The Joker Machine Custom Billet Derby Cover is a precision‑machined component designed for street‑oriented primary‑drive applications. Constructed from high‑strength billet aluminum, the cover delivers a lightweight yet durable solution that resists the stresses of aggressive riding. Its finned design not only adds a distinctive visual element but also enhances heat dissipation, helping to maintain optimal operating temperatures for the drivetrain.
Finished in a polished chrome and mounted with a 3‑hole pattern, this derby‑style cover offers a secure, repeatable fit on compatible systems. Available in a range of configurations—including 3‑hole and 5‑hole finned options—the chrome version provides a classic, high‑visibility look while preserving the functional integrity required for demanding street performance.