The 2003 CR 450 suspension is improved over the 2002 model. The shock action is very similar to the 02 except the initial ride height of the rear is taller. This taller ride height keeps the rear up higher in the stroke and makes it turn better and feel like it has a stiffer shock spring in the rear. By the way the shock spring rate is not stiffer this year like the magazines say. It is the same as the 02 and equals about 5.3 kg/mm. (Note: For 2002 models we have been lengthening the shock shaft all along.)
The 2003 CR 450 forks have dramatically different compression valving than the 2002. For faster riders it is too soft and tends to blow through the travel on jump take offs and landings (low shaft speed valving). At the same time the forks will feel stiff on sharp edges (high speed valving).
The shock characteristics are similar to the front but not as pronounced. The compression valving will make the bike wallow and feel soft (low shaft speed valving) in the rollers and feel stiff for many riders in the high speed chop exiting turns. Shock rebound is too fast at the top of the stroke and/or too slow at the bottom. If the rebound is adjusted properly to control rebound from full compression, the rear will pack and feel harsh in many parts of the track. If the rear is sped up to follow the terrain and not pack, it will kick out sideways when you least expect it, especially on down hills.
The interesting thing about the 03 is that many riders are confused because it bottoms in some sections but will feel harsh in others. This classic complaint comes from a suspension which is too progressive. (Not enough damping at slow shaft speeds and too much damping at high speeds.)
21 years of experience and twice weekly riding sessions provide the experience to successfully revalve this excellent bike.
Call me to discuss your particular complaints!