Ride Engineering Fuel Mixture Screw

$21.99
4.30 out of 5 stars
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Ride Engineering Fuel Mixture Screw
Ride Engineering Fuel Mixture Screw
  • Description
  • Reviews (37)
  • Q&A (8)
  • Fitment

RIDE ENGINEERING specializes in products that customize the motorcycle to optimize motorcycle performance while enhancing its appearance. All RIDE ENGINEERING motocross products have been thoroughly track tested by professional racers for performance and durability. By combining rider feedback with their engineering expertise, they produce the highest quality products available at a fair price and they do it all here in the U.S.A.

  • Designed to adjust the fuel mixture in the carb without any tools.
  • Billet aluminum, anodized for hardness.
  • Available in black, blue, green or red.
  • Must reuse stock O-ring, washer and spring.
4.3 out of 5 stars (37)
4.3 out of 5 stars
5 star   26
4 star   6
3 star   3
2 star   1
1 star   1
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1-10 of 37
Overall 3 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
D3VILxDOG
Screw backed out

i had to ziptye the screw once it went past a turn and a half out. If not the screw would work itself loose and fall out. Save the time and hassle and by the Flexscrew that is for sale on here.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Jason
Great product

Great deal and comes with new spring and o-ring unlike others!

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Reno, NV
Jason
Great Purchase

Easy to install and adjust on my CRFX 450 with included instructions. Fits snug and has stayed secure. This part should come on a stock bike. Small blemish on the anno, not a big deal.

Overall 5 out of 5 stars
Ease of Installation
Style
Verified Purchaser
Location: O??ahu, Hawaii, USA8!.!.a&".P,".H>".R.1X` 0".9isstringunindentedcollectionitem_&".x9!.!.port.co
Brian
Makes Life Easier

Easy to install, easy to use. The design and large numbers makes it easy to keep track of how far you have adjusted your mixture.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Top 25 Contributor Top 50 Contributor Top 100 Contributor
Location: Spokane, WA, USA
450dirtscoot
Fuel screw

one part that you just have to have on any 4 stroke bikes should have them as oem.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Oklahoma City, OK
whynot81
Works Great

Does what it was designed to do...makes small adjustments to the pilot mixture easy when the engine is hot. Looks good and seems durable. Install took about two minutes. I don't have a whole lot of time on it yet but it hasn't backed out like some other posts.

Overall 3 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Canyon Country CA.
CRFRicky
Fuel screw

after i purchased this product,i came across the R&D Flex Jet,returned the fuel screw,no problems ,MotoSport has exceptional service hands down,a pleasure to do business with them,check out the R&D Flex Jet,same price as the fuel screw but a much better product for adjusting your fuel mixture on your four stroke,verry happy with mine, easy to instll and adjust, 013 CRF 150RB,check out pics,Easton bars, bar mounts, bar pad and grips also from MotoSport

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Top 500 Contributor Verified Purchaser
Location: Milton FL
CDPresley
Works Well

Works as advertised, and makes it easy to change the fuel mixture

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Top 1000 Contributor
Location: palmyra new york
Chris
Awesome!

Bought to smooth out power on my 2011 yz250f after installing fmf slip-on smoothed out power and eliminated back firing with a simple twist!

Overall 4 out of 5 stars
Durability
Ease of Installation
Performance
Style
Top 1000 Contributor Verified Purchaser
Location: Nashville, TN
Preruntn
Simple improvement

This fuel screw has been a great improvement. No special tools are needed to adjust mixture. Even though mixture is set by rpm, the numbers on the fuel screw are a nice addition for keeping quick adjustments simple.

