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Mikuni HSR Smoothbore Easy Carburetor Kit 45mm

(25 reviews)

Item: 349819-307385

$353.42

Select Your Vehicle - Fitment Guaranteed

Mikuni HSR Smoothbore Easy Carburetor Kit 45mm


Mikuni Easy Carburetor kit fits 1999 to 2006 Harley Davidson Twin Cams and 1990 to 1999 Harley Davidson Big Twin EVO engines that have a Screamin' Eagle intake manifold. Each kit includes 45mm carb, air box adapter, instructions. For the maximum available increase in all round performance and power available, this kit will instantly impress.

  • Larger spigot diameter than stock requires aftermarket manifold (sold separately) from:
    • HD Screamin' Eagle manifold kit
    • Mikuni HS42/061-45 EVO manifold
    • HS42/061-45TC Twin Cam manifold which are for use on all engines with stock length cylinders
  • 2 to 3 HP gain over the standard item.
  • When using S&S Shorty air-cleaners, some material will need to be ground off the outer edge of the S&S backing plate for clearance
  • Includes N100.604-170 and N100.604-180 main jets for tuning
  • Made in Japan

Product Note: Only fits models with Screamin' Eagle or Mikuni aftermarket intake manifold, (sold separately).

Specification Details
Bore 45 mm
Choke Type Cable
Country of Origin Japan
Height 176 mm
Intake Bell O.D. 65 mm
Main Jet 175 (N100.604)
Manifold Type Spigot
Manifold to Manifold 90mm
Needle 8CFY2-97
Needle Jet Y-6 (723)
Needle Valve 4.2 (786-27001)
Pilot Jet 25 (VM28/486)
Spigot Mounting O.D. 49mm
Throttle Valve 3.0 (TM42/08)
Width 100 mm

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • CVO FXR2 1999
  • CVO FXR3 1999
  • CVO FXR4 2000
  • FLHR Electra Glide Road King 1994
  • FLHR Road King 1995-2006
  • FLHRS Road King Custom 2004-2006
  • FLHS Electra Glide Sport 1990-1993
  • FLHT Electra Glide Standard 1995-2006
  • FLHTC Electra Glide Classic 1990-2005
  • FLHTCU Ultra Classic Electra Glide 1990-2006
  • FLHX Street Glide 2006
  • FLST Heritage Softail 1986-1990, 2006
  • FLSTC Heritage Softail Classic 1987-2006
  • FLSTF Softail Fat Boy 1990-2006
  • FLSTN Heritage Softail Nostalgia 1993
  • FLSTN Heritage Softail Special 1994-1996
  • FLSTN Softail Deluxe 2005-2006
  • FLSTS Heritage Springer Softail 1997-2003
  • FLSTSC Softail Springer Classic 2005-2006
  • FLTC Tour Glide Classic 1990-1991
  • FLTCU Ultra Classic Tour Glide 1990-1995
  • FLTR Road Glide 1998-2004
  • FXD Dyna Super Glide 1995-2005
  • FXDC Dyna Super Glide Custom 2005
  • FXDI35 35th Anniversary Dyna Super Glide 2006
  • FXDL Dyna Low Rider 1993-2005
  • FXDS-CONV Dyna Convertible 1994-2000
  • FXDWG Dyna Wide Glide 1993-2005
  • FXDX Dyna Super Glide Sport 1999-2005
  • FXDXT Dyna Super Glide T-Sport 2001-2003
  • FXLR Low Rider Custom 1990-1994
  • FXR Super Glide 1990-1994
  • FXRS Low Glide 1990-1992
  • FXRS-CONV Low Rider Convertible 1990-1993
  • FXRS-SP Low Rider Sport Edition 1990-1993
  • FXRT Sport Glide 1990-1992
  • FXST Softail 1990
  • FXST Softail Standard 1999-2006
  • FXSTB Softail Night Train 1999-2006
  • FXSTC Softail Custom 1990-1999
  • FXSTD Softail Deuce 2000-2006
  • FXSTS Springer Softail 1990-2006
  • FXSTSB Softail Bad Boy 1995-1997

Customer Reviews


Good deal

By   on  Verified Purchaser

Great deal, was pretty much plug and play, couple of minor adjustments and it's working great.


Mikuni HSR42

By   on  Verified Purchaser

I have a 2000 Fatboy that was all stock. I replaced the CV carb last year and had nothing but issues after replacing it. After installing the Mikuni HSR42 Carb easy kit, my bike is running amazing! Very easy to install, made very small idle adjustments and right back on the road. It has the quickest throttle response of any carb I've used! Very happy with my purchase!


