Keihin 128 Universal JetRef : IH00184A / 1106242

KEIHIN Jet 128 (manufacturer part number: 99101-393-1280) — a part intended for carburetion adjustments on Keihin carburetors. This jet is numbered 128 and is used to calibrate the fuel flow in the main circuit to adjust the air/fuel mixture according to the engine's needs.

• Usage: replacement or adjustment of the jet on Keihin carburetor.
• Function: adjusts the amount of fuel injected to modify the richness (to avoid too lean or too rich mixtures).
• Suitable for riders who engage in tuning, maintenance, or fine adjustments of carburetion.

Easy to install for a DIY enthusiast familiar with carburetors: disassemble the float bowl, replace the jet while ensuring to clean the seat and passages, then check the engine behavior at idle and during acceleration. For precise adjustments (high RPM, acceleration peak), it is recommended to try several jets and conduct tests on the road or on a bench in safe conditions.

Manufacturer reference and brand visible on the label: KEIHIN — keep this part on hand for the maintenance and tuning of your motorcycle. If in doubt about compatibility, consult the carburetor documentation or a specialized workshop.