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Mikuni HSR42 Jet Kit

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J&P Part: 401-370

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Mikuni HSR42 Jet Kit

Fitment Note: Fits Mikuni HSR 42 carburetor.

• Includes 150 through 170 main jets (2 each); 22.5 through 35 pilot jets (2 each); -96, -97 and -98 needles (1 each); 2 #60 a/p nozzles; needle clip; all necessary washers, special jet box

Important Product Notes

Product Specs

Carb Jets: Main Jets

Sold in Units: Kit


Fitment Note: Fits Mikuni HSR 42 carburetor.

Customer Reviews

Overall Rating:
5/5 based on 5 ratings

5 by

Great Kit, worked very well for me...

5 by


5 by

bought a used hsr42 and needed to get it back to stock to tune it properly. this was a great way to do that without paying a shop too much money. got the carb tuned for my bike and getting 38+ mpg. awesome.

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