HP ratings for 426 compaired to 660??
#2
Stock 426 and 450 SMOKE the 660. Not even close. The Raptor is in the 35-38 HP range, the 426 & 450 are in the 52-60 HP range. The Raptor motor is a low compression, low hassle motor. The bike motors are a high compression (12.5 to 1) motor that requires more maintainance and time to keep running at peak power. The bike's FCR carb is also quite a bit more complex than the Raptor's, helping with the high power output. The new WR450F motor in the Raptor frame would be a sweet quad what with electric start, auto de-comp, and a magnesium head to help reduce weight. Are you listening Yamaha?
#4
#5
#7
The 125 two stroke and YZF250 are both about 30HP and the 250 two strokes and YZF426/CR450F are both about 45HP. There are tons of dyno runs on the FMF website. Check them out at fmfracing.com and look for the "Dyno Runs" tab. All I know after riding a piped KX125 is that there's a world of difference between HP and torque when it comes down to how the power "feels." I would never trade the feeling of my stock Raptor's 37HP for the feeling of that piped KX's 32HP.
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