HONDA “SPORT” ATV PERFORMANCE SPECIFIACTIONS COMPARISON


250EX 250X 250R 300EX 400EX

Horsepower/RPM 17.6@5.6k 19.2@6.3k 39.8@7.4k 20.4@6.5 29.6@6.8k

Top Speed (mph) 50 52 68 54 65

Engine Size (cc) 229 246 246 282 397

Engine Type 4-stroke 4-stroke 2-stroke 4-stroke 4-stroke

Head/Cam OHV SOHC N/A SOHC RFVC

Valves 2 4 N/A 4 4

Carburetor Size (mm) 22 36 34 32 35.5

Clutch Automatic Manual Manual Manual Manual

Transmission 5-speed 5-speed 6-speed 5-speed 5-speed

Reverse yes yes no yes no

Front Suspension Travel 5.9 6.7 7.9 6.7 8.2

Rear Suspension Travel 5.7 7.9 9.1 7.9 9.1

Dry Weight 349 361 328 377 375

Length/Width/Height 68/42/42 68/44/43 72/45/42 68/44/43 72/45/44

Ground Clearance 5.9 4.9 4.3 4.9 4.3

Rear Tires 22x10 22x10 20x10 22x10 20x10

Electric Start yes no no yes yes

Year of Production 01- 87-92 86-89 93- 98-

 

How did you get all these specs? Do you know specs on ATC 350X[h.p.,topspeed,susp. trav.]? I don't want to be picky,but a 250R is not an SOHC and does not have four valves. Just kiddin' around. Great post!

 

Also, the 250r has a 34mm carb. Are those HP ratings at the rear wheel or at the crank? 40 HP sounds a little high?
ERIC

 

All of those numbers appear to be at the crank It is common knowledge after seeing countless dyno graphs over the years that the stock 250r had right around 29-32hp. Years ago, I looked into a 300ex (only 282cc) and it has about 13hp and they hav'nt changed. Good info still.

 

If I missed the response, please direct me to it. Someone asked about the source of the information. I would be interested in where the horsepower data comes from (not that I doubt it).

Useful and interesting information.

Someone else already mentioned the 250R is a two-stroke, with zero valves and no cam of any sort; you could use the "Edit" button and correct the otherwise excellent chart.

Diogenes

 

nice chart..you should cook up some HTML and put it on a page

 

Uhhhhh, excuse me, but 2 stroke engines do not utilize cams, so you may want to edit out "SOHC" under the 250R engine. I'm not trying to be smart here, but we don't want such misinformation propagated now, do we??
Rest of the chart looks good, at first glance. Nice job.