Synergy Jeep JK 4 Inch Rear Lift Coil Springs Fit and Lift: 07-18 Jeep Wrangler JK Lifts 4 Inch 07-18 Jeep Wrangler Unlimited JK Lifts 3 Inch Details: Rear lift coils for 2 DR and 4 DR Jeep JK Wranglers Synergy coils offer excellent off road performance while preserving ride quality Progressively wound; keeps spring from coming unbound at suspension droop Progressively wound spring eliminates annoying spring clanking found on most suspension kits Feature frequency balanced and tuned spring rates to maximize suspension performance on and off road Suspension components feature an abrasion-resistant black Powdercoat finish for maximum durability and corrosion resistance Springs are designed to give the advertised amount of lift with use of aftermarket rear bumpers tire carriers.

Sold in Pairs Notes:
When using stock Jeep JK Wheels, We recommend a 1-1/2 inch Bolt On Wheel Spacer (5X5 Lug Pattern) When using 35 inch tires 3 inch Tall Bump Stop Spacers are required When using 37 inch tires 4 inch Tall Bump Stop Spacers are required When using Synergy 2 DR 5.5 inch Lift Springs we recommend installation of Synergy JK Long Arm System 40-42 inch tires require minimum 6+ inch lift