Fox 983-50-004 Evolution Series Rear Shock for 4" - 6" Lift Made To Fit the 2007-2016 Jeep JK Wrangler, 2dr & 4dr, are designed to be used on Jeep JKs with 4-6" of Rear Lift Sold individually 2.0" smooth bore internal IFP; 5/8" Nitro Steel shaft Mono-tube reservoir design Quiet nitrile rubber bushings