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Driven USA MX Rear Sprocket Yamaha YZ 125/ YZ 250/ YZF 250/ WR 250 f

Fits: YZ 125 1999-2008/ YZ 250 1985-1997/ YZ 250 1999-2007/ YZ 250F 2001-2008/ YZ 400F 1999/ YZ 426F 2000-2002/ YZ 450F 2003-2008/ WR 250F 2001-2008/ WR 400F 1999-2001/ WR 426F 2000-2002/ WR 450F 2003-2008

 
Item no: 5031
Today's Sale Price: $62.95
Application Chart Diagrams Application
Notes
2001 Yamaha WR 250F OEM: 49, Range: 49- 53
2002 Yamaha WR 250F OEM: 49, Range: 49- 53
2003 Yamaha WR 250F OEM: 49, Range: 49- 53
2004 Yamaha WR 250F OEM: 49, Range: 49- 53
1999 Yamaha YZ 125 OEM: 49, Range: 49- 53
2000 Yamaha YZ 125 OEM: 49, Range: 49- 53
2001 Yamaha YZ 125 OEM: 49, Range: 49- 53
2002 Yamaha YZ 125 OEM: 49, Range: 49- 53
2003 Yamaha YZ 125 OEM: 49, Range: 49- 53
2004 Yamaha YZ 125 OEM: 49, Range: 49- 53
2005 Yamaha YZ 250 OEM: 50, Range: 49- 53
1999 Yamaha YZ 250 (L1) Competition OEM: 50, Range: 49- 53
2000 Yamaha YZ 250 (M1) Competition OEM: 50, Range: 49- 53
2001 Yamaha YZ 250 (N1) Competition OEM: 50, Range: 49- 53
2002 Yamaha YZ 250 (P) OEM: 50, Range: 49- 53
2003 Yamaha YZ 250 (R) OEM: 50, Range: 49- 53
2004 Yamaha YZ 250 (S1) OEM: 50, Range: 49- 53
2005 Yamaha YZ 250F OEM: 49, Range: 49- 53
2001 Yamaha YZ 250F (FN) Competition OEM: 49, Range: 49- 53
2002 Yamaha YZ 250F (FP) Competition OEM: 49, Range: 49- 53
2003 Yamaha YZ 250F (FR) OEM: 49, Range: 49- 53
2004 Yamaha YZ 250F (FS) OEM: 49, Range: 49- 53
Options
 Color(required):
Black
Metallic Blue
Silver
 Size(required):
49 teeth
43 teeth
44 teeth
45 teeth
46 teeth
47 teeth
48 teeth
This item does NOT ship for free
Shipping charges will apply to this item. If you place your order now we will call with the shipping rate. If the rate is approved by you we will charge you the additional shipping. If the rate is NOT approved by you then we will cancel your order. If you do not wish to place your order now you can enter in the quantity you wish to order and your zip code in the Q&A section below and we will respond with a quote.
WARNING: Laws concerning this product vary from state/province to state/province. Your state/province may prohibit its use on public roads or restrict its use to novelty, show use, off-road areas, or race facility areas only. In some states/provinces off-road uses are also prohibited. The manufacturer and retailer assume no responsibility for any use or application of this product in violation of any applicable law. Before installing this product, please check your state/provincial and local/municipal laws and regulations.
The Q&A on this Product
QUESTION:  i have 1993 yz 250 with a 53/13 sproket set up But i dont have enough top end witch one should change and by how much??
ANSWER:  You can go up in the front or down in the rear. It is a matter of preference
QUESTION:  I have an on road 1998 YZ 400F. What is a good sprocket choice for some town riding, a bit of motocross and some enduro/ trail riding. My gearing now is 15/49
ANSWER:  i would say probebly 15-47
QUESTION:  What is the stock sprocket size on a 05 yz 250?
ANSWER:  14T front 50T rear
QUESTION:  Gear recommendations for WR450F (2009)? Mostly trail riding.
ANSWER:  13-51
QUESTION:  i have a wr250f 01 i like to race enduro and trail riding i have 13/52 what would you recommend???
ANSWER:  i would use 13-53 for more low end power
QUESTION:  I have a 2003 kx 125 I want more bottom end out of it my gear ratio is a 13/51 now what should i change it to??
ANSWER:  go to a 12/51
QUESTION:  hey i ride track mostly and a bit of trails what is the reccomended gear ratio for my 02 yz250 i am running a 14t front and 50 rear will it get out of the staring gate and keep with the others??
