Motorcycle Drivetrain & Transmission Parts
- Drive Chains
- Sprockets
- Chain & Sprocket Kits
- Drive Belts & Pulleys
- Primary Chains & Belts
- Clutches
- Transmissions & Components
- Variators
- Driveshaft
- Axles & Accessories
- Wheel Hubs
- Chain Guide, Protection & Sliders
- Sprocket Guards
- Transmission Covers
- Chain & Belt Adjusters
- Primary Chain & Belt Tensioners
- Transmission Sensors & Switches
- Clutch Lines
- Transmission Gaskets, Seals & Bushings
- Drivetrain & Transmission Bearings
- Drivetrain & Transmission Mounts
- Engine & Transmission Custom Covers
- Drive Belt & Drive Shaft Covers
- Chain Lubes & Cleaners
- Transmission Fluids & Oils
- Gear Oils
- Greases
- Drivetrain & Transmission Tools
Featured Brands
- Cometic Gasket®Transmission Bearing End Cover GasketTransmission Bearing End Cover Gasket by Cometic Gasket®. 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 the highest grade materialsPrecise engineering ensures the latest in quality$14.47 - $24.95
- Cometic Gasket®Transmission Main Drive Gear Oil SealTransmission Main Drive Gear Oil Seal by Cometic Gasket®. 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...At Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance for today’s powerful V-Twin engines$6.17 - $10.50
- Cometic Gasket®Transmission Rebuild Gasket KitTransmission Rebuild Gasket Kit by Cometic Gasket®. 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 the highest grade materialsPrecise engineering ensures the latest in quality$36.04 - $78.27
- Cometic Gasket®Transmission Top Cover GasketTransmission Top Cover Gasket by Cometic Gasket®. 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 the highest grade materialsPrecise engineering ensures the latest in quality$9.99 - $22.95
- QuadBoss®Wheel Bearing and Seal KitWheel Bearing and Seal Kit by QuadBoss®. High-speed bearings are manufactured to ABEC-3 precision levels. Triple-lip rubber seals keep the grease in and the water and dirt out.Chevron SRI-2 grease contains rust and oxidation inhibitors (-29° C to 177° C)Double-lip type TC seals with stainless steel garter springs$12.59 - $31.32
- Kuryakyn®Tappet Block AccentTappet Block Accent by Kuryakyn®. Finish off the OEM chrome with this simple to install Tappet Block Accent. The unique design creates a clean custom transition from cylinder head to motor block.Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$86.36 - $98.09
- BikeMaster®Replacement InsertsUniversal Replacement Inserts by BikeMaster®. 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...Designed to fulfill the needs of motorcyclistsState-of-the-art design and peerless quality$9.89 - $13.14
- BikeMaster®Wobble Extension BarsUniversal Wobble Extension Bars by BikeMaster®. Lets you get to places you couldn't before. The BikeMaster® Wobble Extension Bars allows sockets to be driven at up to 15° off vertical. These 4-piece sets are made of hardened chrome...Designed to fulfill the needs of motorcyclistsState-of-the-art design and peerless quality$20.99 - $25.77
- Kuryakyn®Cylinder Base CoverCylinder Base Cover by Kuryakyn®. Beautifully highlight the transition from cylinder to engine case. The perfect complement to Kuryakyn Inner Primary Covers (sold separately).Perfect for motorcycle applicationsMade with innovations for the latest in quality$43.19 - $80.96
- Kuryakyn®Hot Spots™ Custom Chrome End PlugsUniversal Hot Spots™ Custom Chrome End Plugs by Kuryakyn®. Give your Allen head that smooth look and protect from rust damage with Hot Spots Custom End Plugs. This top-grade product is expertly made in compliance with stringent...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$8.09 - $10.79
- Kuryakyn®Kool Kaps Bolt CoversKool Kaps Bolt Covers by Kuryakyn®. Cover those unsightly and unfinished bolt heads for a smooth, finished appearance. Installs easily over the heads of existing bolts.Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$59.39 - $60.26
- Kuryakyn®Kool Kaps Engine Bolt Cover KitKool Kaps Engine Bolt Cover Kit by Kuryakyn®. Cover those unsightly and unfinished bolt heads for a smooth, finished appearance. Installs easily over the heads of existing bolts.Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$59.39 - $64.76
