Experience the quietest and smoothest tow possible thanks to a wider stance, tighter tolerances, and industry-leading shock dampening system. You might forget you're even towing! Highest Standard in Testing: The Reese M5 is backed by a limited lifetime warranty and is compliant with SAE J2638 – The highest standard in the industry! By combining the latest in technology, rugged endurance, and sleek design, the M5 continues the Reese legacy of Pioneering Performance.