ANSWER:  I WOULD SAY GO TO A 13 50 FOR MORE PUNCH
QUESTION:  i have a 2004 YZ 250f with stock spockets i trail ride and run out in the dunes im looking for something to keep me up with the 450s what should i use and whos the best to get the spockets from
ANSWER:  GO WITH A 13-49 OR A BIG BORE KIT TO KEEP UP WITH THE 450'S
QUESTION:  I have a tao-tao china ata 125D (atv) i WOULD LIKE TO SLOW IT DOWN FOR TRAIL RIDING. WOULD i INCREASE THE REAR SIZE BY 1-2 TEETH? AND DO I HAVE TO CHANGE FROUNT AND REAR?
ANSWER:  you can go up in the rear or down in the front it will be the same i am not sure if anyone make sprockets for that bike
QUESTION:  I have a 99 yz250 with 14/51. What would be the best sprocket combination for trail riding or occasionally the motocross track
ANSWER:  14-50 should be good with 114 link chain
QUESTION:  I have a 2002 WR250F and done some mods on it, i have 14t in front and 52t rear. i just want to change my gearing to use it sometimes in road. what is best, please help. mikel b.
ANSWER:  for street use try 15-45/46
QUESTION:  Hey mate ive got a chinese brand 250cc four stroke, i get about 70/kmph at about 6000rpm in 5th got a sprocket combo of 15/50 im looking for a top speed of 110kmph what size rear sprocket do u recommend
ANSWER:  Hi if you have engine power to push it try a 15-43/44
QUESTION:  I have a ktm 620 sc and has a running a 14-50 will replacing the 50tooth rear sprocket to a 48t make much difference? cheers
ANSWER:  it will give you about 4%-5% more top end speed
QUESTION:  2008 WR250F. Can I use the stock chain or is a replacement chain necessary when I go from 50 (stock) rear to a 52 tooth, and if so what length/size replacement chain do I need? Thank You.
ANSWER:  YES YOU WILL NEED TO GET A 116 LINK CHAIN
QUESTION:  2008 WR250F with 14-50 stock sprockets. I ride more single track trails, my bike has typical bolt on mods, and I need a bit more low end to pop the front-end up over logs (throttle snap) like I did no my older Honda XR400. I want to keep the front a 14 tooth, what should I change the rear sprocket to?
ANSWER:  to get a noticable diff go to a 52 or a 53
QUESTION:  have a 09 wrf450-13/50.works well for Enduros. would it be worth while to change rear sprocket to 46-48 for GP racing to gain top end speed? very fast/muddy conditions-still want to have good starts and pull out of corners.
ANSWER:  to go to a 46 will be too much a 48 should make a big diffrance
QUESTION:  i have a yzf450 2004 , i am after trail riding so not need to much bottom end im running a 14 on front and a 43 can i fit a 15 on this or will chain hit the engine
ANSWER:  NO YOU CAN FIT A 15 AS FAR AS I KNOW
QUESTION:  ihave a yamaha yz 125 2004 got 13T on the front 49t on the back what is the all around best power top and bottom end
ANSWER:  best combo for all around riding should be 13-50/51
QUESTION:  Hi,I do motocross and some enduro on a 2005 yz125 with 13/48.What is a better rear sprocket to get more low rpm torque but not loose to much top end. 13/49 or 13/50. Is one tooth quite noticeable?
ANSWER:  GO TO A 50 REAR 1 TOOTH IS VERY LITTLE CHANGE
QUESTION:  I have a 2004 yz250f it was used for track racing with 13 in the front and 48 in the rear. I use it only for open desert now, I need more topend to hang with the honda 450's. Should i go 14f 48r? or something more extreme?
ANSWER:  GO WITH A 14 AND MAYBE A 47 OR A 46
QUESTION:  I have a ktm 250sxf with 13/48 gearing. I ride very tight forest mountain terrain with creek bed rock climbing. I was thinking of gearing my bike to 13/52. What ratio do U recommend? Would I need a new chain or will a stock chain work?
ANSWER:  13.52 WILL BE GOOD AND YES YOU WILL NEED A NEW CHAIN 12.48 WILL BE ALMOST THE SAME AND YOU WILL NOT NEED A NEW CHAIN
QUESTION:  I have a 2003 YZ250 and I had 14/50 ratio. I changed it to 12/50 ratio. I dont even use first gear anymore. Will a 13/50 be more suitable?
