And with the 21-speed gear system, SRAM grip shifter, and rear derailleur from Shimano, you never have to worry about performance on paved as well as rough streets. Also, with the 21-speed gear shift system along with its lightweight frame, riding uphill will never be a problem. However, unlike the mountain bike, the hybrid most… Continue reading Schwinn DSB Hybrid Bike, 700c wheels, 21 speeds, mens frame, grey Schwinn DSB Hybrid Bike, 700c wheels, 21 speeds, mens frame, grey 10235977