Trek 4300 Hardtail Mountain bike 21 speeds 26" tires, Frame Construction TIG-welded, Frame Material Alpha aluminum, front suspension SSync 266, Rear Derailleur Shimano Acera, direct linier pull brakes, Shimao Trigger Shifters, Rear Cogs 7-speed, 13 - 28 teeth, tires are 26", Everything works, 13" frame - call or text 530-3two1-9229 mike