Carburetor Parts
About Carburetor Parts
Carburetor parts keep a carbureted bike mixing air and fuel correctly. Riders buy repair kits when a bike runs poorly or leaks fuel after sitting, jets when they retune for a new exhaust, filter or altitude, and small parts like screws, valves and slides to restore a worn carburetor.
Listings include main and pilot jets in Mikuni and Keihin styles, sold in packs by jet number, plus carburetor repair kits for Honda and Yamaha, jet kits, air cut-off valve sets, a pilot mixture screw and a Keihin CV recalibration tuner kit. Identify your carburetor's make and model first, since jet styles and numbering differ between makers, and match the repair kit to your engine. Changing jets changes the mixture, so start from the maker's baseline settings and change one thing at a time.
Brands here include Athena, EBC, Dynojet, All Balls and Moose Offroad. Complete units are in Carburetors. Nearby parts include Fuel Filters, Fuel Petcocks & Taps and Air Filters. Pick your bike in the Ride Finder at the top of the page.
FAQs on carburetor parts
What is the difference between a pilot jet and a main jet?
The pilot jet, also called the slow jet, controls the fuel at idle and low throttle. The main jet controls the fuel at wide-open throttle. Jets are numbered by size, and the numbers differ between makers, so match the style your carburetor uses.
How do I know which jets to use?
Start with the settings in your service manual for your engine. Changes such as a new exhaust or air filter, or a different altitude or temperature, can call for different jets. Change one thing at a time and check how the bike runs.
What is in a carburetor rebuild kit?
It varies, but most kits include gaskets, O-rings and seals, and some add a float needle valve, jets or screws. Read the listing to see exactly which pieces are included, and match the kit to your carburetor and engine.
Why does my carburetor leak fuel?
Common causes are a worn or stuck float needle valve, dirt in the valve, a float set at the wrong level and fuel left to go stale. A rebuild with fresh parts often cures it. Fuel leaks are a fire risk, so fix them before riding.
How should I clean carburetor jets?
Use carburetor cleaner and compressed air, and let them dry. Do not poke jets with wire, which can enlarge the opening and change the fuel flow. If a jet will not clear, replace it with one of the same number.
