It comes equipped with a reliable Shimano GRX 12-speed groupset, durable DT G540 Disc wheels, and Pathfinder Pro 2Bliss Ready 700x38mm tires that grip the roughest terrain. Shimano GRX RX820 front and rear brakes. Shimano Threaded BSA BB bottom bracket Shimano Threaded BSA BB frame with 4-year warranty (I send documentation)