Originally Posted by acousticrawk
great info. so, then, did they make a spoke rear for dual shock bikes? also, switching to an 18 rear, and a 21 front, do i need to worry about rake and trail being changed to much? I dont fully understand rake and trail.
Yes, all /6 and some later dual shock wheels are spoked. Yes, you're frame geometry will be changing, but wheel size will probably be affecting this quite a bit less than suspension changes. I'm assuming you'll be using longer travel forks at a minimum and maybe a lengthened swingarm, so those will have a much bigger effect on your geometry than your wheel sizes.
Here's some reading for you: