Rough Country Vertex shocks 689011 for the GMC Sierra 3500HD are high performance reservoir shocks that offer amazing ride quality in every situation. An adjustable 8 stage damping system allows for perfect tuning for the road ahead. If you are looking for a smooth ride on the highway or if you need ultimate damping for off-road exploring, give the knob a twist to find the perfect ride setting for you. These Vertex shocks are nitrogen charged while featuring an external reservoir for increased oil capacity and damping sensitivity. Each shock features a massive 2.5” piston as well as a hardened piston rod. 

Features and Benefits:

• 8 stages of adjustable damping
• Adjustable ride quality with the turn of a dial
• Monotube design
• Nitrogen charged
• Designed for vehicles lifted 3-5"
• Remote reservoir with steel braided reservoir line
• Massive 2.5” Piston
• 22mm Chrome Hardened Piston rod
• 3 stage seal system
• Heat treated, alloy bearing
• CNC machined billet aluminum accents
• Zinc plate finish with double clear coat
• 400 hour salt spray rating
• 3 year manufacturer warranty