Belltech C-Notch Kits are bulletproof over-engineered frame modification and reinforcement systems that allow for additional compression or upward travel of your rear suspension, essential in limiting bottoming out. All Belltech C-Notch Kits are manufactured with heavy duty stamped steel contoured to match the factory frame rails. All kits feature a durable powder coat finish and the highest quality hardware using grade 8 fasteners. The best in the business. Period.