Mikuni HSR42 Smooth Bore Carburetor For Harley Big Twin

The Mikuni HSR carburetor remains one of the most effective upgrades for riders chasing sharper throttle response and real-world power. Its smoothbore design delivers crisp control and consistent fueling, making it a favorite for high-performance Harley builds and custom applications. Built with Mikuni’s proven quality, it’s designed for long-term reliability.

Features:

• For the high-performance engine builder who needs a carb for specific custom applications
• HSR smoothbore carburetors offer excellent throttle response and control
• Well made for years of dependable service
• Made in Japan