SO HERE IT IS"
HP information is per EPA’s regulations. EPA site: http://www.arb.ca.gov/msp…v_comply/2013/2013.php The EPA/carb readings may be a bit off, but most manufacturer statements are usually at or below the EPA read outs. So at best the EPA readings may be a bit higher than actuality. This is horsepower at the crank, not rwhp. To find HP ratings for different models, simply change the "/2013/2013.php" at the end of the site to your desired year. If you are looking for a 2006 Honda Foreman 500, then you would input "/2006/2006.php" at the end of the url, and find the 475cc Honda ATV engine listing. You’ll have to know/guess your engine displacement if you don’t know it already. There are many makes and models of ATVs included in this… from Arctic Cat to Yamaha.
I’ve included most of the popular models. If there are any errors, then let me know and I’ll update the chart. This is from the most up to date models I have available (most up to 2013 unless otherwise stated). I’ve round HP up to the nearest half, and ratio to the nearest tenth. The ratio given is the lowest possible for the model in question (usually in 1st gear and/or low range).
Now, the little chart itself:
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Make/size Horsepower Lowest ratio (final:1)
Recon 250 15.5 HP 36.8
300 Fourtrax (after 1988) 16.5 HP 55.0
300 Fourtrax (1988) 18 HP 55.0
350 Rancher 21 HP 54.1
350 Foreman 24.5 HP 57.2
400 Foreman 21 HP 56.9
420 Rancher FM/TM 26.5 HP 46.5
420 Rancher AT (IRS) 27 HP 38.8
450 Foreman 24 HP 56.9
500 Rubicon 33.5 HP 58.6
500 Foreman 27 HP 51.0
500 Foreman (FI) 28 HP 53.4
650 Rincon 35.5 HP 17.7
680 Rincon 38.5 HP 17.7
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