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Mikuni HSR45 Smoothbore Carburetor

(2 reviews)

Item: 382868

$362.03 – $479.87

Select Your Vehicle - Fitment Guaranteed

Mikuni HSR45 Smoothbore Carburetor


  • For the high-performance engine builder who needs a carb for specific custom applications
  • HSR smoothbore carbs offer excellent throttle response and control
  • Well made for years of dependable service
  • Not for use on models with cruise controls
  • Airbox adapter HS42/001-K must be ordered separately
  • Choke cable included
  • Made in Japan
Specification Details
Bore Varies (make selection above)
Choke Type Cable
Country of Origin Japan
Finish Varies (make selection above)
Height 176 mm
Intake Bell O.D. 65 mm
Main Air Jet Varies (make selection above)
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)
Size Varies (make selection above)
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
  • 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 1990, 2006
  • FLSTC Heritage Softail Classic 1990-2006
  • 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
  • FXDB Dyna Daytona 1992
  • FXDB Dyna Sturgis 1991
  • FXDC Dyna Glide Custom 1992
  • FXDC Dyna Super Glide Custom 2005
  • 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
  • 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
  • XL1200C Sportster 1200 Custom 1996-2003
  • XL1200S Sportster 1200 Sport 1996-2003
  • XL883C Sportster 883 Custom 1998-2003
  • XL883R Sportster 883R 2002-2003
  • XLH1200 Sportster 1200 1988-2003
  • XLH883 Sportster 883 1988-2003
  • XLH883DLX Sportster 883 Deluxe 1988-1995
  • XLH883HUG Sportster 883 Hugger 1988-2003

Customer Reviews

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Excellent for my bike

By   on  Verified Purchaser

I would recommend this carb to anyone. Excellent for my bike that's built up and great throttle response. Has a nice polished finish.


Highly recommended

By   on  Verified Purchaser

Everything was on point.


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Questions & Answers

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What is the adjustor on the side of the carb for?

That adjuster is to be able to tune the idle speed where you would like it.

By Andy
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