The Tuff Country 6" Performance lift kit contains front coil springs with extended radius arms, radius arm and axle pivot brackets, power steering pitman arm, front sway bar drop brackets, front & rear brake line extension kit, and rear add-a-leafs with a 4" block kit (replaces factory block). The extended radius arms will provide better suspension articulation because of the added length along with the rear mounting bracket using a pivoting axis mount. Additional tire clearance is gained due to the "angled inward" design. The axle pivot brackets feature adjustable cam-bolts that allow for a more precise alignment resulting in better tire wear. Longer shocks are required and sold separately.