Tire Duro 26" x 2.125" Clay/Clay Side Wall HF-133. Tire Duro 26" x 2.125" Clay/Clay Side Wall HF-133. Tire Duro 26" x 2.125" Clay/Clay Side Wall HF-133. We carry over 3,000 bicycle parts and accessories. If you have any questions about any of our parts, please send us an email. sold 1 each