The future of Bump Shocks The JounceShock is a patented new form of bump shock that will maximize the capacity and performance of your suspension. The nitrogen charged secondary shock adds additional compression damping and controlled rebound to your vehicle'ystem. The result is: exponential suspension bottoming protection, increased stability and handling at all speeds, and reduced stress and loads for both the vehicle and driver. Benefits * Eliminate suspension bottoming * Increase stability and improve handling at all speeds * Enhance rock crawling ability * Improve towing stability and load capacity Double your suspension capacity in: * Off-Road Racing * Lifted Trucks * Rock Crawling * Fleet Vehicles * Rock Racing * Recreational Off-Road * Stock Trucks 1.5" Travel JounceShock 6" long base unit is great for tight spaces with 1:1, 2:1 or 3:1 motion ratios Universal base unit - For custom installation - 2-3/8" Bore - Nitrogen and oil fill adjustable - Adjustable Compression and Rebound - 6.221" Extended - 4.721" Compressed Rebuild Kits are available: # 25712 - Single Kit # 25713 - Four Kits US Patent #7140601 B2