Rancho RS5000X Rear Shock Absorber for 2004-2012 Chevrolet Colorado & GMC Canyon (RS55325)

Fits select 2004-2012 Chevrolet Colorado and GMC Canyon models (All Trims).

The Rancho RS5000X series redefines twin-tube shock performance for your truck. Engineered with exclusive Cross Tuned technology, this rear shock features a unique progressive engagement valving system that remains supple during low-speed impacts while providing the necessary firmness for aggressive handling. To ensure consistent performance under load, the RS55325 is pressurized to 150 PSI with nitrogen gas, which minimizes air-to-oil mixture and prevents damping fade during heavy use.

Built for the rigors of on- and off-road driving, this shock features a 16mm nitro-carburized piston rod for superior corrosion resistance and a 35mm sintered iron piston for structural integrity. The all-weather fluid allows for consistent operation in extreme temperatures, while double-welded loops at stress points ensure long-term durability.

• MPN: RS55325
• Valving: Progressive Engagement Valving (PEV) for custom-tuned damping
• Piston: 35mm sintered iron with fluon banding for smooth responsiveness
• Piston Rod: 16mm nitro-carburized for scuff and corrosion resistance
• Gas Charge: Nitrogen gas pressurized to 150 PSI to reduce foaming and fade
• Body Design: Large twin-tube body for increased fluid capacity and cooler operation
• Operating Range: Withstands internal temperatures from -40°F to 248°F
• Included Hardware: Polyurethane rebound bumper, rubber bushings, and polyvinyl protective boot