Mikuni Large Round Main Jets - 4/PK #112.5

Mikuni large round main jets sized #112.5, sold in a 4-pack for carburetor tuning on V-twin motorcycles. Direct OEM Mikuni parts used by Harley-Davidson and Indian Motorcycle riders to dial in fuel delivery.

Features

• 4-pack quantity
• Genuine Mikuni OEM part
• Large round jet design
• For V-twin carburetors

Specifications

• Brand: Mikuni
• Manufacturer Part #: FN100604-112.5
• Jet Size: #112.5
• 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 with Mikuni carburetors, including Harley-Davidson and Indian Motorcycle models.

Frequently Asked Questions

What does a main jet do?

The main jet controls fuel delivery at cruise and mid-range throttle. Larger numbers (#112.5) richen the mixture; smaller numbers lean it out.

How do I know what jet size I need?

Check your carburetor's current jet and your bike's manual. Dyno tuning or plug reads help determine if you need richer or leaner jets.

Why buy a 4-pack?

Four jets let you keep spares on hand and test different sizes without ordering multiple times.

Will these fit my Harley or Indian?

Yes, if your bike runs a Mikuni carburetor. Verify your carb model before ordering — not all V-twins use Mikuni.