Sport/Street Bike Drivetrain & Transmission Parts
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Drive Chains
Sprockets
Chain & Sprocket Kits
Drive Belts & Pulleys
Clutches
Transmissions & Components
Variators
Axles & Accessories
Chain Guide, Protection & Sliders
Sprocket Guards
Transmission Covers
Chain & Belt Adjusters
Primary Chain & Belt Tensioners
Clutch Lines
Transmission Gaskets, Seals & Bushings
Drivetrain & Transmission Bearings
Drivetrain & Transmission Mounts
Engine & Transmission Custom Covers
Chain Lubes & Cleaners
Transmission Fluids & Oils
Gear Oils
Greases
Drivetrain & Transmission Tools
Featured Brands
- Sunstar®SprocketSprocket by Sunstar®. Constructed from S45C Carbon Steel with exclusive heat treatment for added strength & wear resistance, Sunstar's standard steel replacement sprocket is the most reliable replacement grade sprocket. Demanded by...Strongest and longest lasting steel sprocket on the marketDemanded by OEM's for over 50 years$17.48 - $58.32
- Sunstar®Works Z™ SprocketWorks Z™ Sprocket by Sunstar®. The most unique Off Road sprocket on market, Sunstar's Works Z™ is a stainless steel rear sprocket for most 125cc and up applications. This sprocket is up to 3 times more durable than standard steel...Self-cleaning offset tooth design keeps the drive system free of debris, equating in less drag and increased longevityUp to three times more durable than standard steel sprockets and 6-8 times the durability of aluminum$88.17
- Galfer®Hydraulic Clutch Line KitHydraulic Clutch Line Kit by Galfer®. Aftermarket stainless steel clutch lines may look similar, but they are not the same! Every Galfer stainless steel line is made with only DuPont virgin grade PTFE inner core, 64 strand braid and...Significantly improves response and feel over factory rubber linesLargest performance improvement for your money over any other braking upgrade$50.94 - $51.26
- Baker Drivetrain®High Torque Bearing KitHigh Torque Bearing Kit by Baker Drivetrain®. Kit includes a precision honed bearing and seal. The 34091-85 inner bearing race has been used on Big Twins since 1985. The inner primary bearing rides on this race. By design, this race...Eliminates lateral walking of the mainshaft race, found especially found in high horsepower setupsMade in USA$66.00 - $83.48
- QuadBoss®Individual Wheel BearingIndividual Wheel Bearing by QuadBoss®. High-speed bearings with a triple-lip seal for your ride. High-speed bearings are manufactured to ABEC 3 precision levels. Triple-lip rubber seals keep the grease in and the water and dirt out....Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$2.68
- Mogo®Stator/Chain CoverStator/Chain Cover by Mogo®. 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...Built to provide superior quality and performanceMade with the use of the most innovative technologies$35.99 - $44.99
- Paughco®Inner Primary CoverInner Primary Cover by Paughco®. Custom inner cover replaces the aluminum inner on 65-69 Kickstart models only; the cover is approximately 3/16" deeper than P/N 598104 where it bolts to the case. Custom inner cover to replace aluminum...Designed specifically for your MotorcycleState-of-the-art technology and exquisite workmanship$157.95 - $261.95
- Paughco®Tin Primary CoverUniversal Tin Primary Cover by Paughco®. When it comes to quality, Paughco® knows no compromises. All the products made by this stringent quality control conditions. The latest manufacturing methods coupled with the use of the...Designed specifically for your MotorcycleState-of-the-art technology and exquisite workmanship$149.95 - $197.95
- Accutronix®Battle Axe Style Shift LinkageUniversal Battle Axe Style Shift Linkage by Accutronix®. 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...Designed to provide unrivaled value and maximum reliabilityExpertly crafted from the highest grade materials$116.95 - $133.95
- Accutronix®Flame Style Shift LinkageUniversal Flame Style Shift Linkage by Accutronix®. 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 provide unrivaled value and maximum reliabilityExpertly crafted from the highest grade materials$116.95 - $133.95
- Accutronix®Thorn Style Shift LinkageUniversal Thorn Style Shift Linkage by Accutronix®. 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 provide unrivaled value and maximum reliabilityExpertly crafted from the highest grade materials$116.95 - $133.95
- Accutronix®Tribal Round Style Shift LinkageUniversal Tribal Round Style Shift Linkage by Accutronix®. 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...Designed to provide unrivaled value and maximum reliabilityExpertly crafted from the highest grade materials$116.95 - $150.95
- Accutronix®Warrior Style Shift LinkageUniversal Warrior Style Shift Linkage by Accutronix®. 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 provide unrivaled value and maximum reliabilityExpertly crafted from the highest grade materials$116.95 - $133.95
- All Balls®Differential Bearing and Seal KitDifferential Bearing and Seal Kit by All Balls®. This all in one kit contains all the bearings and seals you need to rebuild a differential. Both convenient and time saving.When it comes to quality, All Balls® knows no compromises. All...Used by pro racing pilots and amateur bikers around the worldBlend of astounding operation and unmatched reliability$126.74 - $163.34
