Manufactured by Fox | 88306135 | 2007-18 Silverado/Sierra 1500 with 4 inch lift Fox Coilover w/DCS adjusters, , 2.5-inch smooth bore zinc plated seamless steel body. Zinc-plated and double-clear coated for long lasting finish. Black-anodized, CNC-machined 6061-T6 billet aluminum. Application-specific, adjustable 3.0 Eibach® racing springs. 7/8-inch hard chrome-plated steel shafts. Application specific valving to maximize performance. Product information updated on 2024-12-09. This product can ship by Truck Freight