Gets to 108-109 real fast on the speedometer. On the lake in good conditions I have hit 118-119 MPH. Bone stock 2003 Viper, stock Yokhama track with 96 Woody's studs down the middle. 2300 miles on sled. I have two identical sleds and they are side by side when ran next to each other. In real world speed you have to take about 10% off the speedometer reading. These sleds run real good STOCK! Stays right with RX1's and Warriors. Side by side with the slower 2003 Rev 800's. The new 2006 Rev 800's are alot faster. Look out for the 600 Revs, those sleds can sometime surprise you. They can stay with me, some times I can pull away, and sometimes they can pull away...they are real close. Same goes for the F7's. The first year F7 was fast, after that I can run with them neck and neck.