C-Notch - Bolt in Kit - 67-72 GM C10 Truck

The C-Notch Bolt in Kit for 67-72 GM C10 trucks is a frame-mounted rear suspension modification designed to lower vehicle ride height and improve chassis geometry without extensive welding or cutting. Built by Detroit Speed Engineering, this kit addresses the structural limitations of classic C10 pickups, enabling fitment of modern suspension components and larger-diameter wheels while maintaining frame integrity. Restoration shops, hot rod builders, and truck enthusiasts rely on this proven solution to achieve aggressive stance and handling improvements on first-generation Chevrolet trucks.

Constructed from 3/16-inch steel and finished in natural (bare) material, the C-Notch kit bolts directly to existing factory frame rails without requiring cuts or permanent modifications. The notch design relocates the rear frame section relative to the axle, lowering the truck's center of gravity and correcting the suspension angle for vehicles running lowered springs or air suspension systems. All required hardware is included in this 29-pound assembly, simplifying the installation process and ensuring compatibility with the OEM frame mounting points across the full 1967–1972 C10 model range.

This bolt-in kit is ideal for builders executing a complete chassis upgrade on vintage Chevrolet fullsize trucks while preserving originality and structural soundness. Installation requires basic mechanical skill, a hydraulic press or professional shop equipment, and adherence to torque specifications for all fasteners. The C-Notch kit accommodates popular rear suspension platforms including coilover systems, traditional leaf springs, and independent rear suspension conversions, making it a versatile foundation for both street and show trucks seeking both aesthetic and functional improvements.