Top Speed

[baseballplaya23]

does anyone know what the stock top speed of a 250r is? also what do you think it would be with minor porting, 38 a/s carb, lrd exhaust and esr air box eliminator?

[crazyracer250r]

probbly mlillion miles per hour

[1988R]

Originally posted by crazyracer250r
probbly mlillion miles per hour

Your wrong its a million and a half

[xx3003xrdrxx]

your mom jk idk 92 ?

[pharit]

92 yeah right,

on my 88 i can pass cars on the hiway out side my house at the speed limit is 65 and no one goes the speed limit on that road so probably 70 72 thats my quad though

but just depends on the gearing

[crazyracer250r]

no i swear a milloin i paid a cop to clock me and he told me a million i wouldnt lie no prolly a stock one bout 68-70 one with that **** maybe 72-74 jus guessin

[JTRtrx250r]

Hard question to answer bro, gearing , rider weight, into the wind (haha) ,downhill etc.. play parts

Stock.. generally 67-70 ish

Modded...75..maybe, maybe more but not too much

once you hit a certain point , I think gearing would play part a bit tho

w/ me on it... about 65464658324467 (feet a yr:blah: )

[wilkin250r]

Originally posted by JTRtrx250r
Modded...75..maybe, maybe more but not too much


What kind of mods are you talking? I'm sure I could hit 100mph on the stock cylinder (with major top-end porting, of course). It would suck to ride, but I could do it.

Add a big-bore in there, and it can be extended even further.

[88350R]

my tops out at 94!!

[JTRtrx250r]

Originally posted by wilkin250r
What kind of mods are you talking? I'm sure I could hit 100mph on the stock cylinder (with major top-end porting, of course). It would suck to ride, but I could do it.

Add a big-bore in there, and it can be extended even further. Im just responding , WAY to many variables, it wont do 100, especially w/ stock gearing no matter how ported it was. You pick up more speed w/ mods... but they usually just get you topped out quicker(faster) in a straight away

The dude asked about stock, and slightly modded, w/ the mods he listed...80 max! maybe 85, but any more is pushing it!

[JTRtrx250r]

Originally posted by 88350R
my tops out at 94!! w/ what mods, and who clocked you...a car or a cop?

[beerock]

Originally posted by JTRtrx250r
w/ what mods, and who clocked you...a car or a cop?

he has a 350 bro

[JTRtrx250r]

Originally posted by beerock
he has a 350 bro LOL...yeah, that'll definitly help things haha:D ;)

[88350R]

Originally posted by JTRtrx250r
LOL...yeah, that'll definitly help things haha:D ;)

are you being sarcastic about that helping things?she runs strong

it was a radar at a racetrack.
its a 350 powervalave motor with some porting. im runnin delta vforce reeds..how do you guys feel about those? i think there is room for improvement there...i dont think vforces are the best kind of reeds...any input appreciated as far as reeds go.

[JTRtrx250r]

I thought we were talking about a stock and modded R.., not bigbores, Hell yeah I was being sarcastic...I bet she rips! I didnt even notice your screen name at 1st, I also didnt know if it was at a drag or what...94mph is pretty close to 100 so I asked.

Im sure a hi-po 350r can come close to 100mph all tricked and pumped up, but I thought we were talking about a stock cyl'd R's, I know the roadracer 350cc Shee's can hit those speeds and corner faster than some sportbikes on the same track,and I think some of those are bigger than that, like about 400cc+. Ive seen some of those sand drag R's suprise the chit out of me, but really didnt know what kind of speeds they hit, or how long, but I dont see an R stock or modded(stock cyl) hit a hundo, w/o gearing and someone weighing about as much as a dirty filter haha:blah:

I know its been posted a 100 times, but I think the average stock R does about 67-70ish or so...

