Replaces worn or damaged drive belts for a starter box system, ensuring the starter mechanism continues to operate smoothly when cranking engines. These HTD‑3M‑213 belts are sized for compatibility with specific off‑road starter boxes, helping maintain reliable gear engagement during use. Supplied as a pair, they allow you to replace both belts at once for balanced performance. Durable construction resists wear from repeated starter use and helps keep your RC vehicle ready to go. Suitable for use with compatible ProTek RC SureStart 1/8 scale starter boxes.