Hayman Reese Weight Distribution Kits Hayman Reese Weight distribution, set up correctly, ensures the ball weight stays the same, yet the load is evenly distributed across all axles. This means the vehicle is then restored to its correct operating balance, carrying the load, instead of dragging it; in turn decreasing the risk of undue wear and tear. Visit the Hayman Reese website to learn the 3 steps to choosing the ideal kit for your needs. Classic or Standard? Both kits improve safety, control, handling and comfort when towing, however, each kit has been specifically engineered to suit individual needs. Classic kits are best suited to Caravans, Camper Trailers and Trailers that have a 4" high a-frames, or 5'and 6" high A-frames where the coupling is positioned at the bottom of the A-frame. Standard kits are better suited to Camper Trailers, Trailers and Caravans that require more clearance around the A-frame base. Just right for 5" or 6" high A-frames with the coupling position in the middle or top of the A-frame.