MIKUNI 4/PK MAIN JET LRG RND #57.5 - 134-70575

The Mikuni Large Round Main Jets #57.5 are carburetor fuel jets sized at #57.5 and sold as a 4-pack, making the Mikuni large round main jet #57.5 4-pack the right pick for any rider dialing in fuel delivery on a Mikuni-carbureted powersports machine. Large round main jets control the air-fuel mixture at wide-open throttle, and the #57.5 size gives you a precise starting point when you're tuning for elevation changes, temperature swings, or a new intake setup. Getting that crisp throttle response at full pull starts with accurate main jetting, not guesswork. Buying four jets at once means you won't be stuck mid-tune when you need to step up or down a size.

• Delivers consistent fuel flow at the #57.5 jet size for repeatable wide-open throttle tuning.
• Fits Mikuni carburetors spec'd for large round main jets without any modification needed.
• Keeps your carburetor fuel jetting powersports toolkit stocked with four jets per order.
• Built to the large round jet standard so flow rates match what your Mikuni carb expects.
• Designed for tuners who won't settle for a rich or lean condition when a jet swap fixes it.

Order the Mikuni Large Round Main Jets 4-pack today from Dillon Powersports, authorized dealer.