| It does look a bit like pick-up, but I'm sure it wouldn't make such a tidy strip like that.
I had a very similar pattern on my rear at rocky last year... with the help of mr spalding I softened the rebound 3 clicks and changed the pressures to 30f/32r and next session out it was gone.
Don't know if it was the rebound or the pressures that cured it tho! |