What are the big diffrences between the two zr 900's?
as far as I know in 06 they went to smaller primary clutch and bigger secondary-cat says the only reason they did this to minimize belt slipage at slow speeds and not for an increase in top mph-also went to ten tooth drivers but I dont know the reason for that.What are the big diffrences between the two zr 900's?[/b]
Everything else equal probably not. Get a set of 10.4 secondary sheeves and an 045 belt for about $350 and your clutching will be just as good as the 06'.Are the diffrences worth 1k?[/b]
Do you think the f7 would get the zr on the top end?[/b]
Gearing is the same on both,, 9T drivers on both,,R2RAllthough I dont have an 06 but going from what you said
smaller primary / larger secondary = would give it better out of the hole more mid snap and a slightly lower top end ( if gearing is the same ) .
ten tooth drivers = would give it a little better top end and overall more gear to the final drive ratio. ( if gearing is the same )
the two above mentioned changes should pretty much cancel each other out in reguards to performance but should increase clutch efficientcy (spelling )less belt slip and better shift out ( both ways )
from what I hear out of all the D.D 900s the 06 is the best stock for stock[/b]