Mikuni Bleed Pilot Jets #25 - Harley & Indian V-Twin VM28/486 Carbs
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.
Refine your V-twin's idle and low-rpm cruise with this 4-pack of Mikuni Bleed Pilot Jets. Sized #25, these jets are engineered to provide precise fuel control for VM28/486 carburetors, ensuring smooth cold starts and responsive off-idle throttle.
Why riders pick this
- Optimizes idle and low-rpm fuel mixture
- Ensures smooth cold starts and off-idle response
- Specific fitment for VM28/486 Mikuni carburetors
- High-quality, precision-machined components
- Provides flexibility for carburetor tuning
Proper jetting is fundamental for unlocking the full potential of your carbureted V-twin, and the pilot circuit plays a critical role in how your bike behaves at lower speeds and off the line. These Mikuni Bleed Pilot Jets in size #25 are specifically designed for VM28/486 Mikuni carburetors, allowing you to fine-tune the pilot circuit for optimal performance. You'll notice improved engine smoothness and a more predictable throttle response, making your ride more enjoyable whether you're cruising or navigating traffic.
Unleash Smoother Low-End Performance
- Controls fuel delivery for smooth idle and low-rpm cruising
- Helps eliminate bogs and hesitations during initial throttle opening
- Precision-engineered for VM28/486 Mikuni carburetor applications
- Supplied as a convenient four-pack for tuning flexibility
The Impact of Correct Pilot Jetting on Your V-Twin
Many riders overlook the importance of the pilot jet, but it's vital for a well-rounded tune. A correctly sized pilot jet ensures that your V-twin receives the right amount of fuel at idle and as you first crack the throttle open, preventing lean conditions that can cause sputtering or rich conditions that lead to fouled plugs. These Japanese-made jets provide the quality and consistency needed for reliable, repeatable tuning results on your Harley or Indian V-twin.
Specifications
- Brand: Mikuni
- Manufacturer Part #: FVM28/486-25
- Quantity: 4 per pack
- Country of Origin: Japan
Common questions
What carburetor models are these jets designed for?
These #25 bleed pilot jets are specifically for Mikuni VM28/486 carburetors. They will not fit other Mikuni models or stock V-twin carburetors.
How many jets come in this package?
This product includes a four-pack of #25 bleed pilot jets, ideal for tuning and providing spares for future adjustments.
Will installing these jets require a full carburetor tune?
Changing pilot jet sizes is a part of carburetor tuning. While it addresses idle and low-throttle, you may need to evaluate other jet circuits for optimal overall performance, especially after other engine modifications.
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 | 134-0025 |
| WEIGHT | 0.05 lb |
