Motorcycle Drivetrain & Transmission Parts
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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
- 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®Knurled Transmission DipstickKnurled Transmission Dipstick by Accutronix®. Accutronix has added a Transmission Dipstick to Accutronix line of billet products. These Knurled dipsticks replace the OEM item and really clean up the look of the transmission. Accutronix...Designed to provide unrivaled value and maximum reliabilityExpertly crafted from the highest grade materials$63.95
- 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
- Andrews Products®Transmission Close Ratio Gear SetTransmission Close Ratio Gear Set by Andrews Products®. All speed gears are made from high nickel alloy and heat treated and shot-peened to give maximum durability and strength. Also, where applicable, lead-in ramps have been machined...Precise engineering provides great longevityPeak accuracy and effectiveness$192.78 - $273.89
- Andrews Products®Transmission CountershaftTransmission Countershaft by Andrews Products®. Three types of countershafts fit transmissions through 1985. Countershafts are not interchangeable, take care in ordering. This top-grade product is expertly made in compliance with...Precise engineering provides great longevityPeak accuracy and effectiveness$35.67 - $132.08
- Andrews Products®Transmission Countershaft GearTransmission Countershaft Gear by Andrews Products®. Transmission gears are made from high nickel alloy steel which is heat-treated and shot peened for maximum durability. Shot peening greatly improves the wear resistance of drive edges...Precise engineering provides great longevityPeak accuracy and effectiveness$45.86 - $129.12
- Andrews Products®Transmission GearTransmission Gear by Andrews Products®. All speed gears are made from high nickel alloy and heat treated and shot-peened to give maximum durability and strength. Also, where applicable, lead-in ramps have been machined into most gears...Precise engineering provides great longevityPeak accuracy and effectiveness$79.57 - $711.66
- Andrews Products®Transmission Main Belt Drive GearTransmission Main Belt Drive Gear by Andrews Products®. Transmission gears are made from high nickel alloy steel which is heat-treated and shot peened for maximum durability. Shot peening greatly improves the wear resistance of drive...Precise engineering provides great longevityPeak accuracy and effectiveness$50.27 - $217.98
- Andrews Products®Transmission MainshaftTransmission Mainshaft by Andrews Products®. Made of aircraft alloy steel. Heat-treated and finish ground to ensure maximum durability. Replacement mainshafts for all versions of Big Twin boxes. Made of aircraft alloy steel....Precise engineering provides great longevityPeak accuracy and effectiveness$226.38 - $266.48
- Andrews Products®Transmission Mainshaft GearTransmission Mainshaft Gear by Andrews Products®. Transmission gears are made from high nickel alloy steel which is heat-treated and shot peened for maximum durability. Shot peening greatly improves the wear resistance of drive edges...Precise engineering provides great longevityPeak accuracy and effectiveness$84.01 - $124.53
- Andrews Products®Transmission Shift ForkTransmission Shift Fork by Andrews Products®. A must for all transmission rebuilds. 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...Precise engineering provides great longevityPeak accuracy and effectiveness$18.97
- Baker Drivetrain®6-Into-4 Transmission6-Into-4 Transmission by Baker Drivetrain®. Made to satisfy the old school tendencies while providing the ability to run reasonable RPM's at highway speeds. Panhead and Shovelhead riders will love the ability to ride hard with their...OD6-based transmission insideSmooth out the rattle on the highway$3,795.00
- Baker Drivetrain®Anti-Overshift Ratchet PawlAnti-Overshift Ratchet Pawl by Baker Drivetrain®. The stock ratchet pawl used from 1980 to 2000 utilized scissor spring that was well known for breaking. The unfortunate side effect of this failure is the broken spring leg going...Made to offer outstanding performancePerfect for both professionals and enthusiasts$249.94
- Baker Drivetrain®DD6 6-Speed Direct Drive Transmission Builders KitDD6 6-Speed Direct Drive Transmission Builders Kit by Baker Drivetrain®. Anti-overshift ratchet pawl and Longer primary chain included. From an engineering standpoint, it is difficult to design a machine or mechanism that achieves...Billet 6061-T6 bearing door1/8" thick bearing retainer plate$2,652.41 - $2,895.00
