Great quality for a great price
Mikuni Large Round Main Jet #132.5 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 the perfect air/fuel ratio for your carbureted V-twin with this 4-pack of genuine Mikuni Large Round Main Jets in #132.5 size. These jets are crucial for precise fuel metering at cruise and part-throttle, ensuring your Harley-Davidson or Indian Motorcycle engine runs cleanly and powerfully. Don't compromise on your tune.
Why riders pick this
- Genuine Mikuni OEM quality for trusted performance
- Exact #132.5 size for precise fuel calibration
- Large round style fits specific Mikuni carburetors
- 4-pack quantity for tuning flexibility or spares
- Crucial for optimizing air/fuel mixture
Every performance modification to your V-twin, from a new air cleaner to a different exhaust, impacts your engine's fuel demands. These genuine Mikuni large round main jets in #132.5 size provide the precision required to re-jet your carburetor accurately. A correctly jetted carburetor prevents issues like hesitation, poor fuel economy, and potential engine damage from running too lean or too rich.
Consistent Fuel Control
- Genuine Mikuni OEM manufacturing for reliable operation
- #132.5 orifice size for balanced fuel delivery
- Large round body style for specific Mikuni carburetor fitment
- 4-pack offers flexibility for tuning and spare parts
The Right Jet for the Right Ride
Optimizing your V-twin's carburetor means being able to fine-tune every aspect of fuel delivery. This 4-pack of Mikuni main jets gives you the tools to ensure your Harley or Indian motorcycle is always running its best, whether you're adjusting for different riding conditions or new performance parts. It's an essential item for any serious V-twin enthusiast.
Specifications
- Brand: Mikuni
- Manufacturer Part #: FN100604-132.5
- Quantity: 4 per pack
- Length: 4.4 in
- Width: 2.2 in
- Height: 0.6 in
- Weight: 0.05 lbs
- Country of Origin: Japan
Common questions
What's the effect of changing main jet size?
Increasing the main jet size enriches the fuel mixture (more fuel), while decreasing it leans out the mixture (less fuel). This adjustment is vital for engine performance and longevity.
Will these fit my Harley with a Mikuni carb?
These jets are compatible with V-twin motorcycles using Mikuni carburetors that accept large round main jets. Always verify your carburetor model and the jet style it uses before placing an order.
Do I need to adjust other carburetor settings with a new main jet?
Often, changing the main jet is part of a broader tuning process that might include adjusting pilot jets, needle position, and air/fuel mixture screws for a complete and balanced tune. Consult a tuning guide.
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 | 134-71325 |
| WEIGHT | 0.05 lb |
It's an oem Mikuni jet not much to say.
Great product packaging very good
good part
5 Stars
Fast shipping, very satisfied