1-10 of 37
Total Questions (8)
Questions with answers:
  8
Questions without answers:
0
SethH Location: Turner, Or
1-8 of 8
shanes13 1 year ago
Will this work on a 2012 yamaha yfz 450 with the bsr 42 mm carb?
Top 1 Contributor
Over 10 months ago
MotoSportExpert
Ride Engineering Fuel Mixture Screw fit all models of Kehin FCR carburetors.
Sarkis 2 years 3 months ago Location: Los Angeles
Do you have to take the carb off in order to install?
2009 YZ250F...is it possible to install without taking the Carburetor totally off on a 2009 YZ250F?
Top 25 Contributor Top 50 Contributor
2 years 3 months ago Location: Spokane, WA, USA
450dirtscoot
oh yeah its ez . the best way i have found how to get the stocker out is to use a bit from a cordless screwdriver it is short enough to get under the carb but not hit the motor. be care full not to lose the spring washer and o-ring from the stock one you have to use them on your new screw. hope this helps.
MotoSport Staff
2 years 3 months ago Location: Portland, OR, USA
MotoSportExpert
It can be done with the carburetor on the bike but it is much easier to do it with the carburetor off. You must be very careful as there are 3 small items( washer, spring, o-ring) that sit up inside the carburetor body that can be lost very easily. If you can have the carburetor turned upside down when removing the screw it is almost impossible to lose track of these pieces. Sometimes they will stay stuck in the carburetor and it is just as bad to have extras stuck in there, as not having them all in there. If you do install this with the carb on the bike, it is a good idea to put a white rag on top of the engine case under the carb so when you pull the screw if the those items happen to fall they will be caught. Sometimes they can fall out and you wont even notice it as they are so small and think they stayed in body and then with the new screw installed the bike runs poorly due to an air leak there. Just make sure to keep track of the items so you can assemble the new screw like the one that came out and you should have no issues.
Zacky Over 5 years ago
Where can you put this?
Can you put this on the stock carb of a CRF 250R 2006 Model? Does this replace the jets? if not how do you put it in and what does it replace on your old carb?
Top 100 Contributor
Over 5 years ago Location: Easton, PA
brian79
It goes in the very bottom of the carb. Right now you will see a tiny brass flat-head screw that is a pain to adjust with a screw driver. Remove it, and it looks like the top half of this fuel screw. The bottom half sticks out of the carb for easy tool-free adjustment.
Top 100 Contributor Top 25 Contributor Top 50 Contributor
2 years 4 months ago Location: Spokane, WA, USA
450dirtscoot
yep fits stock carb it replaces the fuel screw you just dont have to have a screwdriver to adjust with this one and man is it better!
Zacky Over 5 years ago
How easy?
How easy is it to install on an 05 CRF 250R? I've never done this so i want to know if its something i could do.
MotoSport Staff Expert
Over 5 years ago Location: Portland
MotoMoo2
Very simple install. Only requires a screw driver to removed the old.
Top 100 Contributor Top 50 Contributor Top 25 Contributor
2 years 4 months ago Location: Spokane, WA, USA
450dirtscoot
as eazy as un-screwing the old fuel screw and putting the parts off the old one on the new screw and screwing it in
freestyleracer Over 6 years ago Location: williamstown n.j.
Carb. bowl?
do u have to get a new bowl to use it because my 2009 kx 250f air/fuel mixture is on the inside of the bowl
MotoSport Staff Expert
Over 6 years ago Location: Portland, OR
james718
That doesn't make sense, I've never heard of the fuel screw being inside the fuel bowl. How do you adjust the fuel mixture than? I looked up the schematics of the carb on your bike and it doesn't show it in the float bowl. http://www.motosport.com/dirtbike/oem.php?make=KAWASAKI&type=DIRT&model=KX250F&year=2009&groupId=83577
Top 100 Contributor Top 50 Contributor Top 25 Contributor
2 years 4 months ago Location: Spokane, WA, USA
450dirtscoot
nope it is an extended version of a stock screw and will fit
Frogdog Over 6 years ago Location: PNW
Will this fit an 06 Kawasaki KLX250S?
I've read forums where poeple have used them in this bike but it's not on "the list".
Expert MotoSport Staff
Over 6 years ago
james718
I show this as not fitting. If you've done some homework and heard it might, well that would be up to you.
Top 100 Contributor Top 25 Contributor Top 50 Contributor
2 years 4 months ago Location: Spokane, WA, USA
450dirtscoot
if you have an fcr klein carb it will fit
mxriderjason14 Over 6 years ago
When you have your fuel screw installed, how do uyou make the bike run good with the screw, do you have to racord the number of twists?
MotoSport Staff Expert
Over 6 years ago
james718
reference your service manual for the actual spec on the factory setting. I've always been told that if you have to adjust the fuel screw out more that 2 full turns from MFG specs you need to rejet the carb.
Top 50 Contributor Top 25 Contributor
2 years 3 months ago Location: Spokane, WA, USA
450dirtscoot
put new screw in all the way back out 1 1/2 turns test throtle for bog keep going out till you get no hesitation. if its colder the screw will be turned in more and as it gets warmer out back the screw out. its a moving target ride to ride if the temp isnt the same.
SethH Over 7 years ago Location: Turner, Or
No problem with tuning back to normal?
Top 100 Contributor
Over 7 years ago Location: Pascoag, RI
Lemire109
once you install the product just screw it all the way in and back it out the factory number of turns. usually 1.5-2 turns out from seated. after that just make small adjustments until throttle response is optimal. its a piece of cake and the instructions are detailed and well written.
Top 25 Contributor Top 50 Contributor
2 years 3 months ago Location: Spokane, WA, USA
450dirtscoot
nope no permantent mods just save the stocker and put it back if you want but you whont.
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