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MAIN JET with M5 screw-on fitting, size #135.NOTE: This jet fits the following carburettor types: CB550K3, CB750K0-K8, CB750F1-F2-F3
Keyster company info.
Keyster produces precisionparts for carburettors. Soft parts wear out over the years, causing your motorcycle to run worse. Replacing these parts wil make your bike run better!