How to Install Teraflex 2.5 in. Front Coil Springs (07 18 Jeep Wrangler 18 Up Wrangler JL 2 Door 2.5 Inch Lift Coil Spring Pair Front TeraFlex Teraflex Jeep Wrangler 2.50 Inch Coil Spring Base Suspension Lift Kit Teraflex JK 2 Door 6" Lift JKU 4 Door 4" Lift: Rear Coil Springs Pair How to Install Teraflex 2 in. Front Lift Coil Springs (97 06 Jeep Teraflex Jeep Wrangler 3 in. Front Lift Coil Springs 1843302 (97 06. TeraFlex JL: Lift Coil Springs are perfectly engineered for your JL Jeep Wrangler Unlimited. Our engineers focused on extensive rate tuning and dynamic balance between front and rear and side to side load bias to produce Lift Coil Springs that deliver unsurpassed highway handling and off road performance. Up front, we chose progressive dual rate lift coil springs that provide optimal performance both on and off road. These progressive dual rate coil springs provide consistent performance and predictable handling throughout normal street driving just like a linear rate spring. When the axle begins to droop, the softer sprung upper section of the coil spring begins to unwind for maximum flex and spring retention. We recommend pairing TeraFlex Lift Coil Springs with Falcon Performance Shocks for superior performance. TeraFlex Lift Coil Springs and Falcon Performance Shocks have been engineered together to improve both compression and rebound for optimal vehicle stability. Includes: 2. 5 Inch Lift Coil Spring Front x 2 Fitment Vehicle(s): JL Wrangler (2 door) Specs: Lift Height: 2. 5 Inch