Motorcycle Crankshaft & Components

Motorcycle Crankshafts & Components

  • Wiseco® - Complete Bottom End Rebuild Crankshaft Kit
    Wiseco®Complete Bottom End Rebuild Crankshaft Kit
    0
    # sp177216
    Complete Bottom End Rebuild Crankshaft Kit by Wiseco®. Multi-cylinder applications come complete with main bearings (unless specified otherwise). Pre-assembled and precision trued to OEM specifications. Ready for installation. Every...
    Shot peened rodsSuperior strength under heavy loads
    $248.63 - $590.92
  • Hot Rods® - Crankshaft Main Bearing and Seal Kit
    Hot Rods®Crankshaft Main Bearing and Seal Kit
    0
    # sp172434
    Crankshaft Main Bearing and Seal Kit by Hot Rods®. Replacement. A quality alternative to expensive OEM bearings and seals. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
    Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality
    $45.86 - $158.36
  • Hot Rods® - Bottom End Kit
    Hot Rods®Bottom End Kit
    0
    # sp172431
    Bottom End Kit by Hot Rods®. Kit contains Hot Rods OEM replacement crankshaft, main bearings and seals, and complete gasket set for a complete and hassle-free installation. Bolt in and go.
    Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality
    $175.96 - $757.56
  • Hot Rods® - Heavy Duty Crankshaft Kit
    Hot Rods®Heavy Duty Crankshaft Kit
    0
    # sp172436
    Heavy Duty Crankshaft Kit by Hot Rods®. 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...
    Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality
    $206.96 - $494.06
  • ProX® - Crankshaft Bearing
    ProX®Crankshaft Bearing
    0
    # sp160503
    Crankshaft Bearing by ProX®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...
    Carefully developed for the highest level of qualityReady to serve reliably for years to come
    $31.68
  • ProX® - Crankshaft Bearing and Seal Kit
    ProX®Crankshaft Bearing and Seal Kit
    0
    # sp147078
    Crankshaft Bearing and Seal Kit by ProX®. Crankshaft bearings and seals are manufactured at leading OEM factories, mainly in Japan. All bearings and seals are made to exact OEM specifications, to ensure maximum quality and performance....
    Carefully developed for the highest level of qualityReady to serve reliably for years to come
    $29.43 - $132.17
  • Hot Rods® - Crankshaft Kit
    Hot Rods®Crankshaft Kit
    0
    # sp172433
    Crankshaft Kit by Hot Rods®. With connecting rods. 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...
    Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality
    $112.46 - $564.26
  • Steahly Off Road® - Flywheel Weight
    Steahly Off Road®Flywheel Weight
    0
    # sp155802
    Flywheel Weight by Steahly Off Road®. 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...
    Precision-machined from stainless steelBolt-on installation at end of crank no drilling or tapping required
    $140.02 - $157.76
  • Hot Rods® - Counter Balancer Bearing Kit
    Hot Rods®Counter Balancer Bearing Kit
    0
    # sp230035
    Counter Balancer Bearing Kit by Hot Rods®. Hot Rods counterbalance kits repair leaking countershaft seals. A must-have, these replacement kits include trusted Hot Rods bearings for the counterbalancer shaft for most modern 4-stroke...
    Expertly crafted from premium materialsDesigned to match rigorous quality standards
    $16.80 - $19.76
  • Hot Rods® - Crankshaft Assemblies
    Hot Rods®Crankshaft Assemblies
    0
    # sp230036
    Crankshaft Assemblies by Hot Rods®. Are you looking to replace a broken, worn-out crankshaft assembly? Hot Rods complete crankshaft assemblies are sold with Hot Rods connecting rods and wrist pin bearings. These crankshafts are factory...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $336.56 - $415.76
  • Athena® - Crankshaft
    Athena®Crankshaft
    0
    # sp157451
    Crankshaft 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...
    Designed and manufactured using innovative technologiesMade with maximum safety and reliability in mind
    $146.66 - $247.46
  • HardDrive® - Crankshaft Pin
    HardDrive®Crankshaft Pin
    0
    # sp162626
    Crankshaft Pin by HardDrive®. 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...
    Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials
    $53.96
  • JIMS® - Crank Pins
    JIMS®Crank Pins
    0
    # sp147884
    Crank Pins by JIMS®. All crank pins are precision manufactured here in Camarillo, California. JIMS start with a special order of steel from an American foundry, then saw, turn, mill, and grind all on numerical controlled machines. From...
    Unique design to meet your tastes and preferencesManufactured to deliver incredible quality
    $105.80 - $113.04
  • ProX® - Complete Crankshaft
    ProX®Complete Crankshaft
    0
    # sp182409
    Complete Crankshaft 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...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $224.89 - $339.70
  • ProX® - Crankshaft Seal Kit
    ProX®Crankshaft Seal Kit
    0
    # sp182411
    Crankshaft Seal 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...
    Carefully developed for the highest level of qualityReady to serve reliably for years to come
