I have no complaints on how the sportsman runs, but myself being a gearhead, and having a buddy with a 660 grizzly who just nicks by me in the end of a race everytime, i need any information possible on how i can upgrade my performance, clutch springs/weights, intake, exhaust, anything u no of and anywhere i can find it would be much appreciated

thanks
dave

 

dont know about the late 700's but they were replacing the exhaust header pipe w/ the 800's as it was a bigger hole and also the air snockel for more air to get in. clutch from a 800 was a improvement as well. maybe an offset timing key to advance the timing a little bit. just a couple of idears. maybe someone esle can chime in that knows for sure.

 

There are some aftermarket performance places like Aaen, Hotseat, Bikeman

http://www.bikemanperformance.com/


http://www.hotseatperformance....uct_ID=3529&CATID=248


http://www.aaenperformance.com/ATV_Home.asp

 

Hmmm. I have a bone stock '07 Sportsman 700 EFI, and my brother in law has an '06 Grizzly 660 with an aftermarket clutch kit in it. After every drag race, mud run, or gravelpit wall climb, I come out ahead of him by a length. REALLY pisses him off. AND I out weigh him by 30 lbs. I don't know why the guy with the grizzly is beating you.

 

When machines are built there are alot of variables. You can take 2 sp800's against each other and 1 will consistantly do better.
If you look at the dyno graphs that are om the Aaen vs Bikeman links the HP numbers are 4-5 different stock.