Zodiac Pool R0684000 Track for MX8/MX6 - The Zodiac MX8 is ready to battle your pool's toughest dirt and debris. The dual cyclonic suction enables the MX8 to move faster and deliver unsurpassed vacuum power, while requiring 30% less flow. Its ultra efficient design requires less flow than any cleaner in its class for maximum energy savings. Best choice for solar, 2-speed, and variable-speed pumps.