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Mikuni HSR42
18 Reviews

Mikuni HSR42 "Total" Carburetor Kit

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J&P Part #:  400-681
Mfr Part #:  42-8

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Mikuni HSR42
Mikuni HSR42 "Total" Carburetor Kit

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Mikuni HSR42

Mikuni HSR42 "Total" Carburetor Kit

RPM Member Price: $539.09
Order in the next to ship today

Product Details


Description for Mikuni HSR42 "Total" Carburetor Kit

There are carburetor kits, and then there's the Mikuni HSR42 Total Carburetor Kit. When you're ready to take your motorcycle's performance to the next level, it's time for a carburetor kit that improves starting, rideability, power, and torque. Get all that and more in this kit, featuring 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. The Mikuni HSR42 Total Carburetor Kit includes HSR42 carburetor, performance intake manifold, free-flowing K&N air filter assembly, chrome air-cleaner cover, adaptors and detailed installation and tuning manual. Not compatible with cruise control. Fits all carbureted Evo Big Twin Models.

• Improves starting

• Improves Power

• Improves torque

• Two-piece throttle slide

• Lighter throttle-return spring

• Low-speed air screw

• Enlarged needle valve

• Fits all carbureted Evo Big Twin models

• Not compatible with cruise control

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Mikuni HSR42

Product Specs for Mikuni HSR42 "Total" Carburetor Kit

Bore Size:
Manufacturer Part Number:
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Fitment Questions?

With over 750 years of experience combined, our tech staff has the answers!

  • Harley-Davidson®

    • Dyna Low Rider Convertible FXDS CONV : 1994–1998
    • Dyna Low Rider FXDL : 1993–1998
    • Dyna Super Glide Custom FXDC : 1992
    • Dyna Super Glide Daytona FXDB-D : 1992
    • Dyna Super Glide FXD : 1995–1998
    • Dyna Super Glide Sturgis FXDB S : 1991
    • Dyna Wide Glide FXDWG : 1993–1998
    • Low Rider FXSB : 1985
    • Softail Bad Boy FXSTSB : 1995–1997
    • Softail Custom FXSTC : 1984–1999
    • Softail Fat Boy FLSTF : 1990–1999
    • Softail Heritage Classic FLSTC : 1987–1999
    • Softail Heritage FLST : 1986–1990
    • Softail Heritage Springer FLSTS : 1997–1999
    • Softail Night Train FXSTB : 1998–1999
    • Softail Nostalgia FLSTN : 1993–1996
    • Softail Springer FXSTS : 1988–1999
    • Softail Standard FXST : 1984–1990, 1999
    • Super Glide Custom FXRC : 1985
    • Super Glide Disc Glide FXRDG : 1984
    • Super Glide Fat Bob FXEF : 1985
    • Super Glide FXR : 1986–1994
    • Super Glide FXR2 : 1999
    • Super Glide FXR3 : 1999
    • Super Glide FXR4 : 2000
    • Super Glide Grand Touring FXRD : 1986
    • Super Glide II FXR : 1984–1985
    • Super Glide Low Rider Anniversary FXRS : 1988
    • Super Glide Low Rider Convertible FXRS CONV : 1989–1993
    • Super Glide Low Rider Custom Anniversary FXLR : 1987
    • Super Glide Low Rider Custom FXLR : 1987–1994
    • Super Glide Low Rider FXRS : 1984–1992
    • Super Glide Low Rider Sport FXRS SP : 1987–1993
    • Super Glide Police FXRP : 1984–1994
    • Super Glide Sport Glide FXRT : 1984–1992
    • Touring Electra Glide Classic Anniversary FLHTC : 1988
    • Touring Electra Glide Classic EFI FLHTCI : 1996–1998
    • Touring Electra Glide Classic FLHTC : 1984–1998
    • Touring Electra Glide Police EFI FLHTPI : 1997–1998
    • Touring Electra Glide Police FLHTP : 1986–1996
    • Touring Electra Glide Sport FLHS : 1987–1993
    • Touring Electra Glide Standard FLHT : 1985–1990, 1995–1998
    • Touring Electra Glide Ultra Classic EFI FLHTCUI : 1995–1998
    • Touring Electra Glide Ultra Classic FLHTCU : 1989–1998
    • Touring Road Glide EFI FLTRI : 1998
    • Touring Road Glide FLTR : 1998
    • Touring Road King Classic EFI FLHRCI : 1998
    • Touring Road King EFI FLHRI : 1996–1998
    • Touring Road King FLHR : 1994–1998
    • Touring Road King Police FLHP : 1996–1998
    • Touring Road King Police FLHPI : 1996
    • Touring Tour Glide Classic Anniversary FLTC : 1988
    • Touring Tour Glide Classic FLTC : 1984–1992
    • Touring Tour Glide FLT : 1985–1986
    • Touring Tour Glide Ultra Classic EFI FLTCUI : 1996
    • Touring Tour Glide Ultra Classic FLTCU : 1989–1995
    • Wide Glide FXWG : 1985–1986
Product Notes

Important Product Notes

1984-88 Big Twins require the use of 1990-95 style throttle cables.

Cannot be installed on 1984-88 FLT models, gas tanks may not clear carburetor.

Shipping Note

Due to state regulations we cannot ship this item to the state of California.

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Ratings & Reviews

Help Customers Understand This Product

18 Reviews
Rating Breakdown
5 stars
4 stars
3 stars
2 stars
1 star
July 8, 2020
I was told the total kit had everything, the direction said go to your H.D. desler for sesls and clamps.
April 21, 2020
5 Stars
January 24, 2020
Top price and delivery to New Zealand was FAST. Make sure you order new flanges and seals though as kit does NOT have them.
January 6, 2020
I ordered this for my wifes 98 Low Rider. Just comparing side by side this is a way nicer carb that the factory HD. Installation was pretty easy would of been nice with better directions but we figured it out. Does not come with intake seal so order them at the same time. Its winter in Montana so I have note rode yet but started right up, idles great and throttle very responsive. Very happy with the way it runs can not wait for warmer weather to ride.
September 30, 2019
Put this on my Soft Tail Classic great throttle response amazing performance
August 23, 2019
Perfect fit and works great on my 85 Harley Low Rider FXSB. Had to get new throttle cables.
March 1, 2019
5 Star
March 1, 2019
5 Star
October 1, 2018
Great Product Love it, Delivery quicker than local. Go figure 5 days from the states. 10 or more from a delivery 2hrs down the road. Definitely ordering from here again and again and again.
April 1, 2016
easy to install and started instantly... my only complaint is the two intake manifold o rings were not included

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Mikuni HSR42