I had Leary's Shock shop in Colorado revalve my QA1 doubles. Quick turnaround, dyno sheet, and good price. 120.00 for both, and about a week and a half later I had them back. They will go a lot further than most give them credit for. I'm definitely going to give them a thorough test when mine gets done. May end up going to something different, but I will at least try them out first.