performance Lubricant by Equal-i-zer®. New easy application tube and less odor. Works great for lubricating hitch balls, hitch head, and L-brackets. This product is made of high-quality materials to serve you for years to...
    Reliable solution for your hitch needsDesigned with great care and precision
    $11.50
  • Athena® - Big Bore Complete Cylinder Kit
    Athena®Big Bore Complete Cylinder Kit
    0
    # sp179215
    Big Bore Complete Cylinder Kit by Athena®. 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...
    Special gasket kitEasy-to-follow step-by-step installation instruction
    $307.76 - $1,348.16
  • Athena® - Big Bore Cylinder
    Athena®Big Bore Cylinder
    0
    # sp230057
    Big Bore Cylinder by Athena®. 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...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $326.66 - $492.26
  • Athena® - Big Cylinder Kit
    Athena®Big Cylinder Kit
    0
    # sp182364
    Big Cylinder Kit by Athena®. 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...
    Designed and manufactured using innovative technologiesMade with maximum safety and reliability in mind
    $190.76 - $1,031.36
  • Athena® - Central Head Dome
    Athena®Central Head Dome
    0
    # sp182509
    Central Head Dome by Athena®. 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...
    Designed and manufactured using innovative technologiesMade with maximum safety and reliability in mind
    $54.86 - $58.46
  • Athena® - Cylinder Head
    Athena®Cylinder Head
    0
    # sp157453
    Cylinder Head by Athena®. 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
    $103.46 - $468.86
  • Athena® - Cylinder Kit
    Athena®Cylinder Kit
    0
    # sp188579
    Cylinder Kit by Athena®. 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
    $404.96 - $981.86
  • Athena® - Replacement Cylinder Head
    Athena®Replacement Cylinder Head
    0
    # sp188582
    Replacement Cylinder Head by Athena®. 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...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $103.46 - $130.46
  • Athena® - Stock Complete Cylinder Kit
    Athena®Stock Complete Cylinder Kit
    0
    # sp182510
    Stock Complete Cylinder Kit by Athena®. 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...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $583.16 - $838.76
  • Cylinder Works® - Cylinder
    Cylinder Works®Cylinder
    0
    # sp188592
    Cylinder 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 from industry-leading...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $267.26 - $418.46




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.