Keihin 21 Series Pilot Jets

Keihin 21 Series Pilot Jets
Keihin 21 Series Pilot Jets

$20.99

Description See Also: 1 Review 28 Questions Part Numbers
Item #KHN0001

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1 Review
4.3 out of 5 stars
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All Reviews
hatch527 Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5
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

28 Questions
Answered:   26
Not Yet:   2
shawn
Location: santa clarita, ca
Q: I need to increease the size of my pilot jet. stock is a #52. is bigger a higher number or loweer number?
Over 6 months ago
also what is the difference between the 21 series and the 22 series??
Suzuki
Q: I have a 2007 RMZ 450 whats the standard jet size in them? I need to fatten it up for winter. the diffeence between the 21 series and 22 series jet?
Over 10 months ago
sands
Q: This makes no sense?
1 year 1 month ago
Why would anyone aside from a repair shop want 4 of the same pilot jet!? This should be a 4 pack of different sizes within the range of what the user thinks will work for his altitude, temp etc... The whole reason to re-jet your bike is to test various sizes to see which size runs the best. Dumb.
MotoSportExpert
MotoSport Staff Expert
1 year 1 month ago
A: Depending on which model bike you have, individual jets in optional sizes can be found in our OEM section http://www.motosport.com/dirtbike/oem-parts
We also sell jet kits.
Many bikes that require these jets have four carburetors.

Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
sands
Q: 4 Pack of Which Numbers?
1 year 1 month ago
This is a 4 pack of what? All the same size?
MotoSportExpert
Expert MotoSport Staff
1 year 1 month ago
A: Yes the Keihin jets are sold in a 4-pack. The jet size can be selected in the drop down. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
yamaha90
Location: United States
Q: Will this fit 2007 yz450f?
2 years ago
MotoSportExpert
MotoSport Staff Expert
2 years ago
A: Yes. You can also find a variety of jets sizes sold individually in our OEM section for your bike here:
http://www.motosport.com/dirtbike/oem-parts/yamaha/2007/yz450f/carburetor
Cdawg
Location: McDonough
Q: What size do I need for my 2009 wr250f? And will it help with stuttering?
2 years ago
MotoSportExpert
Expert MotoSport Staff
2 years ago
A: The standard pilot for your 2009 Yamaha WR250F would be a 42 found in our OEM section here:
http://www.motosport.com/dirtbike/oem-parts/yamaha/2009/wr250f/carburetor

There is not a specific setting I could give you for jetting your bike. It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
MotoGuys98
Q: What size jet to get form my 2016 yz450f and getting a dr. d complete carbon fiber exhaust? or recromeded?
2 years 1 month ago
MotoSportExpert
MotoSport Staff Expert
2 years 1 month ago
A: Your 2016 Yamaha YZ450F is a fuel injected machine and does not have jets. However a fuel programmer would be recommended for optimum performance when installing a complete system. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Rm250
Location: Wrightsville, GA 31096, USA
Q: What size do i need for my stock 2000 Suzuki rm250?
2 years 3 months ago
MotoSportExpert
Expert MotoSport Staff
2 years 3 months ago
A: The stock pilot jet for your 2000 Suzuki RM250 would be a 42 (09492-42019 ) and can be found in our OEM section here:

http://www.motosport.com/dirtbike/oem-parts/suzuki/2000/rm250/carburetor-%28model-w~x~y%29/jet%2c-pilot-%2842%29-|-model-y/09492-42019
dirtbiker38
Q: Will it fit...?
2 years 3 months ago
will this give more power+ speed to my 07 ttr 125L
MotoSportExpert
Expert MotoSport Staff
2 years 3 months ago
A: No, not necessarily. It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
tysmith13
Location: Maine, USA
Q: What size pilot jet would i need for a stock 97 rm250?
2 years 4 months ago
MotoSportExpert
MotoSport Staff Expert
2 years 4 months ago
A: The stock pilot jet for your 1997 Suzuki RM250 would be a 48 found in our OEM section here:
http://www.motosport.com/dirtbike/oem-parts/suzuki/1997/rm250/carburetor-%28model-v%29/jet%2c-pilot-%2848%29/09492-48013
1-10 of 28
# 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
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