I've been wondering about the reeds and cage myself....:confused: :ermm:

[1988R]

Who really gives a chit about the top speed on a 250R. This is a question that is way too old. Most likely your not going to REALLY top it out unless you are riding some place where your not supose to be and the is most likly a straight away on the street. Im sorry but im juiced and tired of this question( riding next to your friends corvette,camaro,mustang,WRX,or EVO will not tell you how fast it is ,or its 1/4 mile) The 250R wasn't built for top speed or drags but all around performance. If you want a top speed atv get a new 450 or banshee. (Seacrest OUT!!) Na I hate that painsy as much as this question

[JTRtrx250r]

Originally posted by 1988R
Who really gives a chit about the top speed on a 250R. This is a question that is way too old. Most likely your not going to REALLY top it out unless you are riding some place where your not supose to be and the is most likly a straight away on the street. Im sorry but im juiced and tired of this question( riding next to your friends corvette,camaro,mustang,WRX,or EVO will not tell you how fast it is ,or its 1/4 mile) The 250R wasn't built for top speed or drags but all around performance. If you want a top speed atv get a new 450 or banshee. (Seacrest OUT!!) Na I hate that painsy as much as this question hey... I know haha, dudes a flattracker and wanted to know, Ive posted pretty much what you did a bunch... , it was the 100mph gig I wasnt bitin' on, not saying it cant be done..but just not w/ a stock setup R!:cuss: ;) b/c if so... I got a real POS!LOL

[88350R]

yeah thats true...you never get wide open on a mx track..but there are always those who ask.."so how fast will it run" last year i was ridin my R in town and a cop found me..he chased me for quite a while. he told me he was doin about 70 at the fastest, and it was a basically stock bike..very minor porting and a cool head and really old fmf pipe. stock gears too. the reason i know how fast he was goin is because about 6 months later i started datin this girl..and turns out her dads a sergent, we were at the cop shop one night and the guy that chased me stopped and talked to me about it. crazy deal

[beerock]

i beleieve stock speed is 72 mph


2nd, my 330 could hit 100+ if i geared it right.

a 350pv well damn, geared right will hit 110. but you have no bottom end.

ALSO, who says you cant hit 6th gear in legal riding areas???

we hit 6th over the whoops down the shore. and there not small whoops;) then again, were the only ones doing 6th down these whoops.

I have a video too but i think im only in 4th or 5th.

and on the west coast where the dunes are, liek glamis if you go down sand highway you can hit 6th and just sit back on the rear of the seat and pin it for about 10 miles......

[88350R]

lol yeah well here in ks, the part of kansas im in, the tracks are mostly small. i wish we had a place like that that wasnt too far. Waynoka is the closest place for me...I have never been there though.

[Eddiesanders250]

ya stock is prob in the low 70's. hell a stock 400 is 65.

[YFZRob]

70ish bone stock is not possible. Maybe with all the bolt-ons and stock porting it could be possible. When my R was bone stock except for a 12 tooth front sprocket (I know, lower than stock gearing), my friend was all over me trying to pass while I was pegged in 6th gear. He was on a 13 tooth (1 less than stock) Z400 with bolt-ons. With a GPS, he normally sees mid 60s. It wasn't like he slowly was creeping up on me either, he was glued to my rear bumper trying to find a way to pass. I'd have to say high 50s, MAYBE 60 BONE stock. But again, bigger carb, pipe, silencer, good condition top end, and a modified stock or aftermarket head would maybe see 70 mph IMO.

[beerock]

hmm i thought i saw in atv wheel action stock speed was 72?

[YFZRob]

Maybe with a brand new quad, 100 lb rider, going downhill, with a tail wind, on a good day :D

[MR.BIG]

Top speed on a stock 250r is 72mph! A 400ex will do about 65 and they 250r is a lot faster on topend.

[Eddiesanders250]

yfzroba are you saying that a 250 will go 60 tops bone stock? a stock 400 will do 65 and a 250 is faster. maybe your just sayin that a 250 will go 60 cus you have a yfz.

[1988R]

Did ya also notice that he has an 88 250R

[beerock]

Originally posted by MR.BIG
Top speed on a stock 250r is 72mph! A 400ex will do about 65 and they 250r is a lot faster on topend.

im too damn lazy to search for this, and i cant find my 250r,banshee, raptor 400ex shootout mag.

but im pretty sure its 72

[NEPA250R]

Not that I care about top speed, but my 87 250R (stock pipe and gearing) hit 69.4 mph @ 9000 RPM's on a Factory Pro EC997a eddy current dyno. Also, it peaked at 26 hp/ 19.5 ft/lbs @ 7000 RPM's.

[YFZRob]

Eddiesanders250, you've really got to start reading people's posts. :p

Again, my bone stock '88 R couldn't even think of shaking my friend's Z400 in both acceleration and top speed. The stock R is VERY unimpressive. Granted I had a 12 tooth front sproket, which would have killed at least 5-8 MPH, so regarding what NEPA250R got out of his which was on a dyno where there's no wind drag or rider drag, or lack of traction like in dirt, a stock R would be lucky to see much more than 65 mph....mine high 50s to low 60s with the 12 tooth front.

[1988R]

I don't know what to tell you YFZRob. I ran a Z400 with my R and was side by side with him. All I really had was a PTR type 6 pipe and a reed cage. He had full exhaust and a cam. Also there was about 80-90lb difference in rider weight with the advantage going to him

[JTRtrx250r]

I got a buddy w/ a Z and he hangs next to me till I hit 3rd-4th gear then its by by, Im runnin 13-38, but I still am w/ Rob on this topic, just dont see it happen very often w/ those kinds of excessive speeds on a stock cyl'd R.

[LT250Racer609]

Originally posted by YFZRob
70ish bone stock is not possible. Maybe with all the bolt-ons and stock porting it could be possible. When my R was bone stock except for a 12 tooth front sprocket (I know, lower than stock gearing), my friend was all over me trying to pass while I was pegged in 6th gear. He was on a 13 tooth (1 less than stock) Z400 with bolt-ons. With a GPS, he normally sees mid 60s. It wasn't like he slowly was creeping up on me either, he was glued to my rear bumper trying to find a way to pass. I'd have to say high 50s, MAYBE 60 BONE stock. But again, bigger carb, pipe, silencer, good condition top end, and a modified stock or aftermarket head would maybe see 70 mph IMO.



yah my 250r quad was like that to my dads 250R ..i was glued to the back of him...were runnign 14 front and 38 rear...im not stock but he is and come to find out....we rebuilt his motor a week later and he was running on one worn to hell ring....soooooo i would hafto say that your wrong and a stock geared 250r in comp. stock form u will see low 70's like everyone else is saying

[YFZRob]

I don't understand the problem in understanding this......

I had a 12 tooth front sprocket which will kill a good bit of top speed. I was also on DIRT! I don't care how hard packed dirt is, you WILL NOT GO THAT FAST on dirt. My YFZ will do 77 mph on pavement, but only 69 on hard pack and grass.....and 65 in loose dirt (all measured with a GPS) Maybe a stock R can do 70mph, but not on normal off-road conditions. I had 165 psi of hot cranking compression, so my motor was fine, but BONE STOCK.

After reading NEPA250R's post, how can you assume that a bone stock R can go over 69.4 mph at BEST. On a dyno there are a lot of conditions like terrain and wind, AND rider weight taken out of the equation, making for a much higher speed than in real world off-road conditions.

HP with the right gearing equals top speed. If full bolt-on YFZ can only see 77 mph, which is with 15/38 gearing and no where near hitting the rev limiter, which is also making nearly 50 WHP, how can a 26 HP bone stock R even get close to that?
They are only around 35 lbs lighter, and the final STOCK gearing 13/38 w/ 20" tire in 6th gear, will put the motor to 9000 RPM at 69.4 mph. I don't know about you, but I have never seen a BONE STOCK 250R make much of any power at or above 9000 RPM.



All I really had was a PTR type 6 pipe and a reed cage

That alone will give you at LEAST a 15-20% HP bump and give you a LOT more HP at high RPM. My friend's Z400 w/ bolt-ons and a 13 tooth front sprocket (A VERY popular mod, probably on your friend's Z400 too) tops out at 65 mph (measured with a GPS) on dirt. It did 69 mph when bone stock with the 14 tooth front.

Again, I only had a 12 tooth front sprocket (no clue why I have to keep repeating this), so I would be a good 5 MPH slower than a stock geared R. My GPS read 59 mph, although I wasn't pegged for a mile, so I may have gotten 1-2 mph more when the wind shifted :rolleyes:

When you guys can confirm 72 mph out of bone stock 250R, please show me a photo of the GPS that gave you that reading! The only problem is that I don't know anyone who has a bone stock R. A PIPE DOES NOT COUNT AS STOCK. A pipe provides substanital % HP gain. 26 HP stock, 30-31 w/ a pipe....that's nearly 20%!!! Of course it will be faster than stock....by a good bit.

[bananas]

GET A NEW GPS...

[YFZRob]

PROVE IT.... :blah:

[NEPA250R]

I agree that it would be unlikely to see a stock 250R reach 70MPH on anything other than pavement or a dyno.

[Quadman250R]

Originally posted by JTRtrx250r
I got a buddy w/ a Z and he hangs next to me till I hit 3rd-4th gear then its by by, Im runnin 13-38, but I still am w/ Rob on this topic, just dont see it happen very often w/ those kinds of excessive speeds on a stock cyl'd R.

