MIKUNI Genuine Mikuni N100.604 Main Jets - #155 - 4-Pack N100604-155

Proper jetting is fundamental to carburetor performance—too lean and you'll lose power and risk engine damage, too rich and you'll waste fuel and foul plugs. These genuine Mikuni #155 main jets deliver the precise fuel metering your engine needs across the mid-range and high-rpm load conditions. With four jets in a single pack, you'll have spares on hand for testing, tuning, or rebuilding multiple carburetors.

Mikuni's OEM-quality construction ensures consistent spray patterns and fuel atomization, critical for reliable jetting across varying altitudes and ambient conditions. Whether you're fine-tuning a stock carburetor or dialing in a modified fuel system, these jets are engineered to maintain the exacting standards professional racers and serious enthusiasts demand.

• Genuine Mikuni manufacture
• Size: #155 main jet
• Quantity: 4-pack
• Made in Japan
• Fits VM16 carburetors
• Fits HS40 carburetors
• Fits HSR42/45/48 carburetors
• Fits RS carburetors
• Fits TM carburetors
• Fits VM29/33 smoothbores
• OEM fitment only (stock Mikuni equipped)
• Direct bolt-in replacement