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  #11 (permalink)  
Old 09-19-2003, 11:57 PM
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Default how much hp do the 125cc dirtbikes put out?

BigScary remember that your rappy is modded quite a bit. Stock for stock the bikes will win the majority of the time
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  #12 (permalink)  
Old 09-20-2003, 12:06 AM
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Default how much hp do the 125cc dirtbikes put out?

Yea ive pulled away from MANY BIKES EASY.. ive beat a piped yz250f ive beat many bikes and a quad will keep up very well on an mx track.
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  #13 (permalink)  
Old 09-20-2003, 04:27 AM
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Default how much hp do the 125cc dirtbikes put out?

i heard the new YZ85 cranks out 23hp! that's probably from the crank, but still... that's a lot for an 85cc motor.

modern 250s crank out 50hp no problem, some almost 60. i wish i had one of those in my quad...


OOOH! my wish came true. [img]i/expressions/face-icon-small-smile.gif[/img]
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  #14 (permalink)  
Old 09-20-2003, 05:27 AM
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Default how much hp do the 125cc dirtbikes put out?

The only stock 250 MX bike to ever dyno at or above 50hp is the 2003 KTM 250SX.
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  #15 (permalink)  
Old 09-20-2003, 11:05 AM
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Default how much hp do the 125cc dirtbikes put out?

I'll bet you guys that the old 490 Yamaha dirtbike will give you all a run for your money, it does go 100+ /mph stock

Patrick
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  #16 (permalink)  
Old 09-20-2003, 11:53 AM
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Default how much hp do the 125cc dirtbikes put out?

Quote:
250two smokes are 48-55rwhp

Sorry but the two smokes are more like 40-45rwhp just like their YZF-CRF counterparts, if you wanna reach 55hp then you are in the 500cc territory...

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  #17 (permalink)  
Old 09-20-2003, 11:55 AM
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Default how much hp do the 125cc dirtbikes put out?

I found a complete running yamaha 490 for 100 bucks and was thinking of maby trying a engine swap on a 250 quadracer. Any one have any tips or coments on this?
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  #18 (permalink)  
Old 09-20-2003, 12:52 PM
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Default how much hp do the 125cc dirtbikes put out?

Me and my friend kevin both ride quads but his dad rides a cr450.... and when we race on concrete or whatever i keep up with it were just even but it will win me somtimes... but man is that a big bike lol
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  #19 (permalink)  
Old 09-20-2003, 01:40 PM
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Default how much hp do the 125cc dirtbikes put out?

Quote:
Originally posted by: Imback
Quote:
250two smokes are 48-55rwhp

Sorry but the two smokes are more like 40-45rwhp just like their YZF-CRF counterparts, if you wanna reach 55hp then you are in the 500cc territory...
Wrong. I had a Rick Petersons Motorsports 285cc kit for my 1999 YZ250. Ported, polished, carb bored, FMF pipe w/ Shorty silencer, etc. That thing was cranking out approx 53-54 hp on 110 octane leaded fuel. It was a monster. The RPM YZ 300 stroker kit puts out about 6 more hp then the 285 kit last I checked. Its easy to get over 55 hp with a 2 stroke mx bike. The 285 kit only cost me about $700. Thats with everything...bored cylinder, all cylinder and head mods, powervalve mods, new wiseco 285 top end kit, gaskets. etc
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  #20 (permalink)  
Old 09-20-2003, 02:14 PM
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Default how much hp do the 125cc dirtbikes put out?

I believe they were talking about stock quad hp..........
there is on doubt in anybody's mind, in this forum, that you could get 60hp outta a mx bike with big bore kit..........
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Old 09-20-2003, 02:14 PM
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Tags
100, 125, 125cc, 700, 80cc, big, bikes, bore, cc, dirt, engine, give, hp, pipe, put, yamaha



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