My dads Z hangs with my R till about 3rd gear like you said, and yeah its by by. but after this weekend it will be put back together with a new pison bored .80 over and some pro series reeds. i dont think he will keep up no more once i hit about second, lol.

[beerock]

damn somebody please find the old shoot out to put this to end

rob a 12 tooth front sprocket will kill the top end alot.

[JTRtrx250r]

Originally posted by beerock
damn somebody please find the old shoot out to put this to end

rob a 12 tooth front sprocket will kill the top end alot. LOL, hear that Bee':D Guess my 1st post wasn't too far off haha

here, this will help(Thanks to Rico's site;) )

http://home.earthlink.net/~gellett/250r.htm;)

[Doak450r]

Originally posted by YFZRob
I don't understand the problem in understanding this......

I had a 12 tooth front sprocket which will kill a good bit of top speed. I was also on DIRT! I don't care how hard packed dirt is, you WILL NOT GO THAT FAST on dirt. My YFZ will do 77 mph on pavement, but only 69 on hard pack and grass.....and 65 in loose dirt (all measured with a GPS) Maybe a stock R can do 70mph, but not on normal off-road conditions. I had 165 psi of hot cranking compression, so my motor was fine, but BONE STOCK.

After reading NEPA250R's post, how can you assume that a bone stock R can go over 69.4 mph at BEST. On a dyno there are a lot of conditions like terrain and wind, AND rider weight taken out of the equation, making for a much higher speed than in real world off-road conditions.

HP with the right gearing equals top speed. If full bolt-on YFZ can only see 77 mph, which is with 15/38 gearing and no where near hitting the rev limiter, which is also making nearly 50 WHP, how can a 26 HP bone stock R even get close to that?
They are only around 35 lbs lighter, and the final STOCK gearing 13/38 w/ 20" tire in 6th gear, will put the motor to 9000 RPM at 69.4 mph. I don't know about you, but I have never seen a BONE STOCK 250R make much of any power at or above 9000 RPM.




That alone will give you at LEAST a 15-20% HP bump and give you a LOT more HP at high RPM. My friend's Z400 w/ bolt-ons and a 13 tooth front sprocket (A VERY popular mod, probably on your friend's Z400 too) tops out at 65 mph (measured with a GPS) on dirt. It did 69 mph when bone stock with the 14 tooth front.

Again, I only had a 12 tooth front sprocket (no clue why I have to keep repeating this), so I would be a good 5 MPH slower than a stock geared R. My GPS read 59 mph, although I wasn't pegged for a mile, so I may have gotten 1-2 mph more when the wind shifted :rolleyes:

When you guys can confirm 72 mph out of bone stock 250R, please show me a photo of the GPS that gave you that reading! The only problem is that I don't know anyone who has a bone stock R. A PIPE DOES NOT COUNT AS STOCK. A pipe provides substanital % HP gain. 26 HP stock, 30-31 w/ a pipe....that's nearly 20%!!! Of course it will be faster than stock....by a good bit.

you dont get it a stock r will do atleast in the high 60's

[Tom TRX250R]

Stock gearing for the R was 72 MPH

I know mine will do at least 80 because I have clocked it before but I do have a little work done to it:devil:

[88350R]

a buddy and I went out riding today and he has a 450R..he just got it a month or so ago so i think its still stock..im not sure. anyways, i was just goin to post that one top end..i pulled him pretty good. donno how fast we were goin but i took him pretty easy.

[E-ATV-Racing]

I see this question alot on many sites. It really comes down to math, and gearing is the limiting factor. A bike can not go faster than the gearing will allow!

Stock gearing 13/39 3.0 ratio
'86 top speed is 69.091 @ 8500rmps
'86 top speed is 73.561 @ 9000rpms

'87-89 top speed is 71.885 @ 8500rpms
'87-89 top speed is 76.082 @ 9000rpms.

Now a stock geared bike will never go any faster than those speeds, and may not even be able to reach those speeds.

If the motor is strong enough to reach the listed rpm's then the speeds will be met. Many conditions limit the motors ability, i.e. hills, wind, weight, track conditions, etc.

I guess all I am saying is that there is no point in to post your bike will do 100 unless you are geared to do a 100. In which case you should say so.