    $11.39 - $28.36
  • S&S Cycle® - 106" Stock Bore Stroker Kit
    S&S Cycle®106" Stock Bore Stroker Kit
    0
    # sp175230
    106" Stock Bore Stroker Kit by S&S Cycle®. Vast improvement over stock flywheels, which shift out of true under heavy loads. Heat-treated 4140 material is 114% stronger than stock, eliminates thrust washer. Larger 1.671" crankpin,...
    Made in USAPrecise engineering ensures the latest in quality
    $1,685.95 - $1,711.95
  • S&S Cycle® - 3-Piece Flywheel Assembly
    S&S Cycle®3-Piece Flywheel Assembly
    0
    # sp175235
    3-Piece Flywheel Assembly 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...
    Made in USAPrecise engineering ensures the latest in quality
    $1,658.95 - $1,685.95
  • S&S Cycle® - Crank Pin Assembly
    S&S Cycle®Crank Pin Assembly
    0
    # sp197073
    Crank Pin Assembly 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...
    Made in USAPrecise engineering ensures the latest in quality
    $156.95
  • S&S Cycle® - Flywheel Assembly
    S&S Cycle®Flywheel Assembly
    0
    # sp156563
    Flywheel Assembly 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...
    Made in USAPrecise engineering ensures the latest in quality
    $1,497.95 - $1,818.95
  • S&S Cycle® - Pinion Gear
    S&S Cycle®Pinion Gear
    0
    # sp175274
    Pinion Gear by S&S Cycle®. High-quality gears precision-machined, heat-treated and finish ground to different sizes for optimum gear lash. This top-grade product is expertly made in compliance with stringent industry standards to offer...
    Each size is color-coded to match a stock equivalent gearGears from the middle of the range are recommended for building from scratch
    $106.95 - $241.95
  • S&S Cycle® - Pinion Gear for Gear Drive
    S&S Cycle®Pinion Gear for Gear Drive
    0
    # sp175275
    Pinion Gear for Gear Drive by S&S Cycle®. High-quality gears precision-machined, heat-treated and finish ground to different sizes for optimum gear lash. This top-grade product is expertly made in compliance with stringent industry...
    Precise engineering ensures the latest in qualityExpertly manufactured from highly reliable materials
    $126.95
  • S&S Cycle® - Pinion Shaft Assembly
    S&S Cycle®Pinion Shaft Assembly
    0
    # sp156631
    Pinion Shaft Assembly 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...
    Made in USAPrecise engineering ensures the latest in quality
    $176.95
  • S&S Cycle® - Sprocket Shaft Assembly
    S&S Cycle®Sprocket Shaft Assembly
    0
    # sp156525
    Sprocket Shaft Assembly 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...
    Includes motor sprocket nutFits S&S® or stock flywheels
    $149.95 - $176.95
  • Eastern Performance® - Engine Woodruff Keys
    Eastern Performance®Engine Woodruff Keys
    0
    # sp197078
    Engine Woodruff Keys by Eastern Performance®. Eastern Performance® has a huge selection of the best motorcycle parts & accessories for your Harley Davidson Touring, Softail, Dyna, Sportster, and V-Rod models. With over 20 years...
    Crafted with precision using leading innovationsDesigned specifically for Harley-Davidson motorcycles
    $11.38 - $26.58
  • Wiseco® - Bottom End Crank Kit
    Wiseco®Bottom End Crank Kit
    0
    # sp230053
    Bottom End Crank Kit 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 industry-leading...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $308.38 - $652.21
  • Wiseco® - Complete Bottom End Rebuild Kit
    Wiseco®Complete Bottom End Rebuild Kit (WPC175)
    0
    # mpn4670404760
    Complete Bottom End Rebuild Kit by Wiseco®. Multi-cylinder applications come complete with main bearings (unless specified otherwise). Pre-assembled and precision trued to OEM specifications. Ready for installation. Every Wiseco...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $573.76
  • Wiseco® - Crankshaft Assembly
    Wiseco®Crankshaft Assembly (WPC123)
    0
    # mpn4664280510
    Crankshaft Assembly by Wiseco®. Multi-cylinder applications come complete with main bearings (unless specified otherwise). Pre-assembled and precision trued to OEM specifications. Ready for installation. Every Wiseco Crankshaft Assembly...
    Crafted to deliver unbeatable levels of qualityHigh grade materials for exceptional performance
    $261.28
  • Hot Rods® - Bottom End Kit
    Hot Rods®Bottom End Kit (CBK0231)
    0
    # mpn4713522497
    Bottom End Kit (CBK0231) by Hot Rods®. 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...
    Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality
    $510.36
  • Hot Rods® - Bottom End Kit
    Hot Rods®Bottom End Kit (CBK0225)
    0
    # mpn4634243209
    Bottom End Kit by Hot Rods®. Bolt in and go. 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...
    Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality
    $580.76
  • Hot Rods® - Bottom End Kit
    Hot Rods®Bottom End Kit (CBK0222)
    0
    # mpn4634243208
    Bottom End Kit by Hot Rods®. 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...
    Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality
    $492.76




