I have a red Brodie Threat hardtail. 24" tires. Disc brakes front and back. Bash guard on front bracket. Currently set as a 14 rate but could possibly alter celebration guard to big bracket to make a 21 if wanted. Great mechanical problem. Common paint chips due to storage space and use. Bike has been remarkable. Just upgraded to a bigger bike for my kid. Shimano components throughout. $400 OBO.