Aftermarket exhaust? High flow air filters? Looking for more power? You're gonna need to up-jet. Or maybe you're just cleaning the carbs and need some new stock size jets? We have the entire range available from #35 - #45. Keihin slow / pilot / idle jet. Pick your size from the dropdown menu above. These are aftermarket jets made in Taiwan, they are quality reproductions. We also have Keyster brand slow jets from Japan available.
Make sure to look up the stock size in your owners manual and start there. Honda changed the carbs on the 550 and the 750 in '77 so make sure you have the older threaded style pilot jet.
Jet Dimensions:
Jet Height: 28mm
Outer diameter: 5.5mm
Equivalent to Honda OEM part numbers:
#35 - 99124-076-0350
#38 - 99124-076-0380
#40 - 99124-076-0400
#42 - 99124-076-0420
#45 - 99124-076-0450
Fits Honda:
CB125S - 1973-1982
CB350F - 1972-1974
CB400F Super Sport - 1975-1977
CB500K - 1971-1973
CB550F Super Sport - 1975-1977
CB550K - 1974-1976
CB750F Super Sport - 1975-1976 (carburetor models B750A, 7A, 657A, 657B)(1976 carburetor model 069A used #38)
CB750K - 1969-1976
And others. . .
22 Reviews Hide Reviews Show Reviews
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Slow jet
Good fit , works well. No stamped size on jet body.
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#35 slow jet
Great improvement over the stock #38 jets in CB550F1 1976
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Slo jets #38
Worked fine responsive idle and lo end transition
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Cured my lean air fuel ratio
After many attempts to cure exhaust popping with the stock jetting #40, I purchased these. I also swapped out the idle mixture screws with a hole in them for the solid ones. Problem solved! 1972 CB750 that is stock except for a .75 mm bore increase.
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Great fit
Perfect fit for my bike to replace the stock size jets.
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Carb part
Good quality, perfect size.
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Jets
Perfect fit. Arrived fast.
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Great service
Reasonable price, quality product and fast delivery!
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Keihin Slow jets
The size 35 slow jet fixed my running rich problem.Great parts
