I just bought a 2006 Kawasaki 750 Brute Force. After approx 150 mi break-in period I decided to see why I bought this thing.
What a dog. Top speed on gravel road was 62 mph and top speed on blacktop was 64 mph.
I complained to the dealer and they were also surprised. They had been telling everyone that bought this machine that they could expect 70-75 mph.(Which is consistant with published reports I've seen.)
I called Kawasaki Management and they were satisfied with that performance.
Does anyone think that the carb modifications for the 2006 models to allow for better starting hurts the performance?
I would love to hear actual digital speedo readings from other 2005 and 2006 750 Brute Force riders.

Thanks in advance ,
dgrozzy

 

On pavement with the stock tires I would see 72mph at about 65 degrees and about 1400 feet elevation. I just did a couple of high speed runs over the weekend with 25" Bighorns at 8500 feet elevation and only saw 61 on the speedo on a section of straight gravel road. I did not rejet for this elevation. You should see something around 70 at standard temperature and pressure. Standard temperature and pressure is about 70 degrees at sea level. As you increase elevation or raise the temperature performance will degrade somewhat. Bigger tires also effect top speed.

 

well, that doesnt sound right. my grizz does 63 np (could go higher but it takes a lil while after that)... and the bf is supposed to be really fast for a ute. i hope u find out wats wrong. good luck!

 

Get a GPS to tell your actual speed then see if you have something to complain about. Has anyone GPS'd a "70mph" machine to see what is is really running?

 

I used a Garmin etrex vista when I checked mine with the stock tires. My speedo was a little optimistic. Quad speedo said 72, GPS was reading 69 the last time I was checking speeds. It's a little imprecise because it takes a little time for the GPS to catch up. If you can't maintain the speed for 15 seconds or so you might not get an accurate reading. Elevation, ambient temperature, tires, jetting, road surface, wind direction, size and weight of the rider all play rolls in the top speed numbers. I have measured 72mph with my GPS on pavement and I know some people have seen numbers even higher with ideal conditions. I have also seen my top speed as low as 60mph at high altitudes on warm days and on gravel roads.

 

My '05 is all stock (so far) except a Warn winch kit on the front, and it'll do 69-70 mph per the digital speedometer. I have verified this to be pretty accurate with a handheld gps. I know one thing, it'll easily catch up with my buddy's '05 Griz (not knocking it - the Griz is a fine machine!) and walk right away from it. I'm far from an expert, but I suspect you are not jetted correctly. I have a Dynojet kit for mine, but haven't installed it yet. I expect a lot more low-mid range power if I can get it dialed in; however, it will pull a wheelie with minimal effort now when you have the tranny in low range. More than enough power to get someone like me in a LOT of trouble! [img]i/expressions/face-icon-small-happy.gif[/img]

 

well i had my warrior at 70 and i never ever ever ever ever lost to a bf750.

 

My BF will do 71 mph at 4800 elev it takes a bit to get it up that high My KQ will do 72mph when the rev limiter kicks in and beat my BF to top speed I do have to say that the BF will get it off the line but the KQ will catch and pass the BF

 

With the stock tires, mine hit 70.5mph by a garmin GPS.

 

My old 400ex would go 92mph and pass a BF750..........
























On the back of my truck right before speed limiter kicked in! LOL! 62 or 72 mph on a big ole' Brute Force is scary fast considering what a sizable machine they are! Impresseive to say the least!

One side note: EVERYONE: Please be careful on your top speed runs, as a good friend of mine that I raced with took a bad spill for an unknown reason two years ago on his race quad doing a test run down a dirt road at approx 70mph, and was found laying in the middle of the road bleeding from the ears. He was lifeflighted to a nearby trauma unit from our ride area. He bruised 3 out of the 4 lobes of the brain, and has residual problems (brain functions) to this day that will be permenant. He was wearing full race gear at the time of the accident too!

Please have fun, but be careful![img]i/expressions/face-icon-small-wink.gif[/img]