Kits include the HSR smoothbore carb in a natural finish
Easier, faster installation using stock CV throttle cables
Excellent throttle response, more power, improved acceleration and better gas mileage
HSR smoothbore carbs offer excellent throttle response and control
Well made for years of dependable service
Comes with installation instructions and all required hardware
Product Note:
Specification
Details
Bore
Varies (make selection above)
Choke Type
Cable
Country of Origin
Japan
Engine Type
Varies (make selection above)
Finish
Varies (make selection above)
Height
176 mm
Intake Bell O.D.
65 mm
Main Jet
Varies (make selection above)
Manifold Type
Spigot
Manifold to Manifold
90mm
Needle
Varies (make selection above)
Needle Jet
Y-6 (723)
Needle Valve
Varies (make selection above)
Pilot Jet
25 (VM28/486)
Spigot Mounting O.D.
Varies (make selection above)
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.
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 Barry K. 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 Leslee W. 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 Douglas D. 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 Andrew B. on
Verified Purchaser
Love it. Night and day difference. Install not too bad I have to say.
PartsGiant & HSR 42 - a Great Combo!
By GC 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 Joe M. 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 Sara H. on
Verified Purchaser
Great product, fit perfect.
How many stars would you give this product? Write a review.
Verified Purchaser