- Baker Drivetrain®DD7 7-Speed Direct Drive Builders KitDD7 7-Speed Direct Drive Builders Kit by Baker Drivetrain®. Included BAKER Direct Drive 7 Speed Stock Side Cover emblem. The DD7 upgrades any existing 2006-later big twin 6 speed to a full 7 speed transmission. The BAKER DD7 is more...Shorter first gear ratio to help with the off the light get up and go, as well as slow speed maneuvering around the bar parking lotFully assembled gear set and shift system. No adjustments needed for installation$3,102.76 - $3,695.00
- Baker Drivetrain®Function-Formed Hydraulic Side CoverFunction-Formed Hydraulic Side Cover by Baker Drivetrain®. The Hydraulic Side Covers was one of the first parts in the FF product line. Baker took away all the 'fat' of the standard aftermarket side cover and left the function. The...Forged 6061 Side Covers tuck tighter to the transmission than the stock cable style side coversCompact and versatile hydraulic line routing enabling the banjo fitting to be on the front or rear of the transmission$362.00
- Baker Drivetrain®Roller 5-Speed Shift KitRoller 5-Speed Shift Kit by Baker Drivetrain®. The design principles that made Baker Six-Speed Overdrive shift so smooth were applied to create a shift drum/pillow block kit that will bolt on to any 5-speed and give super smooth and...Made to offer outstanding performancePerfect for both professionals and enthusiasts$265.00
- Baker Drivetrain®Speedo Hole PlugSpeedo Hole Plug by Baker Drivetrain®. If you need to cap off the speedo sensor hole for whatever reason, you need this plug. Some other companies do this with a steel plate and a gasket, just like old 4-speeds. Ever seen a 4-speed with...6061-T6 AluminumLow-profile top$27.00 - $31.00
- Baker Drivetrain®Transmission DipstickTransmission Dipstick by Baker Drivetrain®. Have you ever heard of a 5-speed transmission dipstick breaking off and working its way into the gearbox with disastrous results? Ask any seasoned technician; he's seen one. The low frequency...Made of billet aluminum and show chrome-platedLargest radius possible between the stalk and the head$29.00 - $40.81
- Baker Drivetrain®Transmission Rebuild KitTransmission Rebuild Kit by Baker Drivetrain®. Includes bearings, snap rings, gaskets, seals and retaining nuts. An all inclusive kit designed to freshen up those high mileage bikes. This kit was put together to assist you with that...Made to offer outstanding performancePerfect for both professionals and enthusiasts$379.00
- Colony®Transmission Mainshaft LocknutTransmission Mainshaft Locknut 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...Precise manufacturing and high-grade materialsExpertly crafted from the highest grade materials$13.75 - $18.18
- Colony®Transmission Mount KitTransmission Mount Kit by Colony®. Includes bolts and washers necessary for installation. 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...Made from the highest quality materialsMade in USA$35.69 - $43.70
- Colony®Transmission PlugTransmission Plug by Colony®. 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 quality at an...Made in USADesigned specifically for Harley-Davidson motorcycles$12.12 - $19.45
- Compu-Fire®8620 Hardened Steel Gear Set8620 Hardened Steel Gear Set by Compu-Fire®. 10/84 Gear Set made with 8620 Hardened Steel. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high...Wicked style meets astounding performanceExcellent upgrade for die-hard performance fans$194.80
- Eastern Performance®Main Drive Gear SpacerMain Drive Gear Spacer by Eastern Performance®. Precision spacers used between main drive gear and sprocket for belt drive Sportsters and Big Twin transmissions. Manufactured from high quality alloy steel, hardened and ground....Crafted with precision using leading innovationsDesigned specifically for Harley-Davidson motorcycles$14.64 - $32.46
- Eastern Performance®Shifter Finger RollersShifter Finger Rollers 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...Rollers for shifter fingersReplaces OEM 34168-39$17.69
- JIMS®4-Speed Transmission Rebuild Kit4-Speed Transmission Rebuild Kit by JIMS®. Use JIMS® proven transmission parts to start with, then top it off with a JIMS® Gasket set, together in one convenient package. This is a big time saver.Made in USABuilt to match your exact requirements$234.32 - $337.82
- JIMS®Countershaft Gear BushingCountershaft Gear Bushing by JIMS®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.Unique design to meet your tastes and preferencesManufactured to deliver incredible quality$28.04 - $28.35
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.