Rancho RS5000X Series Front Shock Absorber for Select 1999-2007 Chevrolet/GMC 1500 (RS55265)

Fits select 1999-2007 Chevrolet and GMC trucks and SUVs, including Silverado/Sierra 1500, Tahoe/Yukon, Suburban/Yukon XL 1500, and Avalanche 1500.

The Rancho RS5000X series shock absorber (MPN RS55265) utilizes advanced Cross Tuned technology and Progressive Engagement Valving (PEV) to bridge the gap between street comfort and off-road control. This nitrogen-gas charged twin-tube shock is pressurized to 150 PSI to minimize aeration and foaming, ensuring consistent damping performance and reduced fade during intensive use. Designed for durability and precision, the application-specific piston is custom-tuned to regulate fluid transfer and absorb impacts without disc flutter.

• Cross Tuned Technology: Features a unique rebound valving system and advanced compression phase for improved handling on and off-road.
• Heavy-Duty Construction: Engineered with a 16mm nitro-carburized piston rod to resist scuffs and corrosion, plus double-welded loops at high-stress areas.
• Precision Piston: A 35mm sintered iron piston and fluon-banded seal deliver enhanced structural integrity and consistent responsiveness to changing road conditions.
• Temperature Resilience: Large twin-tube body filled with all-weather fluid capable of withstanding internal temperatures from -40°F to 248°F.
• Ride Harshness Mitigation: Includes polyurethane rebound bumpers and rubber bushings to help absorb road noise and vibration.
• Protection Included: Ships with a polyvinyl protective boot to shield the piston rod from debris and contaminants.

Each RS55265 unit is built as a direct-fit replacement for the OE front shock and is backed by Rancho’s Limited Lifetime Warranty.