Used them to help with front spring sag on my 2007 Polaris 800 X2 sportsman. Works good, No cutting required on mine, but on something with some smaller springs it may need to be cut down to size. Added maybe 1/4 inch lift to the front end.
I'm building up a dirt bike for me and my girl to ride together, The yamaha TW200 is a base model bike with no shock options, I took a shot with these wedges, I couldn't be more pleased. 1, they are very flexible, 2, the pocket fit the spring perfect. 3, can be taken in or out without special shock tools. 4, they fit they work. I'm riding 2 grown ups on this bike, it would bottom out with just me on it horsing around. I do drive slower with Di on the back and it doesn't bottom out with the wedges in and it's a good ride.