Mikuni Large Round Main Jets #107.5 - 4 Pack for Harley & Indian V-Twin
About Mikuni
Mikuni has supplied carburetors and fuel-system components to the motorcycle industry for decades, and its HSR series remains a common choice for carbureted Evolution and Twin Cam V-twins where a clean, tunable fuel curve matters more than electronics.
Genuine Mikuni large round main jets in #107.5 size are essential for precise carburetor tuning on your V-twin motorcycle. This four-pack provides the critical components needed to control fuel flow at mid-to-high throttle.
Why riders pick this
- Genuine Mikuni OEM part for reliable operation
- Precise #107.5 main jet size for richer tuning
- Designed for large round Mikuni carburetors
- Four-pack for comprehensive tuning and spares
These Mikuni large round main jets are specifically designed to meter fuel accurately through your carburetor's main circuit. The #107.5 jet size offers a richer fuel mixture, often necessary when tuning for significant performance upgrades like high-flow air filters, full exhaust systems, or engine work. With four jets per pack, you'll have the flexibility to fine-tune your carburetor and maintain spares for future adjustments or rebuilds.
Maximum Fuel Control for V-Twin Performance
- Genuine Mikuni OEM part ensures authentic quality and fit
- #107.5 main jet size for rich, powerful fuel delivery
- Large round main jet design compatible with Mikuni carburetors
- Four jets per pack for tuning versatility and spares
Expert Carburetor Tuning for Your Harley or Indian
Accurate jetting is key to unlocking the full potential of your carbureted Harley-Davidson or Indian Motorcycle. The #107.5 main jet is a common choice for riders pushing their V-twin's performance envelope, helping to prevent lean conditions that can lead to power loss. Always consult your carburetor's manual or a trusted tuning guide to determine the precise jet size required for your specific application and riding conditions.
Specifications
- Brand: Mikuni
- Manufacturer Part #: FN100604-107.5
- Jet Size: #107.5
- Quantity: 4 per pack
- Length: 4.5 in
- Width: 2.2 in
- Height: 0.6 in
- Weight: 0.05 lbs
- Country of Origin: Japan
Common questions
What size is this jet?
#107.5 — a main jet size used in mid-to-high throttle tuning on many Harley and Indian carburetors, providing a richer mixture.
How many jets are in a pack?
Four jets per pack — enough for a single carburetor rebuild or a spare set for tuning various conditions.
Is this the correct jet size for my bike?
Jet sizing depends on your engine, altitude, and air intake. Consult your carburetor manual or tuning guide to confirm #107.5 is correct for your application.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Mikuni |
| TYPE | Jets |
| SKU | 134-71075 |
| WEIGHT | 0.05 lb |
