The Synergy Upper Control Arm Hardware Kit is designed to replace every suspension link bolt on your Jeep Wrangler JK. This kit uses high strength G9 hardware and includes hardened extra thick washers that won’t deform or contort over time like standard washers. Kit Includes- (4) 9/16-18 UNF x 3.50″ long G9 bolts (RUCAs)- (4) M12 X 1.50 85MM (3.50″) long GR10.9 bolts (FUCAs)- (4) M12 x 1.50 G9 Stover top lock nuts- (4) 9/16″ Extra Thick G9 hardened flat washers- (8) 1/2″ Extra Thick G9 hardened flat washers- (2) Rear Upper Control Arm Nut Tab, Frame Side- (2) Rear Upper Control Arm Nut Tab, Axle Side Notes:** Please allow a 2-3 week lead time for production and shipping depending on demand Installation Instructions:Installation Instructions Fits:Jeep Wrangler JK 2 Door (2007-2018)Jeep Wrangler JK 4 Door Unlimited (2007-2018)