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Oct 12, 2021
Great quality for a great price
MIKUNI
SKU: 134-7065
Mikuni Large Round Main Jets #65 4-Pack - Harley & Indian V-Twin
$20.79
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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.
These genuine Mikuni large round main jets, sized #65, are essential for fine-tuning the midrange and cruise fuel delivery on V-twin motorcycles. Sold in a convenient four-pack, they allow riders to precisely adjust their carburetor for optimal performance. Ensure your Harley-Davidson or Indian Motorcycle runs cleanly through the powerband.
Why riders pick this
- Genuine Mikuni for reliable fuel metering
- Size #65 for precise midrange performance
- Four-pack for comprehensive tuning options
- For V-twin motorcycles with Mikuni carburetors
When you're looking to uncork maximum performance from your carbureted V-twin, the main jet is a critical component for controlling fuel delivery at cruising speeds and under acceleration. This four-pack of genuine Mikuni large round main jets, size #65, provides the precise metering needed for riders to dial in their carburetor after installing performance upgrades like an exhaust or air cleaner. Accurate jetting prevents lean conditions, improves throttle response, and ensures consistent power output.
Consistent Midrange Power
- Genuine Mikuni OEM part for trusted quality and exact fitment
- Size #65 large round main jets for accurate midrange tuning
- Four-pack offers flexibility for extensive tuning or spares
- Ideal for V-twin motorcycles with Mikuni carburetors
Achieving Peak V-Twin Performance
Proper main jet selection is foundational for a well-running V-twin, especially for Harley-Davidson and Indian Motorcycle owners who demand optimal performance. This four-pack of #65 Mikuni large round main jets gives you the tools to fine-tune your fuel mixture, whether you're adjusting for altitude, different fuel types, or engine modifications. For a smooth, powerful ride across the entire throttle range, these jets are a crucial component in your carburetor tuning strategy.
Specifications
- Brand: Mikuni
- Manufacturer Part #: FN100604-65
- Quantity: 4 per pack
- Jet Size: #65
- Country of Origin: Japan
Common questions
What role does the main jet play in a carburetor?
The main jet is responsible for metering fuel in the mid-range to wide-open throttle positions. Adjusting its size allows you to optimize the air-fuel ratio for peak power and efficiency during acceleration and cruising.
How do I know if the #65 main jet is correct for my V-twin?
The correct main jet size depends on your specific Mikuni carburetor model, engine modifications (such as intake and exhaust), riding altitude, and fuel. Always consult a tuning guide or a qualified mechanic for recommendations for your setup.
Are these jets compatible with stock Harley-Davidson or Indian Motorcycle carburetors?
These are large round main jets designed specifically for aftermarket Mikuni carburetors. Stock Harley-Davidson and Indian Motorcycle carburetors typically use different jet styles and sizes.
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 | 134-7065 |
| WEIGHT | 0.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
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✓ VERIFIED
Mar 27, 2021
It's an oem Mikuni jet not much to say.
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Mar 25, 2021
Great product packaging very good
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May 16, 2020
good part
✓ VERIFIED
Sep 27, 2019
5 Stars
✓ VERIFIED
Jul 2, 2015
Fast shipping, very satisfied
