Mikuni HSR42 Performance Carburetor Kits for Sportsters and Buells

MikuniHSR42Sportster-BuellMikuni offers 2 different HSR42 Performance Carburetor Kits for Sportsters and Buells. One Kit, just for Sportsters includes a special airbox backing plate as shown to work with the stock oval cover and a Screamin’ Eagle high flow replacement filter.

The other Kit, without the backing plate, works on both Buells and Sportsters with an aftermarket performance air filter assembly. The Mikuni Kits work with the stock push-pull throttle cable assembly.

Mikuni claims that the popular Mikuni HSR42 Performance Carburetor Kits Sportsers, Buells and stock Big Twins are offering a 25% increase in power and torque when used with an aftermarket exhaust system. All Mikuni HSR  smoothbore carburetors offer a high air flow while providing highly accurate fuel metering, more power, and Mikuni’s renowned precision throttle response. Carburetors are designed with an 8-roller bearing flat throttle slide assembly for smooth throttle control with reduced effort, that allows an unobstructed venturi at full throttle to flow more air, while it mixes fuel more precisely at all throttle settings. The Mikuni adjustable accelerator pump provides instant throttle response in any riding or performance application while a high capacity float bowl prevents fuel starvation even under full throttle applications.

Mikuni HSR Carburetors and their Performance Features, Tuning Components, Replacement Parts and Rebuild Kits are available from Mikuni Dealers and Distributors in the USA and Worldwide.

Barnett Harley-Davidson

5 Responses to “Mikuni HSR42 Performance Carburetor Kits for Sportsters and Buells”


  1. 1 Sporty Nov 28th, 2013 at 6:11 pm

    who rides Sportys or Buells anymore?
    Me !! Sweet !

  2. 2 Kingcycles Nov 28th, 2013 at 11:28 pm

    These work better than fuel injection.

  3. 3 Calif Phil Nov 29th, 2013 at 10:03 am

    One of the best things you can add to a Sporty

  4. 4 Toby Nov 29th, 2013 at 1:18 pm

    For off-road use only.

  5. 5 James Dec 2nd, 2013 at 4:35 am

    hmmm great insights!!!

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