ANSWER:  it will allow you to use 1st gear
QUESTION:  I have a 2002 yamaha yz250. It has stock gearing. What gearing should i put on it? i mainly ride at the motocross track but occasionally trails.
ANSWER:  13-50 will be good
QUESTION:  i just put a new top end on my sons 2001 yamaha yz250f at one time this was mainly a track bike but now it is only a desert machine. it currently is running a 13/48. would a 14/48 be more suitable for the desert.
ANSWER:  yes you will have more top end speed and less stress on the motor
QUESTION:  I have a 2005 yz250 with a 14-50 just bought a new chain. Was wondering if I put a 13-50 do I need to change the links on the chain.
ANSWER:  no!
QUESTION:  I have a 2005 yz250 currently on 14-50 was wondering what ratio I should use for more power on the race track?
ANSWER:  do a 13-50
QUESTION:  I have a 03 yz125 i currently run a 13/49... i ride mainly tracks. Occasionally trails..what would be a good compromise.
ANSWER:  13-50 will give you more low end power
QUESTION:  What sprocket combo do you reccomend for a 2009 yzf 250 american version all around (trail, hill, and dirt)Right now i know that the rear is a 49 . please help
ANSWER:  14-48
QUESTION:  i got a yz 125 2006 wats the front wheel nut size? mine came off the first time riding.
ANSWER:  
QUESTION:  i i have a yz 125 2009, currently running tandard gearing 13-48 but am not pulling 6th gear anywhere what should i change to? maybe 13-50 or 14-50 not too sure, what do you think is best?
ANSWER:  13 50 will be better
QUESTION:  what are the stock chain links comes for all brands of bikes like Yamaha YZ125&YZ250F 98-09, Honda CR125&CRF250R 99-09, Suzuki RM125&RMZ250 04-09 please reply and thankyou
ANSWER:  They are all different.
QUESTION:  I want to put a 52 tooth rear sprocket on a stock yz250f. should I get a new chain or can I just add links. If I add links, how many?
ANSWER:  no get a new chain to match your rear if you don't both will not last make sure you change the front too!
QUESTION:  Hi. I have a stock '06 YZ250F. I would like to buy a performance chip for the bike? Any ideas? Also what gearing should I set up for track use? 13/50? *Thanks, DJ
ANSWER:  13-50 WILL GIVE YOU BETTER LOW END POWER
QUESTION:  08 yz250f best gearing for tight trails
ANSWER:  13-49
QUESTION:  hi i have a 99 yz 125,stock gearing at d minute,13-48.i want big a change cause its mostly tight low gear trail + forestry driving??
ANSWER:  go to a 13-51/52
QUESTION:  Hello, I have a 02 yz250 and i would like a little more top end. it has a 50 on the rear. should i got to a 14 on the front, or go to a 48 on the rear??? thanks
ANSWER:  either will give you more top end
QUESTION:  I have a 2001 yz250. What size is the bolt that holds on the front wheel?
ANSWER:  ask your yamaha dealer we are not sure
QUESTION:   i need more low end power and high acceleration at slow speeds (trail riding.. lots of turns) best rear sprocket? # of teeth .. riding a 1998 yz 125 (144)
ANSWER:  13 front 50/51 rear
QUESTION:  i have a stock 03 yz250. It seems i need a 6th gear. I ride alot of backroads/trails. what would you recomend?
ANSWER:  go up 1 in the front
QUESTION:  i need more low end power and high acceleration at slow speeds (trail riding.. lots of turns) best rear sprocket? # of teeth 50?
ANSWER:  what bike?
QUESTION:  I have a 2003 YZ250 and it had 14/50 stock gears in it...I put a 12 tooth in the front for the hills in colorado...What would be better a 12/50 or 13/50 ratio?
ANSWER:  12-50 will give you more low end power
QUESTION:  I want to give my 2004 yz450f more low end power to putt around some enduro stuff and climbing ability. Is 14 - 50/51 the best way to bridle this beast. I know this is a pure racer at the core but I would like to tame it a bit.
ANSWER:  Yes, This will definitley help you access the low end power of your bike.
QUESTION:  Not to be a pain. Would 13 51 be too much?
Q: I have a 05 yz 250, race motocross (am)and wanted to more low end for starts, trying to start out of the gate in 3rd gear because i heard other guys are doing it and getting better starts. What gear ratio would you recommend.
A: not to loose too much top end try a 14-52 or a 13-50
ANSWER:  it will be almost the same!
QUESTION:  I have a 05 yz 250, race motocross (am)and wanted to more low end for starts, trying to start out of the gate in 3rd gear because i heard other guys are doing it and getting better starts. What gear ratio would you recommend.
