Rockhopper Sport 29 by Specialized. Perhaps you're new to trail biking or just want an upgrade to your bike? Either way, the Rockhopper Sport 29 is the only bike you need to live out your trail fantasies. Featuring corrosion resistant hardware, A1 premium aluminium frame and a custom SR Suntour XCM fork for tactile supension that jumps around on all terrain you'll encounter on the trail. This bike was built on a long term focus on sustained performance, so the bike is built to last, and for comfort, with the new geometry technology used in shaping the bike.