Mikuni Large Round Main Jets - 4/PK #152.5

Mikuni large round main jets sized at #152.5, sold in a 4-pack for carburetor tuning on V-twin motorcycles. These genuine Mikuni jets meter fuel flow to the engine and are essential for proper carburetor calibration on Harley and Indian bikes.

Features

• 4-pack quantity
• Genuine Mikuni OEM jets
• Large round design
• #152.5 size

Specifications

• Brand: Mikuni
• Manufacturer Part #: FN100604-152.5
• 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 with Mikuni carburetors, including Harley-Davidson and Indian Motorcycle models.

Frequently Asked Questions

What size jet do I need for my carb?

Jet size depends on your bike's engine displacement, altitude, and fuel type. Consult your Mikuni carb manual or a tuning guide for the correct size.

Why are these sold in 4-packs?

Four jets allow you to keep spares on hand or tune multiple carburetors without reordering.

How do I know if I need a different jet size?

If your engine runs too lean (sluggish) or too rich (fouled plugs), a larger or smaller jet may be needed. Dyno tuning or carburetor kits often specify the correct size.

Are these genuine Mikuni?

Yes — these are genuine OEM Mikuni jets manufactured in Japan.