The crankshaft is the mechanical part of your motorcycle engine that is responsible for its proper operation. The purpose of the crankshaft is to convert the linear movements of pistons into rotational motion, which is then transferred to the wheels. The pistons are attached to the crankshaft with the help of offset shafts. When the pistons move up and down, they push the offset shaft, which in turn leads to crankshaft rotation. One end of the crankshaft is attached to the camshaft by means of a belt or chain, while the other end is connected to the flywheel, which reduces the pulsation characteristic of the four-stroke cycle and thus regulates the power coming out of the engine.

The crankshaft spins at a very high speed. To rotate freely yet to be properly secured in the engine block and reduce vibration, it comes with a bearing on each end. Bearings allow the crankshaft to rotate at high revs while staying firmly attached. Crankshaft bearings also help reduce friction between the rotating crankshaft and stationary engine block and thus sustain a lot of damage. Plus, they are mainly made from copper and lead compounds which are more fragile than the materials used to manufacture the engine block and the crankshaft, so the bearings may wear out prematurely and need an urgent replacement.

You can upgrade your bike’s exhaust, fuel or air intake system but to squeeze maximum performance out of your iron horse, you should retrofit its engine. One of the most effective ways to do that is to install a high-performance crankshaft. Such crankshafts are made from lighter yet no less durable materials and demand less power to spin. Designed with precise engineering using advanced technologies and sophisticated equipment, they deliver superior operation and feature impeccable quality. Such crankshafts along with all necessary parts and components for their proper installation, including seal kits, bearings, crankshaft pins, and many more, are available on our website.

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