Mikuni 'HSR42' and 'HSR45' Smoothbore Carburetor Kits

Increase in power and torque with improved starting. Kit comes with adjustable accelerator pump and smooth bore design gives 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.

Mikuni HSR42mm Easy Kit for Sportsters, Big Twin, and Twin Cam 88 Models

High performace kits mount to stock Intake manifold and include the carb, adapter, air cleaner cover (where necessary), and detailed installation/turning manuals. (Note: Carb kit uses stock cables unless otherwise noted)

8409- Fits 1990-99 1340 Evolution Big Twin with stock CV type manifold. Includes 42mm carb, airbox adapter and chrome cover.Will not work with cruise control. $299.99

8410- Fits Big Twin 1999-2006 Twin Cam 88 models. Includes 42mm carb and airbox adapter. Uses stock air cleaner cover. Will not work with cruise control.  $269.99

8411- Fits 1200 Sportster 1994-04. Includes 42mm carb, with special airbox black plate. Requires the use of the stock oval cover and a high flow replacement air filter element. $299.99

8412- Fits 1200 Buell models 1994-02 must use aftermarket performance air filter.  $294.99

Mikuni HSR42mm & 45mm Total Carb Kit for Big Twin, and Twin Cam 88 Models

Includes performance intake manifold, rubber flange, high-flow K&N filter, air cleaner cover breather kit and hardware. Everything needed fora complete installation. (Note: Carb ktis uses stock cables unless otherwise noted)