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RaptorFla

which has more HP the 426 or 450

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The 450 ofcourse, I'm not sure how much mure but my dealer told me the engine was making about 60hp, so it would be about 50 to the rear tire.

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I can say that I'm POSITIVE my 426 has much more h.p. than my riding partners "Old" (1982) CR-450. :thumbsup:

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well,

If you look at the GYTR catalog, they have dyno run charts for there pipes, and it looked like to me that the 426 had more HP? but I could have been reading it wrong? :thumbsup:

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I'm going to have to say the 450. becuase generally the more displacement the more ponie sthere are. i dunno how much more though.

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YZ450s produce between 49-51.5 HP in stock form, based on published dyno charts. YZ426s run between 46-48. The best improvement in peak power I've seen in print for an exhaust system on a 450 was 1.5, although there were some that spread the power out quite a bit.

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Its really not about horsepower in either case...both bikes are very fast, and i feel the 426 has a snappier mid-top end vs the 450. What makes the 450 "feel" faster is its flatter torque curve and reduced weight.

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