By the way to do 100 you need a final drive ratio of 2.15.
A 13/28 will get you there. You will also need a whole lot of power.

Now for the real question, does it really matter, do you enjoy riding your bike?

[powerslider]

Originally posted by E-ATV-Racing
I see this question alot on many sites. It really comes down to math, and gearing is the limiting factor. A bike can not go faster than the gearing will allow!

Stock gearing 13/39 3.0 ratio
'86 top speed is 69.091 @ 8500rmps
'86 top speed is 73.561 @ 9000rpms

'87-89 top speed is 71.885 @ 8500rpms
'87-89 top speed is 76.082 @ 9000rpms.

Now a stock geared bike will never go any faster than those speeds, and may not even be able to reach those speeds.

If the motor is strong enough to reach the listed rpm's then the speeds will be met. Many conditions limit the motors ability, i.e. hills, wind, weight, track conditions, etc.

I guess all I am saying is that there is no point in to post your bike will do 100 unless you are geared to do a 100. In which case you should say so.

By the way to do 100 you need a final drive ratio of 2.15.
A 13/28 will get you there. You will also need a whole lot of power.

Now for the real question, does it really matter, do you enjoy riding your bike?


The 85/86 engines had taller 5th/6th gear ratio's than the 87-89, 6th gear .884 vs. .920

[ridinredodb]

a stock 250R is said to hit 69-72 mph top speed. the 400ex does 65 and the 250R is faster. there are several guys that have mostly stock 250Rs in our group and i know they will easily do over 60 mph. one of the guys has a 86 250R and all he's done to it is a sparks exhaust. the 450R will do 78 stock and the yfz does 77. i had my 450R at the 1/8th mile drag strip and hit 73 mph and wasnt even close to the rev limiter so i know for a fact the 450R will do 78!

and with a 12 tooth front sprocket your yfz wouldnt even hit 70! h#ll...with that low of gearing your yfz wouldnt do much over 65!

yamaha guys are hard headed. theres no use trying to talk to them.

[YFZRob]

and with a 12 tooth front sprocket your yfz wouldnt even hit 70! h#ll...with that low of gearing your yfz wouldnt do much over 65!

Where did you learn how to read? You're the second person who has posted something out of your arse! Please show me where I said I had a 12 tooth front sprocket on my YFZ.

As for the hard headed....I'm just posting thoughtful variables that NO ONE sees to understand. Saying how other quads were slower and how you think this quad goes this fast, "but I beat him" is a bunch of BS. I have results from a Garmin Rino 120 GPS, this is more accurate than the nonsense that's coming out of some of your posts. How bout someone DELETE this thread or go buy a GPS and find out for yourself. Then you can get back to me with dumb statements like Yamaha guys are hard headed (even though I own a f*cking honda too!) DUHHHHH. Must be the 14 year old kid who asked daddy for a four wheeler for Christmas.....seems to be everyone riding quads these days.

[ridinredodb]

wow, you need to calm down and stop the childish insults.
when i said yamaha people are hard headed, i wasnt aiming that directly at you, i was talking about yamaha people in general.
and where did i learn how to read? what did i read/spell wrong? btw im 19 and graduated from high school.

i dont know where your getting saying that im talking out of my @$$, everything i stated is true. your saying your 250R only goes 57mph and you have a 12 tooth front sprocket on it. they came stock with a 13. and when you stated your R only went 57 you were still complaining how it wasnt running right and was cutting out so you still had some tuning to do at that time.

i see now you have a 310 and you said it would probably out run your yfz.

and one more thing, the reason a bike wont go as fast on dirt/ grass isnt because of traction. its because dirt/ grass have more drag than asphalt or concrete.

[ridinredodb]

"QUOTE"
Please show me where I said I had a 12 tooth front sprocket on my YFZ
.
.
.

i didnt say you did. you said that a stock R will only go 60 tops and your 250R had a 12 tooth front sprocket on it and it wasnt running right.
i was trying to prove that if you put a 12 tooth front on your yfz it wouldnt do much faster than 65.

[YFZRob]

Sorry if I sounded rude, your post just sounded extremely insulting, which made my post seem necessary at the time. I'm the only Yamaha owner posting on here, so it's safe to assume your comment was directed toward me.

As for the sprockets, I pointed out earlier on that a friend of mine's Z400 went from 68 stock to 64-65 with a 13 tooth front sprocket (from 14 stock), so it wouldn't kill top speed more than MAYBE 5-8 mph on an R.

