Rusty's YJ Wrangler 4" Kit


  • Brand: Rusty's Off Road Products
  • Availability: In Stock
  • Part Number: RK-400SP-YJ-RX1

Rusty's 4 inch kit is a great way to get the clearance for 33 inch tall tires without compromising on-road ride quality. Rusty's spring packs are built using 5 individual leafs, both front and rear. The springs feature bolt-style retaining clips and nylon anti-friction pads, both of which allow the individual leafs to slide easily against one another for excellent ride and flexing characteristics. Rusty's springs also feature full military wraps for the extra strength needed when out in the rocks. Rubber bushings are used in the frame-mount end of the spring for better flex and ride quality, while poly bushings are used at the shackle end for stability and superior handling.

A properly designed suspension kit is more than just new springs, and Rusty's YJ kit includes everything else that needs to be addressed with a 4" lift. A transfer case drop kit is provided that corrects the driveline angle and eliminates any vibrations. Steel 6 degree shims (not aluminum) also correct driveline angle. Front and rear track bar brackets address track bar angles, while brake line extensions ensure that the stock hoses will work with the extra ride height and flex that this kit provides. Extended sway bar links keep the anti-sway bar's operating angle in check. New front and rear U-bolts as well as Rusty's legendary Hydro shocks round out the kit.

Several optional upgrades are available, including a dropped pitman arm (available for power steering only), Rusty's own sway bar quick-disconnects, stainless steel brake hoses, and a heavy-duty steering stabilizer.

YJ Wrangler shown with 35 X 12.50 R 15 BF Goodrich Mud Terrain KM2 on 15 X 10 Wheels

Make no mistake: this kit is an exceptional value! The quality of the parts used in Rusty's YJ kit is as good or better than kits priced twice as much!


  • Front Leaf Springs - 165lb. Spring Rate
  • Rear Leaf Springs - 165lb. Spring Rate
  • Front & Rear U-bolts
  • Transfer Case Drop
  • Extended Sway Bar Links
  • Front Track Bar Bracket
  • Rear Track Bar Bracket
  • Brake Line Extensions
  • Steel Rear Axle Shims
  • Front Rusty’s Hydro Performance Shocks
  • Rear Rusty’s Hydro Performance Shocks

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