The Firestone Ride-Rite All-In-One air helper spring kit for 2001–2010 GM C2500HD/C3500HD helps level loads to eliminate squat and restore designed ride height. This analog AIO includes Ride-Rite rear springs, a single-path compressor, analog backlit gauge that mounts inside the vehicle, and a no-drill mounting plate for compressor and ECU. Rated for 5–100 PSI with a standard-duty compressor and up to 5,000 lb load-leveling capacity, it installs in about 1–2 hours.
Firestone 01-10 GM C2500HD/C3500HD Analog Ride-Rite All-In-One Kit (W217602869)