I had my R's tuning bug worked out in a day after I bought it. The day I spent riding it bone stock was a week after this. It was running perfectly at this time. After removing the air box lid, dropping the main one size, and a BR8ES over the 9, the quad was running like new. SO, at the time I only generated 58 mph with a GPS with properly running engine. I am just trying to bring some technical data into the conversation, not just saying things like "I beat so and so's 450R or Z400" when assuming top speed. There are an amazing amount of variables that affect top speed. When virtually all of those variables are removed, you get results like NEPA250R did, 69 MPH at 9000 RPM on a dyno.

Now, it's blazing fast with the 310....probably a faster than the YFZ in a drag race, and most likely on the top end. Plus it's a hell of a lot more fun to ride.....more work, but more fun. Torquey thumpers are easy to ride, but there's just a little part of the riding enjoyment taken out when you don't have a screaming 2 stroke involved.

[ridinredodb]

no ididnt mean to sound offensive but i had to state what i know or my opinions or whatever they are about the 250R.
btw, that is one of the nicest 250R's i have ever seen. awsome find!

[YFZRob]

Okay....again, I apologize for my response.

Thanks for the complements on my R. I've tried to make it as comparible to the new big boys (YFZ and 450R) as possible, yet maintain an overwhelming majority of stock parts. I LOVE the look of a stock R, just needed more power and better suspension.

[beerock]

I just want to point out, the gear ratio of a z 400 and a 250r is completely different. on top of the fact that the R has 6 gears... so there could be a BIG difference. i mean stock for stock there is a big difference, just liek others said, once you get in 4th on a R you just start pulling other bikes. theres a reason for this..

rob you went to the br8es????

hwo come you never mentioned in that post I mean come on, all those guys were battling me about why use a 8 and and it seemed to solved some of your problems....

[YFZRob]

bee,

My reference about the Z400 and others was more based on the difference 1 tooth smaller in the front sprocket makes in top speed, not overall top speed comparisons. And I'm not certain that thumpers' 5th gears are all that much lower than the R's 6th gear. If NEPA250R got 69.4 MPH at 9000 RPM in 6th gear and stock gearing (13/39 on an '87), a stock Z400 going 68 MPH w/ stock gearing (14/40), with about a 9500 RPM max powerband (I think), the final gear ratio should be somewhat close. I'm not saying they are the same just close. Also the main benefit of the 6 speed on the R is closer ratio gearing to help keep the motor in the powerband, not for a monster top end 6th gear. Thumpers don't need as close of ratio gearing due to the low end torque.

Yes, I have been using an 8. I keep going back and forth to try and tell the difference, but so far the 8 is a smoother plug. It definitely helped out on the motor when it was stock. Honda suggesting a BR9ES on a stock motor is a little overkill....goes along with the 20:1 mix suggestion too.

[metalmellinium]

Originally posted by YFZRob
bee,

My reference about the Z400 and others was more based on the difference 1 tooth smaller in the front sprocket makes in top speed, not overall top speed comparisons. And I'm not certain that thumpers' 5th gears are all that much lower than the R's 6th gear. If NEPA250R got 69.4 MPH at 9000 RPM in 6th gear and stock gearing (13/39 on an '87), a stock Z400 going 68 MPH w/ stock gearing (14/40), with about a 9500 RPM max powerband (I think), the final gear ratio should be somewhat close. I'm not saying they are the same just close. Also the main benefit of the 6 speed on the R is closer ratio gearing to help keep the motor in the powerband, not for a monster top end 6th gear. Thumpers don't need as close of ratio gearing due to the low end torque.

Yes, I have been using an 8. I keep going back and forth to try and tell the difference, but so far the 8 is a smoother plug. It definitely helped out on the motor when it was stock. Honda suggesting a BR9ES on a stock motor is a little overkill....goes along with the 20:1 mix suggestion too. How come you own a YFZ and not a 450R? Just wondering is all since you own a 250R

[YFZRob]

Because the YFZ came out first. I've always wanted a 250R...just never could find one the way I wanted it. The YFZ is the perfect quad for almost all forms of riding (especially after throwing Elkas front and rear), and I bought it back in September of 03, way before the 450R came out. I'm not necessarily a Honda freak, I just love the 250R. Actually, now that I think of it, I'm not brand loyal to any powersports company. I've owned a KX-500, KFX-400, YFZ, 250R, and I have been happy with ALL of them.