Keihin 21 Series Pilot Jets

Keihin 21 Series Pilot Jets
Keihin 21 Series Pilot Jets

$20.99

  • Description
  • 1 Review
  • 25 Questions
Description Item #KHN0001
  • Keihin 21 series pilot jets are used in PJ, PWK, PD, and 20 - 32 mm PE carburetors.
  • Sold in a 4-pack.

Read More
1 Review
4.3 out of 5 stars
5 Star   2 4 Star   1 3 Star   1 2 Star   0 1 Star   0
hatch527
Verified Purchaser
Durability   Ease of Installation   Performance   Power   Style  
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


Read More
25 Questions
Answered:   24
Not Yet:   1
DonLong
Location: New Albany, Indiana, USA
Q: I need 4 jets, 2 main #185 and 2 pilot 48#?
16 days ago
I wanted to get a professional consult... 02 Honda VT1100 with Hard Krome Kicker exhaust with baffles, and a UNI oiled air filter. The carbs are out now and I want to get the jetting right before I reinstall the carb. Problems were backfiring on deceleration and loss of high end power I lose power at 3500-4000 rpm ... I was thinking at 23k miles I couldn't hurt by replacing a plunger vacuum, and air fuel mixture diaphrams. The 180 Dynojet main jet installed from the stock 178 main jet still seems small maybe a 185 will be better. I hope a new 48 pilot jet changed from the stock 42 pilot jet. might help I would love to hear your professional opinion before I reinstall the carbs...
yamaha90
Location: United States
Q: Will this fit 2007 yz450f?
Over 9 months ago
MotoSportExpert
MotoSport Staff Expert
Over 9 months 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?
Over 10 months ago
MotoSportExpert
Expert MotoSport Staff
Over 10 months 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?
Over 11 months ago
MotoSportExpert
MotoSport Staff Expert
Over 11 months 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?
1 year ago
MotoSportExpert
Expert MotoSport Staff
1 year 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...?
1 year 1 month ago
will this give more power+ speed to my 07 ttr 125L
MotoSportExpert
MotoSport Staff Expert
1 year 1 month 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?
1 year 1 month ago
MotoSportExpert
Expert MotoSport Staff
1 year 1 month 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
Camm
Location: Jackson, OH 45640, USA
Q: What size pilot jet do i need to get for a 2001 Honda xr100r?
1 year 3 months ago
the one i have is clogged and I've done everything to clean it. just wont come undone. the bike set for close to 2 years. and I"m just rebuilding everything.
MotoSportExpert
MotoSport Staff Expert
1 year 3 months ago
A: The stock pilot jet for your 2001 Honda XR100R is a 35 and can be found in our OEM section here: http://www.motosport.com/dirtbike/oem-parts/honda/2001/xr100/carburetor
benn
Location: Massachusetts, USA
Q: How do I find out what size jets i need when running an after market exhaust setup?
1 year 4 months ago
MotoSportExpert
Expert MotoSport Staff
1 year 4 months ago
A: 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.
mike
Q: How would I know if I'm running too lean or too rich? How would I know if I have the carburetor tune?
1 year 4 months ago
I get all the way up in 5th gear and it feels like its running out of power it starts to hesitate when I twist the throttle all the way
MotoSportExpert
MotoSport Staff Expert
1 year 4 months ago
A: Check out our Tech Tip Blog post on Jetting:
http://www.motosport.com/blog/a-simple-guide-to-jetting-your-carb
MotoXman
Over 10 months ago Location: Alabama
A: Your main jet is too small, I would go up one size at a time until the problem is resolved.
1-10 of 25

Read More