MIKUNI HEX MAIN JETS 4/PK #420 - 134-8420

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.