- Kuryakyn®Kool Kaps Engine Bolt CoversUniversal Kool Kaps Engine Bolt Covers by Kuryakyn®, 10 Pieces. Cover those unsightly and unfinished bolt heads for a smooth, finished appearance. Installs easily over the heads of existing bolts.Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$8.09 - $14.36
- Kuryakyn®Kool Kaps Engine Bolt CoversKool Kaps Engine Bolt Covers by Kuryakyn®. , 10 Pieces. Cover those unsightly and unfinished bolt heads for a smooth, finished appearance. Installs easily over the heads of existing bolts.Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$8.09 - $14.36
- Kuryakyn®Peaked Rocker Box Bolt CoversPeaked Rocker Box Bolt Covers by Kuryakyn®. The final touch that makes the difference. Simple push-on installation. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$33.26 - $49.46
- Kuryakyn®Precision™ DipstickPrecision™ Dipstick by Kuryakyn®. This intricately sculpted dipstick is easy to turn like the stock cap, and looks a whole lot better. Swap the black plastic dipstick with a chrome-plated or gloss black aluminum replacement featuring...Durable die-cast aluminum construction with premium chrome plating or gloss black paintEasy to grip for hassle-free opening and tightening$40.49 - $43.19
- Kuryakyn®Precision™ Lower Front Engine CoverPrecision™ Lower Front Engine Cover by Kuryakyn®. Sculpted and defined for a clean appearance by concealing the lower portion of the frame, kickstand assembly, front engine stabilizer, floorboard mount and wiring leading to the...Quality cast aluminum constructionPerfect complement to the Precision Cylinder Base Cover and Precision Inner Primary Cover, both sold separately$73.79 - $82.76
- Kuryakyn®Rear Cylinder Base CoverRear Cylinder Base Cover by Kuryakyn®. One of Kuryakyn most popular dress-up items for Harley-Davidsons! Clean up the black hole behind the rear cylinder. Add Kuryakyn Transmission Shroud and the sparkle will be captivating!.Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$45.86 - $73.79
- Kuryakyn®Regulator CoverRegulator Cover by Kuryakyn®. A stock voltage regulator normally fades into the background, but with this sharp Voltage Regulator Cover, it will be right in the spotlight. Deep fins & beautiful chrome make it really stand out!...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$77.36 - $99.86
- Kuryakyn®Scorpion Spark Plug/Head Bolt CoversScorpion Spark Plug/Head Bolt Covers by Kuryakyn®. Add a classy touch to your engine. Held in position with set screws, ensuring rattle-free performance. This top-grade product is expertly made in compliance with stringent industry...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$53.09 - $54.86
- Kuryakyn®Starter CoverStarter Cover by Kuryakyn®. U.S. Patent D595,191. This one simple cover turns the hodgepodge of the starter solenoid and all of its related wiring into one sculpted, glistening unit. Designed to work with the stock starter end cover and...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$89.96 - $96.26
- Kuryakyn®Throttle Servo Motor CoverThrottle Servo Motor Cover by Kuryakyn®. Great looking remedy to cover that ugly throttle servo motor when using a Screamin' Eagle Stage One, Heavy Breather or any Kuryakyn air cleaner.Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$46.91 - $98.79
- Biker's Choice®Coil CoverCoil Cover by Biker's Choice®. 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 to provide unrivaled value and maximum reliabilityExpertly crafted from the highest grade materials$21.79 - $35.98
- Hammerhead Designs®Oil Filter CoverOil Filter Cover by Hammerhead Designs®. 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...UV anodizing for durabilityLaser etched logo$35.99 - $62.99
- AllStar Performance®Timken Wheel Bearing GreaseTimken Wheel Bearing Grease by AllStar Performance®. High performance Standard or High Temp. Synthetic wheel bearing grease. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...Precise manufacturing and high-grade materialsExceptional performance at a competitive price$6.99 - $25.99
- COMP Cams®Engine Assembly LubeEngine Assembly Lube by COMP Cams®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit...Crafted from the highest grade materialsWill deliver years of reliable service$15.95 - $18.95
- Lubegard®Platinum Universal ATF ProtectantUniversal Platinum Universal ATF Protectant by Lubegard®. 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...Made with the finest materials to offer premium qualityUnique design to help you show off your personal style$17.04 - $33.88
