CARLI SUSPENSION 13-22 RAM 3500 4X4 FABRICATED LEAF SPRING SHACKLE

The rough ride of the 3500 rear can be attributed to the factory vulcanized bushings in the leaf spring pack and shackle. Although the factory shackle is strong, its design doesn't lend itself to a smooth ride. This is understandable since the 3500 is meant for towing, not a comfortable ride. The 3500's factory leaf springs are designed for high-spring-rate and short-travel, so it's not surprising that Ram didn't prioritize a shackle that offers a smooth ride and extended suspension travel. Vulcanized bushings, which are often used by OEMs, involve the bushing material being adhered on both contact points through a press-fit process.