Actually a modern 125 turns out "way less" torque than a typical 400EX... Typical 125 peak torque is around 15 ft/lbs where a 400EX is typically around 22 ft/lbs. A 400EX also produces "peak" torque over a much more broad range of RPMs than a 125....

The reason a 125 will outrun a 400EX in the straight line is simply the hp/weight ratio...

Also the HP and torque numbers for even a brand new 83 CR125 are far different than those of a modern CR125...

 

How many hp does a 400ex make? I thought 25.

 

The scrambler 400 can beat a 400ex in a drag, whats the point of putting a CR125 against it if the scrambler would give it a better run for it's octane.

LONG LIVE POLARIS!!!

2000 SCRAMBLER 400 2X4

SCRADADDY400

 

Depends on the dyno run you look at.... I've seen quite a few and they typically average about 27...

Typical 125's run about 30.

 

I was going to address your ignorant comment, but decided against it, as it's only purpose was to illicit a response....

Good day, Scrambler troll.

 

Last time I checked a 400EX put out roughly 27 HP and a '00 YZ 125 (I know its not a CR) put out 37'38 HP. So yea, CR would win.

 

No way, 37-38hp??? That must be at the crank or something because that sounds way too high. I thought the 250s from the factory only put out about 45hp, and that's with double the cubes!! The EX puts out 32hp at the crank, and 27hp of it gets to the rear wheels. Here's a dyno run of a bone-stock '99 RM125, that can't be too different than the YZ and CR, can it?
http://www.geocities.com/~gtthunder/billspipe2.jpg

 

Gabe I was'nt trying to start an arguement.

2000 SCRAMBLER 400 2X4

SCRAMDADDY400

 

The title for my '99 CR125 lists horsepower at 38.5.

 

Here's some numbers for you... These are from '99 model bikes. The weights are from a certified scale and the HP is rear tire from a Dynojet:

MX BIKES - WEIGHT(HP)
-------------------------------
HON CR125 - 207(29)
KAW KX125 - 210(28)
KTM 125SX - 212(29)
SUZ RM125 - 212(29)
YAM YZ125 - 213(31)
HON CR250 - 222(40)
KAW KX250 - 230(41.5)
KTM 250SX - 229(38.5)
SUZ RM250 - 233(42)
YAM YZ250 - 228(42)
HON CR500 - 233(56)
KAW KX500 - 233(55)
KTM 380SX - 229(49)
YAM YZ400 - 249(43.5)
HSB FC400 - 244(42)
HSB FC501 - 244(46)
HSB FC600 - 244(48)

ENDURO BIKES
-------------------------------
KAW KDX200 - 238(26)
KAW KDX220 - 238(27)
KTM 200EXC - 228(33.5)
KTM 250EXC - 238(37)
KTM 300EXC - 238(41.5)
KTM 380EXC - 238(47)

FOUR STROKES
--------------------------
HON XR250 - 246(23)
YAM TTR250 - 265(21)
KAW KLX300 - 248(27)
SUZ DR350 - 273(28.5)
HUS TE410 - 268(36)
HON XR400 - 264(33)
HSB FE501E - 270(46)
YAM WR400F - 268(42.5)
HUS TE610 - 268(40)

Nuff said?