90-94 FX Model, 91-99 Dyna, 90-99 Softail, 90-99 Touring
Improve starting, rideability, power and torque. The adjustable accelerator pump and smoothbore design combine to give a big increase in air flow over the earlier ‘HS40’ for excellent throttle response in any riding situation. Other features include a two-piece throttle slide that rolls on stainless roller bearings, a lighter throttle return spring, a low-speed air screw, and an enlarged needle valve and float bowl. All kits are specifically designed for each application.
High-performance kits mount to stock intake manifold and include the carburetor, adapters, air cleaner cover (where necessary), and detailed installation/tuning manuals.