Mikuni HSR 45/42 Total Carburetor Kit - 45mm Carburetor Harley Twin Cam
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.
Unlock significant power and torque from your Harley Twin Cam or Evolution Big Twin with the Mikuni HSR 45/42 Total Carburetor Kit. This kit features a 45mm HSR carburetor, a specially designed intake manifold, and a high-flow air filter, all engineered to deliver maximum airflow and fuel delivery to your V-twin engine.
Why riders pick this
- 45mm HSR carburetor for enhanced fuel delivery
- Special intake manifold for optimized airflow
- High-flow air filter supports up to 100 horsepower
- Rubber intake flange for a secure, leak-free connection
- Comprehensive kit for Big Twin Evolution and Twin Cam
When it's time to take your Twin Cam or Evolution Big Twin to the next level, proper fueling is paramount. This Mikuni HSR 45/42 Total Carburetor Kit provides a complete, performance-oriented intake solution. Every component is chosen to work in harmony, minimizing restriction and maximizing engine efficiency, which translates directly into more usable power on the street or strip.
Comprehensive Performance Upgrade
- Features a powerful 45mm HSR carburetor for optimal fuel delivery
- Includes a special intake manifold designed for improved flow
- High-flow air filter rated to support up to 100 horsepower
- Durable rubber intake flange for a secure and vibration-dampening seal
- Breather kit included for 1993-1999 Evolution models
Ready for the Road
This kit offers a robust upgrade path for riders looking to move beyond stock limitations. While it comes nearly complete, remember that manifold clamps and seals are sold separately to allow for customization. For owners of 1984-1989 Evolution models, 1990-1995 model year cables will be required to ensure proper fitment and operation.
Specifications
- Brand: Mikuni
- Manufacturer Part #: F45-4
- Carburetor Size: 45mm
- Length: 8.7 in
- Width: 16.1 in
- Height: 5.9 in
- Weight: 8.33 lbs
- Country of Origin: Japan
Common questions
What components are included in this Mikuni Total Carburetor Kit?
This kit includes a 45mm HSR carburetor, a special intake manifold, a rubber intake flange, a high-flow air filter, and a breather kit for 1993-1999 models. Manifold clamps and seals are not included.
Will this carburetor kit fit my Twin Cam Touring model?
Yes, this kit is designed to fit Twin Cam models, including many Touring, Softail, and Dyna bikes. Please verify specific year and model compatibility using our Shop by Bike tool.
Do I need to purchase additional parts for installation?
You will need to source manifold clamps and seals separately. For 1984-1989 Evolution models, you will also need 1990-1995 model year intake cables.
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 | 14-2022 |
| WEIGHT | 8.33 lb |
