Synergy Jeep JK 4.5 Inch Lift Stage 4 Long Arm Suspension System is for those wanting maximum performance and capability without sacrificing ride quality. It carries over the quality components of the Stage 3 System, but improves upon them by swapping out the Standard Length Control Arms for Adjustable Long Arms and Long Arm Mounting Brackets. This is a 100 percent bolt on system with no welding required. This system will fit 37 inch tires with stock fenders or 40 inch tires with high fenders.
Details:

• Fits 07-18 Jeep Wrangler Unlimited JK 4-Door
• Stage 4 key features are front and rear track bar relocation brackets, flipped drag link, and all adjustable upper lower long arms
• Front and rear bump stop extension kits
• Front and rear sway bar links
• Front and rear extended Stainless Steel steel braided brake lines
• Synergy double adjuster sleeve pinch bolt assembly allows for adjustment of control arm, track bar, tie rod, and drag link length without removal
• Front and rear track bar relocation brackets raise track bar mounting positions increasing suspension roll center heights which improves handling on and off road
• Lower control arms are manufactured from high quality crush resistant 2X.250 inch Wall 1026 DOM tubing
• Features Synergy Dual Durometer Bushings (DDB) with Teflon bearing surface for a maintenance free design focusing on performance, flex, longevity, and ride quality.
• Front and rear lower shock mounts
• Optional front sway bar disconnect system for ultimate trail articulation mounts sway bar up and out of the way when disconnected from the axle
• Progressive wound coil spring manufactured using the latest in CNC hot winding technology keeps spring from coming unbound at full suspension droop
• Suspension components feature an abrasion-resistant Powdercoat finish for maximum durability and corrosion resistance
• 100 percent bolt on components assure an easy, trouble free installation with the use of basic hand tools
• Requires a maximum 4-3/4 inch backspace wheel or wheel spacer with factory wheel setup. 4-1/2 inch back spacing is recommended
• Synergy suspension systems are a modular design so all components are available separately

Note:

• 2012+ JK's lifted over 2 inch will require exhaust spacers (5017), or a front aftermarket drive shaft to prevent interference with the exhaust