Manufacturer may substitute components with components of equal or greater performance level Features: Lightweight and durable ALUXX aluminum frame features 6061 alloy with single-butted tubes to produce strong and durable framesets Updated flat-bar frame geometry allows the rider to balance efficiency with stability Mechanical disc brakes give you added control on rugged roads and dirt D-Fuse seatpost and suspension fork absorb road shocks and vibrations Compatible with rear racks, allowing for easy cargo capacity NOTICE: Used Bikes and/or bikes purchased online that have been assembled are non-returnable. We strongly recommend that a professional bicycle mechanic properly assembles, repairs, and maintains the bicycle. DICK'S Sporting Goods will provide free in-store assembly service by a certified technician for any bicycle purchased on our website or in our stores (proof of purchase required). If you choose to assemble the bicycle yourself, DICK'S Sporting Goods is not responsible for injuries or damages resulting from improper assembly.