GM 4x4 Van Bump Stop Kit

Description: The GM 4x4 van bump stop kit is crucial for optimizing GM IFS system performance in your 4x4 van conversion. We offer three options: 0-3" lift torsion bar, 5-6" torsion bar, and a 5-6" coilover option with a rearward seat and bolt-in strike pad. Why: Bump stops on GM IFS vehicles serve two key purposes. Firstly, they act as a secondary damper for the torsion bar design, countering its natural "pogo" effect for improved ride quality. Secondly, they prevent harsh bottoming out and tire-body contact which is especially important due to GM vehicles' close-fitting fenders. (This is the same reason you'll see significant lift requirements on GM pickups to increase tire size just slightly.)  Our Design: Timberline GM 4x4 conversions require replacing the lower control arms with a Silverado-style arm. This entails re-articulating/positioning the bump stop, done as one of the final steps after leveling, settling, and aligning the vehicle. This ensures precise and effective function