The Icon Vehicle Dynamics 77738P 2.5 VS (vehicle specific valving) PB (piggyback reservoir) Aluminum Series Shock Absorbers for the GMC Sierra 2500HD / 3500HD models are designed to perform excellent in off-road conditions while maintaining a smooth ride on the street. Featuring a massive 2.5 inch 6061 aluminum body that increases oil capacity and houses a 7/8 diameter chrome shaft. The piggyback reservoir improves performance by adding more oil capacity for better heat dispersion and resistance to fading.

Top Features and Benefits

• Vehicle specific valving (VS) for the GMC Sierra 2500HD / 3500HD
• fits with 6-8 inch Front Lift
• Extended Travel Coilover - Allows for more down travel (aftermarket upper control arms are required)
• 2.5 inch diameter 6061 Aluminum Series body for great heat dissipation and corrosion resistance
• Piggyback reservoir improve coil capacity and off-road performance
• Polyurethane bushings and zinc plated sleeves
• 7/8 inch chrome plated steel shaft
• Monotube nitrogen charged gas design with external reservoir
• 100 % rebuildable