Perfect

By   on 

This could not have been easier to install. The performance is fantastic.


Excellent Upgrade, Great

By   on  Verified Purchaser

This carb setup really improved the performance and reliability of my 1999 Heritage Softail. I received the carb along with the air cleaner adapter and spare jets. You can't ask for more!


Mikuni HSR42 Carb

By   on  Verified Purchaser

Easy install, worked great


Bike runs great

By   on  Verified Purchaser

Bike runs great with minimal adjustments thank you.


Mikuni HSR Carburetor Kit

By   on  Verified Purchaser

So far, so good, definitely a noticeable difference, not drag racing but noticeable. Easy install on "93 EG" Still tuning the right sweet spot! The air cleaner adapter can be a little mind teaser.


Mikuni HSR42 Kit

By   on 

Work like it should ran great no adjustment needed


Great Price

By   on  Verified Purchaser

Quality product for a great price.


Mikuni HSR42 Carb

By   on  Verified Purchaser

Had to do a little bit of alterations but pretty simple works just fine


Mikuni HSR42

By   on  Verified Purchaser

Absolutely great carburetor.


Mikuni

By   on  Verified Purchaser

Great carburetor, easy install as stated. Definitely better performance out off the box.


Runs well

By   on  Verified Purchaser

Easy install, able to use stock air cleaner, o.e. choke cable w/mikuni supplied spring and barrel.


Best bang for your buck

By   on  Verified Purchaser

Easy install and a phenomenal performance upgrade. Crisp throttle with instantaneous response. Don't even consider other carbs, this us the one to get.


Happy Bike

By   on 

Great performance out of the box. Did a little research and fumbled upon Joe Mintons settings. Followed them to the letter! The old girl runs like a champ. Instant throttle response. More power than ever. The bike just seems happy. Definitely 5 stars.


New life to my 1998 Fatboy

By   on  Verified Purchaser

Works great. My Fatboy runs better than ever.


HSR42

By   on  Verified Purchaser

The carb did what I thought it would and should.


Recommended

By   on  Verified Purchaser

After using this unit for some time, I'm able to say it has worked perfectly, fit as expected, was tuned out of the box, and simple to install.


I had 3 minor issues, but I'm very pleased

By   on  Verified Purchaser

I had 3 minor issues, but I'm very pleased with the HSR42. 1) Instructions said V.O.E.S. Switch must be relocated behind horn for carb to fit. This wasn't mentioned in ad. I found an easier way by removing the mounting bracket from the VOES switch, connecting it to the carb with a 1 1/2" piece of hose. It just floats above the carb vacuum fitting. I didn't have to disturb any wiring. 2) Ad said Sportster choke cable would work. It does, but it's too long. About 4" shorter would be ideal. On the CV carb the cable comes out of the carb toward the rear of the bike. The HSR connects on the side toward the front, putting it closer to the knob mounting point. 3) Sportsters use 1/4" ID fuel line. The HSR carb sent me has a 5/16" ID fuel inlet. This caused a trip to the hardware store to get a 5/16 to 1/4 barbed reducer. No problem, except now I have 4 connections in my fuel line instead of 2. The good part is that once hooked up the bike fired right up, and ran better than ever. The HSR was tuned good enough for me right out of the box.


Mikuni hsr 45

By   on  Verified Purchaser

Highly recommended, did zero tuning on this carb and slapped it on my bike right out of the box and it's running amazing.


Best carb for your older H-D

By   on  Verified Purchaser

This is a terrific carb for your old H-D. With the tuning kit, you can dial the carb in to meet your specific needs, whether that's higher MPG for touring, or higher HP. Really great carb. Lifesaver!


Cranking

By   on  Verified Purchaser

Love it. Night and day difference. Install not too bad I have to say.


PartsGiant & HSR 42 - a Great Combo!

By   on 

Put the HSR 42, 42-11 Easy Kit onto my 2000 Buell M2. Easy installation, quality product. Jetting out of the box was near spot-on. Crisp throttle response and a lot of fun to ride. Feels like more power. Good product. These are the guys to buy from!


Great move on my part

By   on  Verified Purchaser

Sick of messing around with my cruddy old carb. This thing with a little tuning really opened my hog up! Only complaint is the long idle cable, other than that highly recommend!


Great price and service

By   on  Verified Purchaser

Great product, fit perfect.


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Questions & Answers


Does this carb fit on the 2006 sportster 883 ?

So long as you choose that 2006 XL883 Sportster before adding to your cart, you should have no fitment problems.

By Andy

Have a question? Please ask our experts and customers who own this product.