Amazon.com
Boasting a full-suspension, extra-strong aluminum frame, the GMC Topkick mountain bike is an ideal choice for both trail riding and rough city riding. The frame employs a floating beam suspension design mated to a Zoom suspension fork with elastomer/spring technology. This gives the bike a smooth, steady performance even on rough terrain. The Topkick’s drivetrain, meanwhile, is outfitted with Microshift push shifters that control Shimano’s tried-and-true TZ-30GS derai (more…)