Why is a 2003 f7 so fast?

Answer 1

The F-7 was built from the ground up for speed. The chassis itself was lightened in every area, even the track width was cut down to a little over 13 inches to lighten rotating mass. The 700cc twin engine was designed the same way. For starters, it was designed with the cylinders "laying down in the chassis to keep the weight low. It's power output was 140hp and a little over 100 lb/ft of torque which is more than some 800cc engines made back in 03. Lastly, the 03 and 04 models were specifically faster than 05 and up modes because they used a chain case drive instead of the diamond drive that the later model sleds used. The chain drive was lighter and had less friction than the diamond drive did but was not as quite and required more parts. Hope that answers your question