Mikuni MKA680 Universal JetRef : MK00088A / 1009940

MIKUNI JET MKA680 (Manufacturer part number: 4/042-680) is a replacement jet designed by MIKUNI for carburetion operations. Ideal for motorcyclists who maintain their carburetor, this jet allows for the adjustment of the amount of fuel injected into the main circuit to achieve proper carburetion suited to conditions or mechanical modifications.

• Usage: replaces the main jet in Mikuni carburetors requiring the corresponding size.
• Function: precise calibration of fuel flow to control mixture richness and engine response.
• Benefit for the rider: facilitates adjustments during tuning, exhaust changes, or different altitudes.
• Manufacturer reference: 4/042-680 — ensures traceability and identification of the correct size.

This jet is aimed at experienced DIYers and workshops that perform fine carburetion adjustments. Before installation, check compatibility with your carburetor and maintain a methodical approach: clean disassembly, inspection of the seat, and gradual road testing. If in doubt, have the adjustment checked by a professional to optimize the reliability and safety of your motorcycle.