Mikuni Large Round Main Jets #75 4-Pack - 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.
Achieve optimal fuel delivery at mid and high throttle with this 4-pack of Mikuni Large Round Main Jets in #75 size. These genuine Mikuni jets are essential for tuning your carbureted Harley-Davidson or Indian Motorcycle.
Why riders pick this
- Genuine Mikuni OEM construction for dependable use
- Precise #75 main jet for mid-to-high throttle tuning
- Large round shape ensures proper carburetor fitment
- Convenient 4-pack for extensive tuning options
- Ideal for adjusting fuel mixture after performance upgrades
When you're dialing in your V-twin's performance, precise fuel metering is non-negotiable. This 4-pack of Mikuni Large Round Main Jets, sized #75, provides the critical components needed to fine-tune your carburetor for changes in elevation, air intake, or exhaust systems on your Harley-Davidson or Indian Motorcycle.
Optimized Fuel Delivery
- Genuine Mikuni OEM quality ensures reliable function
- #75 main jet size for adjusting mid-to-high throttle fuel mixture
- Large round body design for direct fitment in compatible Mikuni carbs
- Comes in a 4-pack, allowing for incremental tuning adjustments
Refine Your Carburetor Setup
The main jet plays a significant role in your engine's performance at cruising speeds and under acceleration. A change in jet size can dramatically affect how your V-twin runs, from crisp throttle response to overall power output. This four-pack gives you the flexibility to experiment and find the perfect #75 setting, or to have spares on hand for future adjustments, helping you achieve a smooth and powerful ride.
Specifications
- Brand: Mikuni
- Manufacturer Part #: FN100604-75
- Quantity: 4 per pack
- Jet Size: #75
- Length: 4.4 in
- Width: 2.2 in
- Height: 0.6 in
- Weight: 0.05 lbs
- Country of Origin: Japan
Common questions
What is the purpose of a #75 main jet?
A #75 main jet meters the fuel flow primarily during mid to high throttle openings. It's used to lean out or richen the fuel mixture for optimal engine performance.
Do I use all four jets at once?
No, you install one main jet into your carburetor at a time. The 4-pack provides multiple jets, allowing you to try different sizes or have spares available for future tuning needs.
Will these fit my Harley-Davidson or Indian Motorcycle?
These jets are designed for V-twin motorcycles equipped with Mikuni carburetors that use large round main jets. Please verify your carburetor type before ordering.
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 | 134-7075 |
| WEIGHT | 0.05 lb |
