Sierra 2500HD 2011-2026 GMC Rough Country 2.5 Vertex Series Rear Shocks (fits w/ 3.5-7.5" Rear Lift)

The Rough Country 699011 Vertex 2.5 Rear Shocks deliver premium ride quality, advanced damping control, and rugged durability for 2011–up GMC Sierra 2500HD/3500HD trucks equipped with 3.5" to 7.5" rear lift. Designed for both off-road performance and on-road comfort, these shocks offer a high-end suspension upgrade without the premium price tag.

At the core of the Vertex system is a 2.5" monotube shock body paired with an external remote reservoir, significantly increasing oil capacity and improving heat dissipation. This design ensures consistent damping performance even under aggressive driving conditions, reducing shock fade and maintaining control over rough terrain.

Each shock features a massive 2.5" piston and an 18mm chrome-hardened piston rod, delivering exceptional strength, responsiveness, and durability. Nitrogen-charged internals enhance ride stability while improving overall handling and comfort.

Built to withstand harsh environments, these shocks incorporate a 3-stage sealing system to prevent contamination and extend service life. The precision-honed steel body, heat-treated alloy bearings, and zinc-plated finish with double clear coat provide outstanding corrosion resistance and long-term reliability.

Finished with CNC-machined billet aluminum accents, braided reservoir lines, and laser-cut mounting brackets, the Vertex series combines performance and style for a complete suspension upgrade.

Features & Benefits

• Designed for 3.5"–7.5" rear lift applications
• 2.5" monotube shock body for superior damping performance
• Remote reservoir increases oil capacity and cooling
• Nitrogen-charged design reduces shock fade
• Massive 2.5" piston improves control in rough terrain
• 18mm chrome-hardened piston rod for added strength
• Vehicle-specific tuning for balanced ride quality
• 3-stage sealing system protects against contamination
• Heat-treated alloy bearings for durability under load
• Precision-honed steel body for smooth operation
• Zinc-plated finish with double clear coat for corrosion resistance
• Over 400-hour salt spray rating for long-term durability
• Steel-braided reservoir lines and billet accents for premium styling
• Backed by a 3-year manufacturer’s warranty