A true sport performance shock, the new 490 Sport Series Shocks feature a high-pressure monotube with deflective disc damping technology. This technology coupled with a linear rate spring allow for consistent feel through the damper stroke and the ability to withstand extreme temperature ranges and heavy loads. An engineered jounce bumper with a built-in metal cup also help smooth out and control bottoming. From pounding pavement around town to hammering around the tarmac on your next race day, the 490 is the perfect choice for your performance demand! Every shock is hand-built, tuned and dyno'd and come with a lifetime warranty. High Pressure Gas Monotube Deflective Disc Damping Lightweight Aluminum Body Adjustable rebound Damping Adjust Preload by Hand Lifetime Limited Warranty