Cruiser Bike Drivetrain & Transmission Parts
- Drive Chains
- Sprockets
- Drive Belts & Pulleys
- Primary Chains & Belts
- Clutches
- Transmissions & Components
- Variators
- Axles & Accessories
- Chain Guide, Protection & Sliders
- 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® - Kool Kaps Gloss Black Engine Bolt Covers (2452)Kool Kaps Gloss Black Engine Bolt Covers (2452) 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$71.99
- Kuryakyn® - Kool Kaps Satin Black Bolt Covers (2471)Kool Kaps Satin Black Bolt Covers (2471) 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$66.99
- Kuryakyn® - Peaked Chrome Rocker Box Bolt Covers (8372)Peaked Chrome Rocker Box Bolt Covers (8372) by Kuryakyn®, 4 Pieces. 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...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$36.99
- Kuryakyn® - Precision™ Chrome Coil Cover (6466)Precision™ Chrome Coil Cover (6466) by Kuryakyn®. Rather than sticking out like a sore thumb, give the coil and plug wires an entirely new, custom look with this trick cover designed to match the entire Kuryakyn Precision line for...Features a sculpted design with raised fins that provide depthCovers the coil and plugs for a clean custom look$72.99
- Kuryakyn® - Precision™ Chrome Transmission Shroud (6456)Precision™ Chrome Aluminum Transmission Shroud (6456) by Kuryakyn®. Cover the wrinkle black outer transmission on Milwaukee-Eight™powerplants with a single-piece, bolt-on design cast from quality aluminum and form-fitted to...Die-cast aluminum construction offered in chrome or gloss black finishEasy to install, though may require removal and reinstallation of the rear exhaust heat shield$111.14
- Kuryakyn® - Precision™ Gloss Black Coil Cover (6467)Precision™ Gloss Black Coil Cover (6467) by Kuryakyn®. Rather than sticking out like a sore thumb, give the coil and plug wires an entirely new, custom look with this trick cover designed to match the entire Kuryakyn Precision line...Features a sculpted design with raised fins that provide depthCovers the coil and plugs for a clean custom look$72.99
- Kuryakyn® - Precision™ Gloss Black Cylinder Base Cover (6453)Precision™ Gloss Black Cylinder Base Cover (6453) by Kuryakyn®. The wrinkle black engine case at the base of the jugs is begging for some attention. And the Precision Cylinder Base Cover delivers. Form-fitted to hug the contours of...Durable die-cast aluminum construction offered in chrome or gloss black finishesEasy bolt-on installation$77.89
- Kuryakyn® - Precision™ Gloss Black Oil Line Cover (6461)Precision™ Gloss Black Oil Line Cover (6461) by Kuryakyn®. This bolt-on cover adds a polished, sculpted appearance while concealing the oil lines in the area between the cam cover and side of the transmission cover. Looks great in...Made from quality aluminumFeatures a bolt-on design for seamless integration with factory components$70.29
- Kuryakyn® - Precision™ Gloss Black Transmission Shroud (6457)Precision™ Gloss Black Aluminum Transmission Shroud (6457) by Kuryakyn®. Cover the wrinkle black outer transmission on Milwaukee-Eight™powerplants with a single-piece, bolt-on design cast from quality aluminum and form-fitted to...Die-cast aluminum construction offered in chrome or gloss black finishEasy to install, though may require removal and reinstallation of the rear exhaust heat shield$101.64
- Kuryakyn® - Precision™ Inner Chrome Primary Cover (6450)Precision™ Inner Chrome Primary Cover (6450) by Kuryakyn®. Cover the wrinkle black inner primary with a smooth, contoured design that seamlessly forms to the contours and complements the factory outer cover. Includes hardware for easy...Die-cast aluminum construction with premium chrome or gloss black finishOne-piece design with replacement screws for easy installation$173.99
- Kuryakyn® - Precision™ Inner Gloss Black Primary Cover (6451)Precision™ Inner Gloss Black Primary Cover (6451) by Kuryakyn®. Cover the wrinkle black inner primary with a smooth, contoured design that seamlessly forms to the contours and complements the factory outer cover. Includes hardware for...Die-cast aluminum construction with premium chrome or gloss black finishOne-piece design with replacement screws for easy installation$173.99
- Kuryakyn® - Rear Chrome Oil Panel Accent (5707)Rear Chrome Oil Panel Accent by Kuryakyn®. The Rear Oil Panel Accent for Indian is a classic chrome cover that surrounds the oil filler cap and covers the wrinkle black base of the motor with gleaming chrome.Made from quality die-cast aluminumCan be installed by itself, but is styled for a cohesive look with the addition of the Inner Primary Cover (P/N 5643) or Starter End Cover (P/N 5642), both sold separately$84.99
- Kuryakyn® - Rear Chrome Oil Panel Accent (5644)Rear Chrome Oil Panel Accent by Kuryakyn®. The Rear Oil Panel Accent for Indian is a classic chrome cover that surrounds the oil filler cap and covers the wrinkle black base of the motor with gleaming chrome.Made from quality die-cast aluminumCan be installed by itself, but is styled for a cohesive look with the addition of the Inner Primary Cover (P/N 5643) or Starter End Cover (P/N 5642), both sold separately$89.99
- Kuryakyn® - Scorpion Chrome Spark Plug/Head Bolt Covers (8323)Scorpion Chrome 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...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$60.99
