1999-2007 (Classic) GMC Sierra 1500 4WD Rear Lift Blocks with Premium Forged Flat Top U-Bolts Rear Lift:3" Tapered Lift Blocks (Overloads) Renowned for its sheer strength

Renowned for its sheer strength and light weight

Designed to replace the upper control arm’s left and right OEM slotted eccentrics

Ultra-High Density Polyurethane Spring Spacers for a Perfect Fit

6 x 135mm Bolt Pattern and 87mm Center Bore

Safe Working Load 1

1999-2007 (Classic) GMC Sierra 1500 4WD Rear Lift Blocks with Premium Forged Flat Top U-Bolts Rear Lift:3" Tapered Lift Blocks (Overloads) Renowned for its sheer strength2x Rear Lift Blocks with 9 16" Single Pin 4x Premium Forged Flat Top U Bolts Installation Hardware Notes: Will fit 6 Lug Models Only. Please check you rear suspension setup before ordering. We are proud to introduce our New Heavy Duty Steel Lift Blocks, precision engineered by our experts not only to lift your truck but to improve your ride quality and comfort as well as lifetime use. The 1" Heavy Duty Steel Blocks are constructed from one solid block