The Maxxis Maxxcross MX‑SI Rear Bias TT tire is a motocross/off‑road rear tire engineered for intermediate‑to‑hard terrain. It uses bias‑ply construction, requires a tube (TT = Tube‑Type), and is built with a reinforced carcass for durability, traction, and predictable handling on demanding surfaces. The MX‑IH is the rear‑specific companion to the MX‑IH Front tire, forming a matched set for motocross and off‑road motorcycles.