- Kuryakyn® - Scorpion Chrome Spark Plug/Head Bolt Covers (8315)Scorpion Chrome Spark Plug/Head Bolt Covers (8315) 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...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$58.99
- Kuryakyn® - Stiletto™ Chrome Rocker Box Bolt Covers (8144)Stiletto™ Chrome Rocker Box Bolt Covers by Kuryakyn®, 4 Pieces. 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...Thoroughly developed for unbeatable quality and enduring valueMade with experience and proven by quality$50.99
- Performance Machine® - Drive 5-Hole Contrast Cut Platinum Derby Cover (0177-2040-BMP)Drive 5-Hole Contrast Cut Platinum Aluminum Derby Cover (0177-2040-BMP) by Performance Machine®. PM's Contrast Cut finish starts out with a high quality, exceptionally smooth anodized surface, the result of an intensive polish...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$193.95
- Performance Machine® - Fluted Chrome Clutch Cover (0066-2008-CH)Fluted Chrome Clutch Cover (0066-2008-CH) 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...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$405.95
- Performance Machine® - Formula Contrast Cut Clutch Cover (0066-2034-BM)Formula Contrast Cut Aluminum Clutch Cover by Performance Machine®. The FORMULA design was born from the concept of a contemporary, simplistic composition that pays homage to the early lightweight spoke race wheels. Performance Machine...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$346.95
- Performance Machine® - Race Series Cam Cover (0177-2076-SMB)Race Series Cam Cover by Performance Machine®. Finish: Black Ops. Elevate the style and performance of your Harley-Davidson® Milwaukee-Eight® power plant with the Race Series engine covers from Performance Machine. The Race Series...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$296.96
- Performance Machine® - Race Series Rocker Box Covers (0177-2084-SMB)Race Series Rocker Box Covers by Performance Machine®. Finish: Black Ops. Elevate the style and performance of your Harley-Davidson® Milwaukee-Eight® power plant with the Race Series engine covers from Performance Machine. The Race...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$584.96
- Performance Machine® - Scallop 5-Hole Contrast Cut Platinum Derby Cover (0177-2026-BMP)Scallop 5-Hole Contrast Cut Platinum Aluminum Derby Cover (0177-2026-BMP) by Performance Machine®. PM's Contrast Cut finish starts out with a high quality, exceptionally smooth anodized surface, the result of an intensive polish...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$193.95
- Performance Machine® - Scallop Chrome Ignition Cover with 5 Holes (0177-2029-CH)Scallop Chrome Aluminum Ignition Cover with 5 Holes (0177-2029-CH) by Performance Machine®. Show Chrome' is what you get with every PM chrome product. Performance Machine secret is preparation. Performance Machine send each raw part to...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$120.95
- Performance Machine® - Scallop Contrast Cut Clutch Cover (0066-2027-BM)Scallop Contrast Cut Aluminum Clutch Cover (0066-2027-BM) 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...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$346.95
- Performance Machine® - Scallop Contrast Cut Ignition Cover with 5 Holes (0177-2029-BM)Scallop Contrast Cut Aluminum Ignition Cover with 5 Holes (0177-2029-BM) by Performance Machine®. PM's Contrast Cut finish starts out with a high quality, exceptionally smooth anodized surface, the result of an intensive polish...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$120.95
- Performance Machine® - Smooth Chrome Clutch Cover (0066-2000-CH)Smooth Chrome Clutch Cover (0066-2000-CH) 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...Engineered to fulfill your motorcycle needsWill push the limits of high quality and value$405.95
- Performance Machine® - Vision Series Chrome Cam Covers (0177-2082M-CH)Universal Vision Series Chrome Cam Covers (0177-2082M-CH) 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...Aluminum lens bezel eliminates crackingUV, abrasion, hazing, and yellowing resistant polycarbonate lens$519.95
- Roland Sands Design® - Clarity Contrast Cut Derby Cover (0177-2007-BM)Clarity Contrast Cut Aluminum Derby Cover (0177-2007-BM) by Roland Sands Design®. The RSD Clarity Derby Cover is the next best thing to an open primary. Articulately-machined billet aluminum frames transparent polycarbonate, giving you...Direct replacement for your stock derby cover on your O.E.M. primaryCNC-machined from billet aluminum and polycarbonate$278.95
- Roland Sands Design® - Clarity Contrast Cut Timing Cam Cover (0177-2003-BM)Clarity Contrast Cut Timing Cam Cover (0177-2003-BM) by Roland Sands Design®. Set out to expose the heart of the twin cam engine with the RSD Clarity Timing Cover. It's finely machined billet housing and transparent polycarbonate lenses...Allows for viewing of internal engine componentsDirect replacement for your stock Timing/Cam cover$519.95
- Roland Sands Design® - Nostalgia Contrast Cut Derby Cover (0177-2024-BH)Nostalgia Contrast Cut Derby Cover (0177-2024-BH) by Roland Sands Design®. Hardware included. Designed as a direct replacement for your stock derby cover on your O.E.M. primary. Laser-engraved RSD Logo. Covers are hand sanded for a...Design matched to the Nostalgia line of productsEasy bolt-on installation$193.95
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.