Is there a way to change just 5th gear or add 6th? I have an 07 450 plated. I am happy with 1st - 4th and the only time I use 5th is on the road. I feel like I am winding up the rpms a bit much while commuting between trail rides. I am running 14/50 on the final and do not want any higher 1st gear actually sometimes I would like a lower 1st eaven with the Revloc clutch. Currently the top speed (rev limiter) of the bike per GPS is 87-89 mph and the factory spedo says 94 mph. I normally commute 15 miles @ a top speed of aprox 70mph. It just seems to be screaming for mercy at that speed. In the trails I am in 1st, 2nd and 3rd and rarely 4th but have yet to need 5th.