Fitment Information Acura TLX (2015, 2016, 2017, 2018, 2019, 2020) Specs & Features Lowers 2.0" Front and 2.1" Rear Includes all 4 lowering springs Works with factory shocks or aftermarket shocks that fit stock springs Product Description D2 Racing Pro Series Lowering Springs feature an aggressive drop for those who want their car low!  To maintain ride quality with such a low drop, D2 Racing created these springs to be progressive rate which increases the spring rate the more the spring is compressed. To ensure quality. D2 Racing manufactures their lowering springs from quality steel in a ISO 9001 and TUV approved facility.  In fact, D2 Racing springs are such high quality, D2 Racing offers a lifetime warranty on these springs when purchased through an authorized dealer such as Redline360! D2 Racing Lowering Springs Feature: Progressive Spring Rate Lifetime Warranty Includes a set of 4 springs Aggressive drop Aftermarket shocks highly recommended Redline360 is an authorized D2 Racing dealer and sells only new and genuine D2 Racing products