Timbren Active Off-Road Rear Bump Stop Kit for Toyota 4Runner (2003–2024)

The Active Off-Road Rear Bump Stop Kit is engineered to improve rear suspension performance on Toyota 4Runners driven through challenging off-road environments. By replacing rigid factory bump stops with progressive Aeon® springs, it creates more controlled suspension engagement during aggressive articulation and heavy compression events.

Rather than delivering an abrupt stop at full suspension travel, the Aeon bump stops progressively absorb impact energy as compression increases. This creates smoother suspension across rough trails, ruts, and uneven terrain.

Reducing harsh bottom-out forces helps decrease the loads transferred into shocks, suspension brackets, and other rear suspension components. This additional protection supports more reliable performance during repeated off-road use.

Smoother rear suspension behavior improves vehicle composure over technical obstacles while helping reduce the harsh impacts felt inside the cabin. This contributes to better control and less driver fatigue during extended trail sessions.

Unlike hydraulic bump stop systems that require seals, fluids, and regular rebuilding, the Timbren Active Off-Road system operates without scheduled maintenance. Once installed, it is ready for consistent performance trip after trip.