The Mikuni HSR42 flatslide carburetor delivers extremely crisp throttle response while providing an unrestricted bore for maximum flow. Maximum flow allows your engine to reach its full potential so you can accelerate and pass with confidence. An HSR42 carburetor kit bolted onto a standard Harley Twin Cam used with a Screamin' Eagle air cleaner will ADD 25% more horsepower over stock. Maximum horsepower is increased from 57.8HP to 72.2HP and torque increase from 71.4 ft.lbs. to 80.7 ft.lbs.
You'll enjoy many years of unbeatable performance and reliability. They install quickly and easily using the OEM throttle cables and choke cable. Dollar for dollar no one beats a Mikuni carburetor for performance, tunability, and reliability.
You can keep the Harley's factory look and fit while enhancing the throttle response, acceleration, power, and torque output. Mikuni's flatslide smoothbore design with accelerator pump and slide roller bearing technology delivers peak performance across the entire powerband. With Mikuni's accelerator pump technology there's no hesitation from idle to WOT. Available in 42mm, 45mm, and 48mm sizes for use with stock, mild, and highly modified engines.
The Mikuni HSR42-18 Easy kit is simple bolt-on horsepower for all 1990-1999 Big Twins and 1999-Present Harley-Davidson Twin Cam motorcycles. The carburetor in this kit comes in either a standard finish or in a polished finish, don't forget to select your option now before adding to your cart. Available in 42mm, 45mm, and 48mm sizes for use with stock, mild, and highly modified engines. ALL of the following components are included for an extremely easy installation:
- Mikuni HSR42 (TM42-6) or HSR45 (TM45-2) pre-jetted flat slide carburetor with roller bearing slides, polished or standard finish
- HS42/001 Air box adapter with OEM bolt pattern
- HS42/003 Adapter o-ring
- HS42/070 Spacers
- HS42/071 O-rings
- HS42/072 Gasket, air box
- N100.604-155 Main jet for fine tuning
- N100.604-165 Main jet for fine tuning
- Z70/146 Cable ties
- Z70/045 Hose clamp
- HS42/073 Cable lubricant pen
- Extra horsepower is always included!
NOTE : This kit uses the Twin Cam stock oval cover and works with Screamin' Eagle performance filters.
This carb kit comes pre-jetted for immediate installation. It is designed to work with the OEM intake manifolds, choke cable, air cleaner, and throttle cables. Tuning and performance specs have been developed over the years to suit a wide variety of conditions, however some fine tuning may be required to attain the desired combination of performance, fuel mileage, and drivability. Extra main jets are included for tuning and additional genuine Mikuni parts and accessories are always available at low prices. Alternatively kits can be customized utilizing your own jetting specifications.
WARNING : This carburetor kit will seriously wake up your motorcycle!
Some "other" retailers may be selling these kits incomplete. They don't include all the necessary items for a successful installation and that forces you to buy more items, possibly at a higher cost. These kits from The Power-Barn are 100% COMPLETE, you will need nothing else for installation...guaranteed!
Please feel free to contact us with any additional questions or requests, we are available by direct line, IM, or email. We are available for tuning and setup questions as well as continuing product support after the sale.