Product information updated on 2021-08-25, Manufactured by BellTech - Part Number Belltech 6521, 2007-13 Silverado/Sierra All Cabs 5 inch-6 inch Rear Drop , Fit 2wd or 4wd. 2007-13 Chevrolet Silverado/Sierra All Cabs 5inch-6 inch Rear Drop-Flip Kit Requires shorter shocks., Belltech Rear flip kits are engineered for each individual application, to relocate or “flip” the trucks axle from underneath the leaf spring pack, to on top of the leaf spring pack. This brings the axle and the wheels closer to the truck frame, lowering the rear of the truck up to 7”. Each kit is manufactured with high quality steel and feature a durable powder coated finish and Grade 8 hardware. A Belltech C-Notch is included in most Rear Flip Kits.