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
- 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®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
- 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$83.07 - $98.79
- Arlen Ness®10-Gauge Cam Cover10-Gauge Cam Cover by Arlen Ness®. 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...Machined from 6061 T-6 forged aluminumReplaces OEM die-cast cam cover$299.95 - $329.95
- Arlen Ness®10-Gauge Derby Cover10-Gauge Derby Cover by Arlen Ness®. 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...Machined from 6061-T6 billet aluminumChrome hardware included and gasket$159.95 - $169.95
- Arlen Ness®10-Gauge Lifter Block Covers10-Gauge Lifter Block Covers by Arlen Ness®. 1 Pair. 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...Machined from 6061-T6 billet aluminumReplaces cast OEM lifter block cover$199.95 - $249.95
- Arlen Ness®10-Gauge Point Cover10-Gauge Point Cover by Arlen Ness®. 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...Machined from 6061-T6 billet aluminumEach cover includes chrome hardware$59.95 - $69.95
- Arlen Ness®10-Gauge Pushrod Covers10-Gauge Pushrod Covers by Arlen Ness®. 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...Machined from 6061 T-6 billet aluminumLower tubes allow easy access for adjustable pushrods$229.95
- Arlen Ness®10-Gauge Rocker Box Top Covers10-Gauge Rocker Box Top Covers by Arlen Ness®. 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...Carved from 6061 T-6 forged billet aluminumDrastically changes the look of your engine$549.95 - $699.95
- Arlen Ness®10-Gauge Transmission Top Cover10-Gauge Transmission Top Cover by Arlen Ness®. 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...Machined from billet aluminumReplaces OEM cast cover$179.95 - $209.95
- Arlen Ness®Deep Cut Pushrod CoversDeep Cut Pushrod Covers by Arlen Ness®. Deep Cut Black Pushrod Covers by Arlen Ness®, 4 Pieces. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and...Machined from 6061 T-6 billet aluminumLower tubes allow easy access for adjustable pushrods$199.95
- Arlen Ness®Finned Cam CoverFinned Cam Cover by Arlen Ness®. 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...CNC machined from billet aluminum3D sculpted design matches the finned rocker box's on 111" Thunderstroke™ engines$179.96
- 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$22.63 - $34.34
- Performance Machine®Drive Derby CoverDrive Derby Cover by Performance Machine®. PM's Contrast Cut finish starts out with a high quality, exceptionally smooth anodized surface, the result of an intensive polish preparation. Once anodized, Performance Machine take it one...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$181.95 - $193.95
- Performance Machine®Fluted Clutch CoverFluted Clutch Cover by Performance Machine®. The PM Clutch Slave is perfectly matched to Performance Machine Contour Master Cylinder for optimal clutch action. Show Chrome is what you get with every PM chrome product. Performance...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$405.95
- Performance Machine®Formula Clutch CoverFormula Clutch Cover by Performance Machine®. PM's starts out with a high quality, exceptionally smooth anodized surface, the result of an intensive polish preparation. Once anodized, Performance Machine take it one step further to...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$346.95
- Performance Machine®Scallop Clutch CoverScallop Clutch Cover by Performance Machine®. The Performance Machine Scallop Cover Line was created to replace those uninspiring H-D stock covers that are often overlooked, but present the perfect opportunity to add a custom hot rod...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$346.95 - $405.95
- Performance Machine®Scallop Derby CoverScallop Derby Cover by Performance Machine®. PM's Contrast Cut finish starts out with a high quality, exceptionally smooth anodized surface, the result of an intensive polish preparation. Once anodized, Performance Machine take it one...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$181.95 - $217.95
- Performance Machine®Smooth Clutch CoverSmooth Clutch Cover by Performance Machine®. The PM Clutch Slave is perfectly matched to Performance Machine Contour Master Cylinder for optimal clutch action. PM's Contrast Cut finish starts out with a high quality, exceptionally...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$405.95
- Performance Machine®Vision Series Cable Clutch CoversUniversal Vision Series Cable Clutch Covers by Performance Machine®. The Performance Machine Vision Series Cable Clutch Covers give you the power to view what goes on inside the heart of your bike's transmission. The UV and abrasion...Aluminum lens bezel eliminates crackingUV, abrasion, hazing, and yellowing resistant polycarbonate lens$398.95
- Performance Machine®Vision Series Cam CoversUniversal Vision Series Cam Covers by Performance Machine®. The Performance Machine Vision Series Cam Covers give you the power to view what goes on inside the heart of your bike's cam chest. The UV and abrasion-resistant polycarbonate...Aluminum lens bezel eliminates crackingUV, abrasion, hazing, and yellowing resistant polycarbonate lens$519.95
- Performance Machine®Vision Series Clutch Slave AssemblyUniversal Vision Series Clutch Slave Assembly by Performance Machine®. Compatible with H-D Daymaker bulb. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced...Aluminum lens bezel eliminates crackingUV, abrasion, hazing, and yellowing resistant polycarbonate lens$427.95
- Puig®Engine Protective Cover 2 Caps KitEngine Protective Cover 2 Caps Kit by Puig®. Protect one of the most vulnerable parts of the motorcycle with the PUIG engine cover protector. Made of 4mm polypropylene, ultralight material, this accessory guarantees greater durability...Perfect for motorcycle applicationsMade with innovations for the latest in quality$153.55 - $154.82
- Puig®Engine Protective Cover 3 Caps KitEngine Protective Cover 3 Caps Kit by Puig®. Protect one of the most vulnerable parts of the motorcycle with the PUIG engine cover protector. Made of 4mm polypropylene, ultralight material, this accessory guarantees greater durability...Perfect for motorcycle applicationsMade with innovations for the latest in quality$153.55 - $179.15
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.