MIKUNI SMALL ROUND MAIN JETS 4/PK #177.5 - 134-21775

The Mikuni Small Round Main Jets #177.5 are carburetor fuel jets built to the N102/221 High Speed Jet specification for the Mikuni Super BN series, making the Mikuni #177.5 small round main jets Super BN 4-pack the right call for any rider dialing in fuel delivery on a Super BN carbureted machine. That #177.5 sizing gives you a precise starting point when you're tuning for elevation changes, temperature swings, or a new intake setup. Getting your air-fuel ratio sharp at the correct jet size feels crisp compared to chasing a rough idle or flat throttle response with guesswork. Buying four jets at once means you won't be stuck mid-tune when you need to step sizes.

• Fits Mikuni Super BN series carburetors for a direct no-fuss installation.
• Delivers consistent fuel flow at the #177.5 jet size for repeatable tuning results.
• Built to Mikuni N102/221 High Speed Jet spec so flow rates match factory standards.
• Keeps your carburetor fuel jetting powersports 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 Small Round Main Jets 4-pack today from Dillon Powersports, authorized dealer.