Mercury - Gen II Throttle and Shift 22 Ft Mechanical Control Cable 8M0085121. The Mercury Gen II throttle and shift cable is designed for Mercury mechanical control systems that require additional reach for longer helm layouts. It is commonly used on wide center consoles or routing paths where tight bends are not practical. The 22-foot length allows the cable to remain relaxed and properly supported through the rigging path, helping maintain smooth, steady, and predictable control at the helm on