Jet Mikuni Pilot #45 (4/Pkt) VM22 Series

The Mikuni VM22 Series Pilot Jet #45 is a direct-replacement slow jet for Mikuni VM-type slide carburettors, sold in a convenient pack of four. Pilot jets govern fuel delivery at idle and low-throttle positions, making the correct jet size essential for smooth, consistent carburetor tuning.

Sold in a pack of four, these jets suit workshop use, competitive preparation, or keeping spares on hand when dialling in jetting for different riding conditions or altitudes. The #45 designation indicates the jet orifice size within the VM22 range.

• Pilot (slow) jet for Mikuni VM22 series slide carburettors
• Jet size #45 for low-throttle and idle fuel circuit tuning
• Pack of 4 jets — ideal for workshop stock or jetting experiments
• Direct OEM-specification replacement fit for compatible VM-type carburettors
• Brass construction for corrosion resistance and long service life

• 4x Mikuni VM22 Series Pilot Jet #45

Install and remove pilot jets using a proper flat-blade jet screwdriver that fully seats in the slot — an ill-fitting tool can damage the brass head and make future removal difficult.
Never use wire, drill bits, or abrasives to clear a blocked orifice; compressed air and carburetor-safe solvent are the only safe cleaning methods.
When cleaning, spray carburetor cleaner through the jet and blow through with compressed air until the orifice is unobstructed and the jet passes light cleanly.
Inspect threads on both the jet and the carburettor body before installation; cross-threading brass jets into an aluminium carb body is a common and costly mistake.
Tighten finger-tight then snug only — pilot jets require minimal torque and overtightening will strip the soft brass thread.
Change jet size incrementally (typically in steps of 2.5 to 5) when tuning for altitude, temperature, or air-filter changes; keep removed jets labelled and stored dry for future reference.
Store spare jets in a sealed container away from moisture to prevent oxidation of the brass and orifice.
Replace any jet that shows a deformed orifice, stripped thread, or impact damage — a damaged jet cannot deliver accurate fuelling regardless of nominal size.