Quad bike main jets

Match the jet series before the size

Use the carburettor make and model together with its parts reference to identify the main jet family. Compare the stated jet style, thread and dimensions where supplied. Keep the full part number, including any prefix, when looking for a replacement.

Choose the quantity you need

Check whether the listing supplies one jet, a pack of the same size or a selection of sizes. If you need a broader selection, compare jet kits. For another type of jet, use pilot jets or return to carburettor jets.

Is the same size number interchangeable between jet brands?

Do not treat a matching number as confirmation. Check the specified jet family and the maker’s replacement reference before changing brand or style; the number alone does not establish the correct fit or calibration.

Can I choose a main jet using only the quad’s model and year?

Use those details to check the vehicle application, but also identify the carburettor actually fitted. A replacement carburettor may need different jets from the original unit.

Which size should I buy for a modified setup?

Use the carburettor or kit manufacturer’s guidance for the particular engine, intake and exhaust setup. This category helps you find a specified jet; it does not select a tuning size from engine capacity alone.

Does Mikuni-style or Keihin-style mean an original-brand jet?

Not necessarily. Read the stated manufacturer and description. Style wording can identify an aftermarket replacement for a named carburettor family, so confirm both the maker and the exact replacement reference.