Gearbox & Transmission Parts
About Gearbox & Transmission Parts
Gearbox and transmission parts sit between the engine and the wheels and control which gear the machine is in and how power reaches the drivetrain. Owners shop this category when a machine will not shift cleanly, when the shifter feels loose or stuck, when the transmission whines or rumbles, or while rebuilding a gearbox.
The listings split into a few jobs. Shift cables link the shifter to the transmission and are listed by model, including Polaris Ranger, Brutus and Commander/Maverick variants. Shift motors are used on models with powered shifting, such as the Honda Foreman listing. Transmission bearing kits supply the bearings for the gearbox and are listed by model and year for quads such as the Kawasaki Brute Force, Yamaha Warrior and Raptor, and Honda Foreman.
Clutch weights and rollers are here too, sold by weight in grams. Heavier weights generally make a belt-driven clutch shift up at lower engine speed and lighter weights hold higher engine speed, but the right choice depends on the machine, tires and conditions, so change in small steps. Transmission bearings sit inside the case, which usually has to be opened, so read the service manual before taking that job on.
Brands here include Hot Rods, EPI, WSM, Parts Unlimited and All Balls. Pick your machine in the Ride Finder at the top of the page to see parts made for it. Related parts are in Clutch Parts & Kits, Bearings, Gaskets & Seals and Differential Parts, all under Transmission & Drivetrain.
FAQs on UTV and ATV transmission parts
What are the signs of a failing shift cable?
A shift lever that is stiff, loose or hard to move, a gear indicator that does not match the gear selected, and visible fraying, kinks or a binding outer sleeve all point to the cable. Check routing and adjustment first, then replace a cable that is damaged.
Can a stiff shift be fixed by adjusting the cable?
Sometimes. Many shift cables have an adjuster, and the service manual gives the method for your model. If the cable is frayed, kinked or binding inside its sleeve, adjusting will not cure it, and the cable needs replacing.
What does a transmission bearing kit include?
A transmission bearing kit is a set of bearings for the gearbox, listed for a specific model and year. Some kits may include other small parts, so read the listing for exactly what is in the box before you order.
Do I have to split the engine cases to replace transmission bearings?
On many machines, yes, because the bearings sit on shafts inside the gearbox and the cases must be separated to reach them. The job varies by model, so check the service manual to see what is involved, and what special tools are needed, before starting.
How do clutch weight changes affect a UTV or ATV?
In a belt-driven clutch, the weights decide how soon the clutch closes and shifts as engine speed rises. Heavier weights generally shift up sooner at lower engine speed and lighter ones hold more engine speed. The results vary with springs, tires and load, so change one thing at a time.