ANSWER:  not to loose too much top end try a 14-52 or a 13-50
QUESTION:  I HAVE A 2007 YZ 127 I HAVE 13-49 WANT A BIT MORE TOP END WITHOUT LOOSING TO MUCH BOTTOM END SHOULD I GO 14 OR 15 AT FRONT AND LEAVE THE BACK THE SAME? THANKS
ANSWER:  YES GO TO 14 NOT A 15
QUESTION:  hey mate i have a kx125 1996 im not sure what sprokets are on it now but im chassing alot of bottom end. what would you recomend?
ANSWER:  go up to in the rear
QUESTION:  I own a yz450f 2003 I want to trail ride and I do not know a good sprocket combo. Can you guys help
ANSWER:  13-48
QUESTION:  i have a 2007 cr 125 stock gearing is 13 52 thinking on changing front sprocket to a 12 tooth and back to a 52 same how much difference will there be better horsepower???
ANSWER:  much more low end
QUESTION:  i have a 2006 yz 125 whats the best sprocket size for motocross racing? i saw someone else with the same question on my bike but will going 13-49 make a difference. Will i still have enough top end power to clear jumps?
ANSWER:  yes you should
QUESTION:  i have a 2005 kx125 i was wondering wat the best sproket combo would be to get more power without sacrificing too much speed, thanks
ANSWER:  try a 13-52 combo
QUESTION:  YZ 125 2006 - what will be a good all-round Enduro set-up for this? It is a weekend bike en Enduro fun use only - not motorcross.
ANSWER:  13-50 will work realy good for a enduro
QUESTION:  hi i have a yz250 02 and currently have a 14-51 setup, i have a 14-52 ready to go on will it make any difference
ANSWER:  samll dif but yes it will
QUESTION:  2006 YZ 250, stock gearing, if I want just a touch more bottom end power without changing the front sprocket should I switch from the rear 50 tooth to a 51 tooth?
ANSWER:  51-52 DEPENDING ON HOW MUCH MORE LOW END YOU WANT TO FEEL. 1 TOOTH IN THE REAR IS A VERY MINOR CHANGE AND IS HARDLY NOTICEABLE.
QUESTION:  I have an 01 yz 125 and all I ride is trails in alaska, lots of mud, rocks and hills. What sprocket combo would be the best for this kind of riding, I have a 13/48 on there now and that just makes the rear wheel spin to much, I need to keep more power to the ground. And also is there anything I can do to get better fuel mileage, I went through three tanks on a five hour ride.
ANSWER:  try 14-48 this will give you less low end power and it will spin less
QUESTION:  hi, i have a yz450, with a 14-48, i'm looking for more top end speed, what is the best combination, for dirt roads. thanks
ANSWER:  go to a 46 rear or a 15 front for more top end speed
QUESTION:  I have an 03 yz250f and am looking for midrange power for racing tracks where I am mainly in 2-4th gear. which sprocket combo would best suit me?
ANSWER:  13-50
QUESTION:  2003 yz250, want better low-end for trailing, have stock sprockets, what will help? sprocket? flywheel? both? thanx!!
ANSWER:  YES BOTH DO A HAVEY FLY WHEEL AND A 13-50
QUESTION:  I just bought a Yz250F 2009 and looking at changing the sprockets for track/competition use. What will be the best combo?
ANSWER:  13-48
QUESTION:  What sprocket combo do you reccomend for a 97 yz250 all around (trail, hill, and dirt) i use the bike for long rides also. Right now i know that the rear is a 50 and i just picked up a 48. please help
ANSWER:  13-50
QUESTION:  i am buying a tag sprocket. kit what is the best chain/gold. and sprocket set up for low end power? thanks
ANSWER:  you didn't specify a bike and we don't sell tag
QUESTION:  in your opinion, what is the best sprocket combo for a 2002 yz250 for an all around great bike for riding back roads/fields and just riding in the country? thank you
ANSWER:  stock 14-50
QUESTION:  i have a 2002 yz 250, i would just like too know what you think the best all around combination for the sprokets would be if i want to receive the most power and speed together?? thank you
ANSWER:  You can't have both its one or the other
QUESTION:  I have a 2001 yz125 I want to know what would be the best suspension setting for motocross. I weigh 170lbs and a novice rider.THANKS
ANSWER:  we can only answer gearing questions in this section
QUESTION:  I have a 03 YZ250 thinking of changing spockets to take a little from the bottom end and put it on the top end just a little. What should I do?
