Product information updated on 2021-08-25, Manufactured by BDS Suspension - Part Number BDS:121407, 2001 to 2010 Silverado/Sierra 2500/3500 HD Recoil Mounting Kit, , RECOIL Traction Bars BDS Suspension introduces a revolutionary spring loaded traction bar system engineered to improve traction and limit axle wrap without negatively affecting suspension travel or ride quality. These next generation RECOIL traction bars