- Colony®Sprocket Shaft NutSprocket Shaft Nut by Colony®. 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 specifically for Harley-Davidson motorcyclesExpected to provide the finest quality and value$6.51 - $12.46
- Comet®Spider KitUniversal Spider Kit by Comet®. SK-Spider Pin, Washer and Button. Comet products are rugged, built to last, and intended to make your life easier. Comet Industries has over fifty years of experience manufacturing quality clutches,...Excellent durability coupled with exceptional performanceMade from top-grade materials to provide wear resistance$102.68 - $110.65
- Eastern Performance®Axle SpacerAxle Spacer by Eastern Performance®. 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...Manufactured from the finest materials to deliver lasting durabilityDesigned to combine maximum functionality with eye-catching design$10.12 - $14.64
- K&L Supply®Neutral SwitchNeutral Switch by K&L Supply®. 1 Piece. Replacement for Stock Switch. Made in Japan. 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...Manufactured from the finest materials to deliver lasting durabilityDesigned to combine maximum functionality with eye-catching design$13.69 - $16.43
- K&S Technologies®Neutral SwitchNeutral Switch by K&S Technologies®. 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 to the highest quality standardsEngineered for your motorcycle racing needs$14.96 - $18.31
- Ride Wright Wheels®Custom Klassic PulleyUniversal Custom Klassic Pulley by Ride Wright Wheels®. Made right here in the USA from carefully curated billet aluminum sources, this Ride wright Klassic style pulley is a favorite for matching with cross-laced spoke wheels and rotors...Best discs for your motorcyclePremium upgrade for your wheels$603.78
- SMP®Neutral Safety SwitchUniversal Neutral Safety Switch by SMP®. 1 Piece. Precision manufactured to stringent specifications to ensure proper function and long life in the toughest of conditions. All switches feature a high carbon steel plunger hardened to 48...Direct O.E.M. replacement type switchesGasket or seal included$13.77 - $29.18
- Graves Motorsports®Sprocket CoverSprocket Cover by Graves Motorsports®. Graves Motorsports BMW S1000rr Sprocket Cover for the 10-14 model BMW. Machined from billet aluminum this S1000 rr sprocket cover from Graves racing department is designed to protect your sprocket...Made with innovations for the latest in qualityPerfect for motorcycle applications$65.55 - $66.45
- Outlaw Racing®Chain GuideChain Guide by Outlaw Racing®. 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 fulfill your motorcycle needsElaborately created with customization in mind$19.94 - $41.79
- Outlaw Racing®Chain RollerChain Roller by Outlaw Racing®. Made from durometer polyurethane with pressed bearings. Lasts much longer than expensive OE rollers. Includes mounting bolt. This top-grade product is expertly made in compliance with stringent industry...Designed as a direct replacement for the OEM designWhere Applicable rollers feature an outer mechanical seal to protect the bearings from dirt and water and include mounting hardware$10.32 - $12.14
- Outlaw Racing®Chain SliderUniversal Chain Slider by Outlaw Racing®. 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...The Outlaw Racing Chain Sliders are the perfect solution to protect your motorcycle's swingarm from chain wearMeet or exceed OEM specifications and have greater wear resistance and increased lifespan over stock$19.94 - $32.94
- R&G Racing®Chain GuardChain Guard by R&G Racing®. Easy to install this Chain Guard extension fills the gap between the OEM chain guard the swingarm pivot point. Ensuring the chain is fully protected. Made from aluminium, this chain guard is easy to install...Built to offer excellent functionality and qualityMade with the use of the most innovative technologies$60.99 - $82.99
- R&G Racing®Toe Chain GuardToe Chain Guard by R&G Racing®. Color: Black. R&G Racing's new, road-racing inspired toe guard. Made from aluminium for a lightweight and strong product it features pre-drilled holes attaching to the existing mounts on the...Built to offer excellent functionality and qualityMade with the use of the most innovative technologies$52.99 - $55.99
- TM Designworks®Composite Wear Pad KitComposite Wear Pad Kit by TM Designworks®. 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...Built to match your exact requirementsHigh quality you can rely on$27.95 - $32.95
- Baker Drivetrain®Fine Tooth Adjustment KitUniversal Fine Tooth Adjustment Kit by Baker Drivetrain®. The BAKER primary chain adjuster bracket looks like the stock 39990-01 style bracket but has 28% more adjuster teeth. The finer pitch teeth make it easier to dial in your primary...28% more adjuster teethEasier to dial in your primary chain slack$149.00 - $165.64
- Bolt MC Hardware®Double Locked Hub SaversUniversal Double Locked Hub Savers by Bolt MC Hardware®. This kit includes six class 10.9 zinc plated steel sprocket bolts with factory style class 10.9 Fuji metal-locking nuts and washers. Each sprocket bolt has medium strength...Designed specifically for the powersports industryWill snugly fit your motorcycle and solve all your fastening needs$10.79
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.