ANSWER:  13-48
QUESTION:  Hi, I bought a 2009 yz 250 f (European version) .The bike comes with a 13/51 stock transmition which I think it makes the bike too short. What is the best set ?? 13/48 ? 14/51 ? And what is the stock sprocket on the US version
ANSWER:  14-51 will be better 13-49 is the usa gearing
QUESTION:  hi i have an arqin rt200 it has a stock 48 back sprocket not sure about the front wat could i do to give it both more top end power and low and power cheers
ANSWER:  you can't have both at the same time and we don't have any application for the arquin mc
QUESTION:  how much differents will it be if you have a front sprocket with 12 theeth then a front sprocket with 14 theeth? and if i put on a 12 teeth sprocket will i be able to go as if i was useing a 13 teeth sprocket and the bike im useing is a yz250f
ANSWER:  12-14 is a big diffrent
QUESTION:  I have a yz250f with a stock 13 on the front and 49 on the back. What is the best combination for racing where 4th is about all that is hit
ANSWER:  48 rear
QUESTION:  what difference will a 50 tooth sprocket make compared to a 48 tooth sprocket on my yzf400 1999
ANSWER:  about 10 %
QUESTION:  I have a 01 yz 125 im looking for more low-mid power on a few tight turns and jumps for motorcross racing without losing to much top end would 12/50 be best or 13/50 sprocket ratio
ANSWER:  12/50
QUESTION:  i have a 2006 yz 125 what is the stock rear sprocket? What will be the best set up for motocross racing, i was thinking going down a tooth or 2 on the rear for more top speed
ANSWER:  13-48 is stock 13-49 is best
QUESTION:  HI,I HAVE A YZ 250 F 02 ,I HAVE A 13 ON FRONT & 48 ON REAR IF I PUT 14 &47 ON REAR WILL IT GIVE ME MUCH MORE TOPEND ,IS THERE MUCH DIFFERANCE ?
ANSWER:  yes you will notice it.
QUESTION:  i see on the chart 49-50 for the 2000 yz250 what if is the 14-48 good? thanks joe
ANSWER:  14-48 will give you more top end speed
QUESTION:  hi i would like to us what combination of sprocket fits to my yz125 for motocross racing?
ANSWER:  13-50
QUESTION:  With a stock 14 tooth sproket in front and a 50 in rear would it be good to do a 13 in front and a 52 in rear for a 01 yz 250 for more low end torq and will a stock size chain still fit thanks
ANSWER:  the chain should fit altough ou should change them as a set and yes this will get you more low end.
QUESTION:  hi so i would like the 12 teeth sprocket for front ...and 47 teeth for back and a new chane to and a front brake kable and leaver . email me if u can get them and the price so i can bye ok
ANSWER:  just order it on the site and it will give you a total
QUESTION:  hi i nead a 47 teeth sprocket for yz 125 2000 model can u get one and big one for the front and chane to fit sprockets.. if so tell me the price to get it to wellington n.s.w. 47 gisborn st. post cod 2820
ANSWER:  front are 12-14 shipping will be aprox $20
QUESTION:  hi i have a yz 125 2000 model im looking for more power in top end 6 bolt sprocket about 47 49 teeth looking for a small sprocket . what do u suggest to give me max power in top gear
ANSWER:  STOCK IS 48 IF YOU WANT MORE TOP END SPEED GO WITH A 47 IF YOU WANT MORE POWER DOWN LOW GO WITH A 49
QUESTION:  hi i have an 84 it 250 do you have a 48 sprocket? 6 bolt bolts are inset if so how much and how long to ship to vancouver canada thanks.
ANSWER:  yes we do part # 5036-520-48 about 3 days
QUESTION:  I have a yz250 2005 I am trying to change the front sprocket. does the nut unscrew counter clockwise? I know this sounds pathetic but I am new to this :) I not sure if it is reverse threated, if not any ideas on how to loosen it ?
ANSWER:  use an impact gun and yes lefty loosy righty tighty:)
QUESTION:  I have a yz250 yamaha i have on it 14t counter sprocket & 50t rear, if you put a 13t sprocket with a 51t rear,will it make bike have alot of tourqe or less . it feels it has to much for me now. thanks danny
ANSWER:  THEN IF YOU DO IT YOU WILL HAVE EVEN MORE GO DOWN TO A 48 IN THE REAR AND IT WILL MAKE YOU HAPPY. DRIVEN RACING
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