Mikuni Smoothbore 45mm Carburetor - Harley Touring & Softail
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.
Experience maximum fuel delivery for your modified V-twin engine with the Mikuni Smoothbore 45mm Carburetor. This high-flow carb is built for performance applications, ensuring your engine gets the fuel it demands.
Why riders pick this
- 45mm smoothbore for maximum fuel and air delivery
- Ideal for modified and high-displacement V-twin engines
- Designed to accept OEM Harley throttle cables
- Robust construction for consistent performance
When your modified Harley-Davidson or Indian Motorcycle engine needs to breathe, the Mikuni Smoothbore 45mm Carburetor delivers. Its large bore size is engineered to support high-displacement and high-performance V-twin builds, providing the necessary fuel and air mixture for aggressive power delivery.
Engineered for High-Flow Applications
- 45mm smoothbore design for maximum airflow and fuel volume
- Optimized for modified V-twin engines and performance builds
- Accepts OEM Harley throttle cables for straightforward connection
- Durable construction ensures reliable performance
Unleash Your Engine's Potential
The Mikuni Smoothbore 45mm Carburetor is an essential upgrade for serious V-twin performance enthusiasts. While it's designed for direct fitment, it requires compatible intake manifolds, which are sold separately. This carburetor is ideal for riders pushing the limits of their Harley Touring, Softail, or Dyna platforms, demanding peak performance and a responsive powerband.
Specifications
- Brand: Mikuni
- Manufacturer Part #: FTM45-2K
- Carb Size: 45mm
- Length: 6.4 in
- Width: 6.7 in
- Height: 6.9 in
- Weight: 2.92 lbs
- Country of Origin: Japan
Common questions
What intake manifold do I need for this carburetor?
Intake manifolds are sold separately. You will need to verify that your chosen intake manifold has a bore size compatible with this 45mm carburetor before ordering.
Will this carburetor work with my stock Harley intake manifold?
Stock intake manifolds may not be compatible with the larger 45mm bore of this performance carburetor. It is crucial to confirm your manifold diameter before attempting installation.
Is this carburetor compatible with OEM Harley throttle cables?
Yes, this Mikuni 45mm carburetor is designed to accept OEM Harley-Davidson throttle cables, simplifying the integration into your V-twin motorcycle.
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 | Intake/Carb/Fuel System |
| SKU | 14-1989 |
| WEIGHT | 2.92 lb |
