Ridetech frame C-notches for 1999–2006 Silverado/Sierra 1500 2WD are powder-coated satin black reinforcements that include a pair of notches, a cut template and hardware. They are offered to provide the necessary clearance modifications for lowered rear suspension setups and are presented as a vehicle-specific kit intended to be used where frame clearance adjustments are required during lowering projects.
Ridetech 99-06 Chevrolet Silverado 2WD Frame C-Notch Kit