AFE: Magnum FORCE Performance Accessories Coupling Kit: 2-3/4"ID x 1-3/4"L (Silicone) b3r Spring rate can be altered

Spring rate can be altered by simply adding air (without effecting ride height) and ride quality remains un-effected when the bag is deflated

Designed to stiffen the front suspension and reduce K-member deflection

Total OEM looking finish and installation appearance

Tube lengths are optimized for true pulse control technology which improves flow and performance

AFE: Magnum FORCE Performance Accessories Coupling Kit: 2-3/4"ID x 1-3/4"L (Silicone) b3r Spring rate can be alteredDETAILS: 2 3 4 ID, 1 3 4 Length 100% Silicone Construction for Long Lasting Durability Commonly Used on aFe POWER Intakes Allows for Expansion, Movement, and Vibration Includes Two Stainless Steel Clamps 2 3 4 Internal Diameter: This 1 3 4 long coupling is designed to connect to a tube with a 2 3 4 diameter. Its commonly used on aFe POWER cold air intake systems, but can be used for a variety of projects. Silicone Construction: Its silicone