Mongoose R4720Z -Blue and silver frame with black tires. -Alloy mountain bike frame . -SRAM MRX, 21-speed grip shifting . -Three-piece ATB crank . -Element suspension fork works hard to smooth over the bumps. -Artek linear pull brakes with 64 mm pads . -Shimano rear derailleur . -26-inch black tires with brushed side silver alloy rims.
