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Keihin 21 Series Pilot Jets
Keihin 21 Series Pilot Jets


Description See Also: 4 Reviews 47 Questions Part Numbers
Item #KHN0001

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4 Reviews
4.3 out of 5 stars
5 Star   2 4 Star   1 3 Star   1 2 Star   0 1 Star   0
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Verified Purchaser

Verified Purchaser
Durability5/5Ease of Installation5/5Performance5/5Style5/5

Verified Purchaser
Durability5/5Ease of Installation5/5Performance5/5Power5/5Style4/5

Verified Purchaser
Durability5/5Ease of Installation5/5Performance5/5Power5/5Style5/5
Great product

product was exactly as pictured in the picture just did not fit my application. i guess i needed to do more research on it before i just ordered

47 Questions
Answered:   43
Not Yet:   3
Q: I have a Keihin carb on a crf 50 with a 88 kit what size jets would I need?
2 days 16 hours ago
Q: I have a 2002 Honda Shadow Spirit 1100. I was wondering if this would fit and what size would be best. I think it has a 42 in it right now but I’m not sure. 
12 days ago
Trevor Gearhead
Top 10
12 days ago
A: It comes stock with a 42 and this will fit. What works best depends on a few factors. What exhaust and intake you have are huge factors and so is elevation. Stick with the 42 if it's all stock. Reach out to the manufacturer of you pipe if that's aftermarket, for suggestions.
Q: Will these work on my 2013 KLX110l
1 month 14 days ago
Top 10
1 month 14 days ago
A: This will be the slow jet series for your bike. I would refer to the sizing currently i the bike to match the correct tune.
Q: Would this fit a 2003 Suzuki RM 250?
1 month 19 days ago
Top 25
1 month 19 days ago
A: Unfortunately it would not they are used in PWK carbs 20-32mm. Your specific carb is a PWK38mm. If you have any questions give us a call at 1-888-676-8853
Q: Will this fit a Honda crf125f? If so, what size is this?
1 month 23 days ago
Top 1
1 month 23 days ago
A: That jet will work in your bike. The stock size is a #38 jet.
Q: Will this work for a 07 TRX450R ?
2 months 9 days ago
Top 25
2 months 9 days ago
A: Your Honda uses a FCR carb and these would not work on your carb you would need to check out the OEM section: https://www.motosport.com/atv/oem-parts/honda/2007/trx450r-%28electric-start%29/carburetor-%28%2706_%29
Q: Will this work for a 06 crf250r ? 
Over 5 months ago
Over 5 months ago
A: It fit an 04
stunt guy
Q: I have a 2012 CRF 450X will this fit will the 35/4pack work?
Over 5 months ago
Top 10
Over 5 months ago
A: The 2012 Honda CRF450X comes stock with a Keihin FCR13A Carburetor.
The Keihin 21 series pilot jets are used in Keihin PJ, PWK, PD, and 20 - 32 mm PE carburetors.

Original Honda jets for your CRF450X are available at this link: https://www.motosport.com/dirtbike/oem-parts/honda/2012/crf450x/carburetor

Other carburetor parts to precisely fit your '12 CRF450X are available at this link: https://www.motosport.com/dirtbike/carburetor-accessories?mmy=honda%3Bcrf450x%3B2012&has_mmy=true

Our FMF and JD Jetting Jet Kits are an exact fit for your CRF450X.
Q: Can you show the fuel flow thru the piolet jet
Over 6 months ago
Top 1
Over 6 months ago
A: I'm sorry, but I am unsure what you are asking. Please give us a call so that you can explain your needs.
Q: Will this work on yz400f
Over 6 months ago
1 - 10 of 47
# Part Numbers
Product Variant Manufacturer Part #
35 / 4 Pack KE019.005 4/PK
38 / 4 Pack KE019.006 4/PK
40 / 4 Pack KE019.007 4/PK
42 / 4 Pack KE019.008 4/PK
45 / 4 Pack KE019.009 4/PK
48 / 4 Pack KE019.010 4/PK
50 / 4 Pack KE019.011 4/PK
52 / 4 Pack KE019.012 4/PK
55 / 4 Pack KE019.013 4/PK
58 / 4 Pack KE019.014 4/PK
60 / 4 Pack KE019.015 4/PK
62 / 4 Pack KE019.016 4/PK
65 / 4 Pack KE019.017 4/PK
68 / 4 Pack KE019.018 4/PK
70 / 4 Pack KE019.019 4/PK
72 / 4 Pack KE019.020 4/PK
75 / 4 Pack KE019.021 4/PK
78 / 4 Pack KE019.022 4/PK
80 / 4 Pack KE019.023 4/PK