B BM1-Bike Chimp Mar 10, 2014 29 1 Jul 21, 2014 #1 Zink wants to break the Guinness World Record for the longest dirt-to-dirt mountain bike backflip. News: Cam Zink to attempt 100-foot backflip
Zink wants to break the Guinness World Record for the longest dirt-to-dirt mountain bike backflip. News: Cam Zink to attempt 100-foot backflip