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If you've got an old Suzuki GN400 and it's running a little rough, or you've changed the exhaust and it's lean popping, a jet kit is the answer.

This is from 6 Sigma, and it's a custom stage 1-3 jet kit.
Basically, it comes with a selection of jets so you can dial in your carburetor whether your bike is mostly stock (stage 1), has an aftermarket pipe (stage 2), or is heavily modified (stage 3).
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It's designed specifically for the GN400 (E, F, T, XT models).

The part number is SIG5551, and the best part?

It's made in the USA and comes with a lifetime warranty.

So you can mess around and find the perfect setup without worrying about wearing out the jets.

Good stuff for dialing in that thumper.

4.6 out of 5