Shock Absorber B6 Rear GM 2500/3500 HD

The Shock Absorber B6 Rear GM 2500/3500 HD from BILSTEIN is purpose-built for heavy-duty trucks that demand superior damping control and load-carrying stability. Designed specifically for General Motors fullsize trucks from 2011–2022, this monotube rear shock addresses the real-world challenges of towing, payload capacity, and rough terrain. Whether you're running a work truck, hauling a trailer, or navigating backcountry roads, quality rear shocks are non-negotiable for vehicle control, tire contact, and occupant safety.

BILSTEIN's B6 4600 Series monotube design uses a single pressurized chamber to manage both compression and rebound, eliminating the harshness associated with traditional twin-tube units. The steel construction with distinctive yellow paint finish resists corrosion and withstands the thermal stress of repeated cycling under heavy loads. Monotube shocks also deliver faster response times and more consistent damping across varying suspension angles—critical when carrying weight near the truck's rear axle or negotiating uneven ground. The gas-charged design maintains consistent ride height and prevents fade during sustained off-road use or highway towing.

Mechanics and truck owners working with 2011–2022 GM Silverado and Sierra models in the 2500HD and 3500HD weight classes will find this rear shock an essential upgrade for worn or failing OEM units. Installation is straightforward—a single rear shock per side—making it an efficient maintenance or modification task. For those running extended warranties or frequently towing, pairing these shocks with quality front units ensures balanced suspension geometry and predictable handling across all load states.