King Shocks front 3.0" diameter remote-reservoir coilovers for 2021+ GMC Yukon XL are sold as a pair and include an adjuster with internal bypass valving. The kit is a custom-tuned OEM-performance solution developed through real-world testing to achieve a specified damping curve for Chevy/GMC models. Installation requires aftermarket upper control arms per the product notes.
King Shocks 2021+ GMC Yukon XL Front 3.0 Dia. Remote Reservoir Coilover w/Adj & Int. Bypass (Pair)