Top speed on 2003 700 sportsman
 

45 does not sound good. I would say around 60-65 MPH or so. Depending on conditions.

you should at least pulling a good 60 mph for sure. how many miles on it and have you ever smoked the belt? welcome to the forum.

I agree that you should see at least the low 60's. My 600 will see that number as well. Is the air filter clean I know I had an issue with my 600 once the air filter was packed with dust and dirt and the machine had no top end.....

my 03 sp 400 does over 50 and it only has 2100 miles and its never blow a belt

I can hit 50 on my Hawk on pavement...and its a 300 in high altitude. So yea, u should be getting alot better than 45.
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Make sure you have the carb jet needle (the real long one) clip in the middle position and the spacers in the correct spot. My 2002 was put together wrong and it ran way rich about 40-44 mph max. I bought a manual and i spotted the problem right away. The last guy had the tick spacer inside where the long needle needs to drop in at. In other words the needle was way to high. Runs awesome now. 65 mph...

Wow! 65 sounds radical!
Is your Sportsman bone stock? My 2002, 700 will only hit 50-52 max. with new plugs and everything greased. ;-)

50-52 MPH! My old 89 350 Big Bear would hit 45 mph and my old 450 Honda Foreman could do close to 50 mph. I get 55mph easily with my 500 Sportsman.

It is bone stock. This is speedo speed. I will have to try it with gps. Speedo goes to 60 but it will bury it pretty easy. No idea how accurate though.