Description
The Mikuni Hex Main Jets 420 are carburetor fuel jets sized at 420 and sold as a 4-pack, making the Mikuni hex main jets 420 4-pack carburetor tuning solution the right call for any builder pushing the outermost edge of fuel delivery on a heavily modified Mikuni-carbureted machine. That 420 sizing is one of the largest available in the entire Mikuni hex main jet range, where only the most extreme big-bore builds and radical engine modifications will ever demand that volume of fuel flow. Getting your air-fuel ratio locked in at the correct jet size is crisp compared to chasing a stumbling throttle with guesswork. Buying four jets at once means you won’t be stranded mid-tune when it’s time to step sizes or swap back.
- Delivers consistent fuel flow at the 420 jet size for repeatable tuning results.
- Built to Mikuni hex main jet spec so flow rates match factory carburetor standards.
- Fits Mikuni hex-style carburetors for a direct no-fuss installation.
- Keeps your big-bore carburetor fuel jetting toolkit stocked with four jets per order.
- Designed for riders who won’t accept a rich or lean condition when a jet swap fixes it.
Order the Mikuni Hex Main Jets 420 4-pack today from Dillon Powersports, authorized dealer.