- Lubegard®Platinum Universal ATF ProtectantUniversal Platinum Universal ATF Protectant by Lubegard®. 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...Made with the finest materials to offer premium qualityUnique design to help you show off your personal style$17.04 - $33.88
- Lucas Oil®Chain LubricantUniversal Chain Lubricant by Lucas Oil®. Lucas Chain Lubricant was developed to be a long lasting, all weather, all temperature lubricant and protectant for chains, sprockets, cables and open gears. It is water resistant and contains...Built to match your exact requirementsHigh quality you can rely on$7.43 - $10.49
- Lucas Oil®Chain LubricantUniversal Chain Lubricant by Lucas Oil®. Lucas Chain Lubricant was developed to be a long lasting, all weather, all temperature lubricant and protectant for chains, sprockets, cables and open gears. It is water resistant and contains...Built to match your exact requirementsHigh quality you can rely on$7.43 - $10.49
Motorcycle transmission and drivetrain systems have their own peculiarities. Most bikes are equipped with a manual sequential transmission. Rather compact and lightweight, it perfectly transfers power and typically has five or six gears to shift using a foot lever. Meanwhile, such renowned companies as Honda and Aprilia try to change the game by offering models with a dual-clutch gearbox or a CVT, and they achieved considerable success. However, all the abovementioned systems are quite complex mechanisms that require regular maintenance or even repairs from time to time.
Most manual assemblies are robust enough, but over time, moving parts may start giving you trouble due to friction, corrosion, or mechanical damage. Problems with a lever, shift forks, and other components of the shifting mechanism can be accompanied with a worn-out clutch, gears, and bearings, giving the bike's owner a strong reason to make a total rebuild. In CVTs, belt replacement is arguably the most common procedure; besides the belt itself, a clutch holding/removing tool is needed, and such a job requires certain experience and skills.
When it comes to final drive, engine output can be transferred to the rear wheel in three ways – via the chain, belt, or shaft. The first way is the most widespread; it's efficient and reliable enough, although the chain tends to stretch, and sprockets also gradually wear out. Such a setup needs to be periodically tightened, cleaned, and lubed to last long; fortunately, there are plenty of corresponding tools and chemicals allowing you to easily and effectively remove old dirty grease and protect metal parts from moisture and rust. As for the belt, corrosion is not an issue at all. Considered to be a decent alternative to the chain, the belt needs almost no maintenance and works quieter and smoother.
The very early bikes used leather drive belts that didn't last long. Modern belts are way stronger and use special hydrogenated nitrile rubber (HNBR) mixtures resistant to oil and heat, polyamide fabric for reinforcement, wear-resistant polyethylene coating, and other materials enabling these parts to last almost as long as the bike itself, though you may need to check and adjust the belt's deflection. Meanwhile, chains and sprockets are considered stronger than belts & pulleys and better withstand hard acceleration. Most high-performance and superpowerful motorcycles still use them, along with some custom two-wheelers where chains allow for installing different sprockets to match the output of a modified motor.
As for shaft drive, this mechanism is extremely durable and virtually maintenance-free, under the condition that you regularly change gear oil. While refilling the case, check for the presence of metal shavings in old oil, which can be the first sign of run-down gears. Also, there must be no leaks caused by faulty seals. In terms of performance, approximately 20-25 percent of torque is lost in this kind of drive, and the system is heavier than other setups, so there is no sense to install it in small-displacement and supersport motorcycles in which extra weight is undesirable. We carry quality aftermarket parts, chemicals, and tools for any of the abovementioned systems. While many components are factory-style replacements, others have a custom finish and are used for various upgrades.