which has more HP the 426 or 450

7 replies to this topic
  • RaptorFla

Posted May 21, 2004 - 09:39 PM


guy's which bike produces more horsepower?? the YZ426 or the YZ450?? also how much HP does the new 450 make???

  • Gordingull

Posted May 21, 2004 - 10:34 PM


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.

  • Satch0922

Posted May 22, 2004 - 02:05 AM


the 426 has more ... I SWEAR >>>I SWEAR !!!!! LOL :thumbsup:

  • b-bike

Posted May 22, 2004 - 04:33 AM


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

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • yzfmxer

Posted May 22, 2004 - 05:37 AM


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:

  • yzf400man

Posted May 22, 2004 - 11:33 AM


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.

  • grayracer513

Posted May 23, 2004 - 09:37 AM


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.

  • Jeffro426

Posted May 23, 2004 - 09:52 AM


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.

Related Content


Is it worth it? (Cam and High compression piston) by macgi77

Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies

Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride

Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.