These main jets fit the stock Mikuni carburetor on Royal Enfield Bullet motorcycles using the Iron Barrel engine. In the Mikuni numbering system, the larger the jet number, the larger the jet size. Bullet 500 models come stock with a 110 main jet. Bullet 350 models come with a 90 main jet.
|Compatibility Notes||For use on Royal Enfield motorcycles with the Traditional Engine. Check local regulatory requirements before modifying your motorcycle.|
|Models||Iron Barrel 500cc 5-Speed, Sixty-5, Iron Barrel 500cc with Electric Start, Iron Barrel 500cc 4-Speed through 2001, Iron Barrel 350cc|