Kalvin 9 Rainmaker Kalvin 9 Rainmaker Vital MTB Play Again 9 year old Kalvin Winder, shredding Trestle Bike Park's "Rainmaker" in Winter Park, CO. Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter kkwinder 10/24/2014 2:06pm Share to Facebook Facebook Facebook Share to Twitter Twitter Twitter Related 0 comments Sort: Newest FirstOldest FirstPopular To post, please join, log in or connect to Vital using your Facebook profile Login with Facebook.