Mikuni Large Round Main Jets - 4/PK #130

Genuine Mikuni large round main jets in size #130, sold in a 4-pack for carburetor tuning on V-twin motorcycles. These jets meter fuel flow at cruise and part-throttle conditions to dial in the right air-fuel ratio for your engine.

Features

• Size #130 main jet
• 4-pack quantity
• Genuine Mikuni OEM part
• Large round body design

Specifications

• Brand: Mikuni
• Manufacturer Part #: FN100604-130
• Jet Size: #130
• Quantity: 4 per pack
• Length: 4.4 in
• Width: 2.2 in
• Height: 0.6 in
• Weight: 0.05 lbs
• Country of Origin: Japan

Fitment

Fits V-twin motorcycles equipped with Mikuni carburetors using large round main jet bodies.

Frequently Asked Questions

What does a main jet do?

The main jet controls fuel flow at cruise and part-throttle conditions. Larger numbers = richer mixture; smaller numbers = leaner mixture.

How do I know what size jet I need?

Check your carburetor spec sheet or consult your tuner. Jet size depends on altitude, engine displacement, intake, and exhaust modifications.

Why buy a 4-pack?

Four jets let you keep spares on hand, tune multiple carbs, or experiment with sizing without ordering repeatedly.

Will these work on any Mikuni carb?

These are for Mikuni carbs with large round main jet bodies. Check your carb's jet pocket size before ordering — Mikuni makes multiple styles.