FOX Factory Race Series 3.0 Internal Bypass shocks for the Toyota Tundra deliver position-sensitive damping technology, Dual Speed Compression (DSC) adjustment, and high-speed ready performance in a bolt-on kit. Patented Internal Bypass technology allows for multiple zones of damping control. The result is a comfortable, confident ride with increased damping capacity through rough terrain. Internal bypass shocks produce more force progressively to control hard bottom-outs, prevent harsh top-outs, and provide an initial catch for landing. Shock fluid bypasses the main piston through a series of bleed holes in the ride zone. As the shock extends past the ride zone in rebound or compression, the bleed holes terminate, forcing fluid through the main piston. A Recirculating Reservoir Bridge enables the continuous exchange of shock fluid between the finned external reservoir and body using a checked port, keeping shock temperatures cool for better performance. Type III anodization prevents corrosion and wear of the 3-inch diameter aluminum bodies. Dial in your Tundra for load, environment, and driving style with the DSC adjuster. FOX Internal Bypass shocks deliver the support and confidence you need while driving high-speed through rugged terrain. Experience race-bred performance next time you leave the pavement. Features 3.0″ impact extruded and CNC machined 6061-T6 Type III anodized aluminum body Patented, internal bypass design Application-specific springs 7/8″ stainless steel shafts Vehicle-specific tuning maximizes performance Redundant sealing pack system: main seal, wiper seal, scraper seal Finned reservoir, with DSC adjuster Adjuster Type DSC – Dual Speed Compression Extended 25.450 Compressed 16.280 Travel 9.170 Top Mount Stem Bottom Mount Eyelet