The Mikuni HSR flatslide carburetors deliver 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.  An HSR45 based kit will improve performance even more!

You'll enjoy many years of unbeatable performance and reliability.  The kits install quickly and easily using the OEM throttle cables and include a choke cable with bracket.  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 and 45mm sizes for use with stock, mild, and highly modified engines.

The Power-Barn Mikuni fuel injection replacement carburetors kits provide a simple bolt-on solution for all 1999-Present Harley-Davidson fuel injection equipped Twin Cam motorcycles.  The carburetor in this kit comes in either 42mm or 45mm sizes for use with stock, mild, and highly modified engines and can be ordered with a standard finish or polished finish.  ALL of the following components are included for an extremely easy installation:

• TM42-6 Mikuni HSR42 or HSR45 pre-jetted flat slide carburetor with roller bearing slides, polished or standard finish
  
• HS42/012 K&N Air Filter, 2-1/2”
  
• HS42/02-250-CHR Cover A/C (Chrome)
  
• HS42/061-45TC Manifold
• 26995-86A Premium intake manifold seals
• HS42/062-42 Rubber Flange
  
• KHS-030 Breather Kit
  
• N100.604-155 Main Jet
  
• N100.604-165 Main Jet
• VM28/486-22.5 Pilot jet
• RS36/47 Plates, Back
• RS36/02-17 Clamp, vacuum cap
  
• Z70/042 Flat Washers, 5/16”
  
• Z70/045 Hose Clamp
  
• Z70/05512 Hose, Fuel
  
• Z70/146 Nylon Cable Ties
  
• HS42/073 Cable Lube
  
• RS36/27-075 Bolts, Hex 5/16”x3/4”
• 990-662-002 Cable, choke
• RS36/23 Bracket, choke cable
• PB5860 Rubber cap, vacuum fitting
  
• Hex Chrome petcock valve, left side mount barb facing forward (other options available)
  
• Fuel injection tank fitting adapter kit
  
• Extra horsepower is always included!

NOTE : This kit uses the Twin Cam stock throttle cables.  

ABSOLUTELY NO ONE PROVIDES A MORE COMPLETE KIT...NO ONE!

This carburetor kit comes pre-jetted for immediate installation.  It is designed to work with the OEM MAPS sensor and throttle cables.  The kit also comes with a Mikuni air filter set and so nothing else is needed for the fuel system.  If you already have or plan on using an aftermarket air filter system then you will need our kit for use with aftermarket filters.  The Power-Barn fuel injection replacement kit offers everything needed to replace the fuel injection system on 1999-Present Harley Davidson Twin Cam motorcycles, you will not need anything else for the fuel system.  Additional ignition system components may be needed and we can help with those as well.  Please inquire for kit pricing of ignition system components.

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 not be selling these kits complete.  They don't include all the necessary items for a successful fuel injection replacement 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...we guarantee it!

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.