Sudco High Speed Keihin Carburetor Main Jet

The Sudco High Speed Keihin Carburetor Main Jet is a replacement carburetor main jet for Keihin carburetors. The main jet meters fuel at mid-to-high throttle openings and wide-open throttle. Replacing it is one of the simplest ways to fine-tune jetting for your motorcycle, ATV, or other powersports engine.

Key Features:

• Replacement main jet (also called a high speed jet) for Keihin carburetors
• Lets you richen or lean the fuel mixture at upper throttle settings by changing jet size
• Useful when jetting for altitude, temperature, exhaust or intake modifications, or other engine changes
• Available in a range of jet sizes so you can dial in your carburetor
• Backed by Sudco, a long-time supplier of Keihin carburetors and jetting parts

Sudco's carburetor tuning guidance advises checking float height and working through the circuits in order. Make main jet changes only after the idle and slow circuits are set correctly. Choose the jet size that matches your carburetor series and tuning needs.