dynofit 3-inch Rear Lift Blocks for Silverado 1500 / Sierra 1500 (2007–2024) — CNC Steel, Includes Extended U-Bolts

dynofit 3-inch rear lift blocks raise the rear of 2007–2024 Chevy Silverado 1500 and GMC Sierra 1500 trucks, providing a durable, CNC-machined steel spacer and extended u-bolts for a secure, level stance.

These rear lift blocks are engineered to fit both 2WD and 4WD Silverado and Sierra 1500 models from 2007 through 2024. Each kit includes two powder-coated steel blocks and four extended u-bolts sized to maintain proper clamping force around the square leaf spring axle setup. The blocks are precision machined for consistent compression strength and feature a protective finish to resist corrosion while preserving contact area with the leaf springs.

Will these lift blocks fit my Silverado or Sierra model?

The dynofit kit is designed specifically for 2007–2024 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks, compatible with both 2WD and 4WD variants that use square leaf springs. Compatibility covers standard factory rear axle configurations where block-style lift spacers are appropriate. Always verify your vehicle’s axle and leaf spring geometry before purchasing.

• Fitment: 2007–2024 Silverado 1500 and Sierra 1500, 2WD/4WD
• Works with square leaf spring axle set-ups
• Check ride height and clearance requirements prior to installation

How durable and safe are these lift blocks and u-bolts?

Each block is CNC-machined from steel and finished with a black powder coat to resist rust and surface wear. The kit includes high-grade bolts and thicker washers to provide reliable clamping strength, while extended u-bolts ensure proper thread engagement and reduce the risk of insufficient fit. The components are built for heavy-duty use under truck loads, though correct torque and periodic inspections are essential for long-term safety.

• CNC-machined steel for consistent strength and compression
• Black powder coat improves corrosion resistance
• 10.9–12.9 grade bolts with thicker washers for secure fastening
• Extended u-bolts avoid short-thread issues

What comes in the kit and are there any color or part variations?

The dynofit kit ships with two rear lift blocks and four extended u-bolts, along with the necessary high-grade bolts and washers. U-bolts may arrive in either black or yellow finish—this is purely cosmetic and does not affect fit or strength. The block dimensions are consistent to provide the advertised 3-inch lift when installed correctly on the leaf spring perch.

• Included: 2 rear lift blocks and 4 extended u-bolts
• U-bolts color varies by shipment (black or yellow), identical sizing
• Blocks measure to provide a 3-inch rear lift with standard installation

How do I install these blocks and what should I check after fitting?

Installation requires lifting the rear axle, removing existing u-bolts, inserting the dynofit blocks between the axle and leaf spring perch, and securing with the supplied extended u-bolts and high-grade nuts. Torque fasteners to manufacturer specifications and lower the vehicle to check ride height and wheel alignment. Reinspect torque after a short break-in period and periodically during regular maintenance.

• Requires jack and axle support; follow safe lift procedures
• Torque nuts to recommended specifications; recheck after initial use
• Verify alignment and brake line clearances after installation

Who is this for: This dynofit 3-inch rear lift block kit is intended for Silverado and Sierra 1500 owners who want a durable, bolt-on rear raise—useful for achieving a level truck stance, accommodating larger tires, or improving load clearance. It’s best suited to DIY mechanics, aftermarket installers, and fleet managers who need a reliable, vehicle-specific spacer with extended u-bolts and corrosion-resistant finishes. If your truck uses a different rear suspension design, consult a professional before purchase.