Motorcycle Crankshafts & Components
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- S&S Cycle®106" Stock Bore Stroker Kit106" 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®Pinion Gear for Gear DrivePinion 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
- Eastern Performance®Engine Woodruff KeysEngine 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 KitBottom 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
- Alto®Pinion Shaft Gear Nut (95301)Pinion Shaft Gear Nut by Alto®. 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 qualityDurable construction to serve you for years$10.20
- Andrews Products®Crankshaft Sprocket (216323)Crankshaft Sprocket by Andrews Products®. This gear will change your timing from +4° for more torque, to -4° for less compression and for easier starting. This top-grade product is expertly made in compliance with stringent industry...Made in USAPrecise engineering provides great longevity$68.30
- Athena®Big Bore Crankshaft (068014)Big Bore 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...Designed and manufactured using innovative technologiesMade with maximum safety and reliability in mind$146.66
- Athena®Long Stroke Crankshaft (S410485320001)Long Stroke 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...Designed and manufactured using innovative technologiesMade with maximum safety and reliability in mind$247.46
- Eastern Performance®T-Style Pinion Gear Key (A-11219)T-Style Pinion Gear Key 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 of...Crafted with precision using leading innovationsDesigned specifically for Harley-Davidson motorcycles$14.34
- Hot Rods®Assy Crankshaft (4162)Assy Crankshaft 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...Expertly crafted from premium materialsDesigned to match rigorous quality standards$405.86
- Hot Rods®Bottom End Kit (CBK0231)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 (CBK0225)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 (CBK0222)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
- Hot Rods®Bottom End Kit (CBK0211)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$510.36
- Hot Rods®Bottom End Kit (CBK0210)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$731.16
- Hot Rods®Bottom End Kit (CBK0201)Bottom End Kit (CBK0201) 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...Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality$757.56
- Hot Rods®Bottom End Kit (CBK0200)Bottom End Kit (CBK0200) 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$703.96
- Hot Rods®Bottom End Kit (CBK0198)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$731.16
- Hot Rods®Bottom End Kit (CBK0197)Bottom End Kit (CBK0197) 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...Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality$439.96
- Hot Rods®Bottom End Kit (CBK0190)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$316.76
- Hot Rods®Bottom End Kit (CBK0189)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$659.96
- Hot Rods®Bottom End Kit (CBK0175)Bottom End Kit (CBK0175) 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$475.96
- Hot Rods®Bottom End Kit (CBK0171)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$555.16
- Hot Rods®Bottom End Kit (CBK0161)Bottom End Kit (CBK0161) 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...Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality$457.56
- Hot Rods®Bottom End Kit (CBK0156)Bottom End Kit (CBK0156) 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...Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality$731.16
- Hot Rods®Bottom End Kit (CBK0155)Bottom End Kit (CBK0155) 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...Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality$439.96
- Hot Rods®Bottom End Kit (CBK0154)Bottom End Kit (CBK0154) 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...Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality$580.76
- Hot Rods®Bottom End Kit (CBK0148)Bottom End Kit (CBK0148) 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...Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality$404.46
- Hot Rods®Bottom End Kit (CBK0147)Bottom End Kit (CBK0147) 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...Stringently tested with the highest quality standardsBuilt for long-lasting dependability and unmatched quality$599.16
- Hot Rods®Bottom End Kit (CBK0142)Bottom End Kit (CBK0142) 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$281.56
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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