1973–1987 Chevrolet/GMC K10–K20 Lift Blocks – 4", 6", or 8"

Enhance the stance and lift of your classic Chevy or GMC truck with premium, 🇺🇸 American-made lift blocks built specifically for the 1973–1987 K10 and K20 4x4 models. Available in 4", 6", and 8" sizes, these custom-fabricated blocks are true to size, delivering accurate rear lift and consistent fitment.

🔧 Key Features

• ✅ Custom-built in the USA 🇺🇸 for 1973–1987 Chevy/GMC K10 & K20 4WD trucks

• ✅ Available lift heights: 4", 6", or 8" – each true to size

• ✅ Heavy-duty fabricated steel construction for rugged performance

• ✅ Optional taper (if applicable) to improve driveline angle and reduce vibration

• ✅ Durable black powder coat finish resists rust and corrosion

• ✅ Sold in pairs for rear axle installation

• ✅ Compatible with factory or extended U-bolts (not included)

🛠️ Installation

• Install Time: Approximately 1–2 hours

• Tools Needed: Basic hand tools, jack, and jack stands

• Fitment Note: For use on rear leaf spring suspension only. Not compatible with coil springs or independent rear setups.

• Vehicle Requirements: Fits most lifted K10/K20 models with 2.5"-wide rear leaf springs and solid axle.

🧩 Compatibility

• Chevrolet K10/K20 (1973–1987)

• GMC K15/K25 (1973–1987)

• Rear axle only; 4WD models with leaf spring rear suspension

⚠️ Important Notes

• ⚠️ U-bolts not included. Extended U-bolts are required when installing taller blocks.

• Designed for rear axle use only—not intended for front or coil spring suspension systems.

• Do not stack with other blocks or use in combination with add-a-leaf kits.

🇺🇸 Built in America. Built to Lift.

Each set of blocks is proudly fabricated in the USA with a focus on craftsmanship, strength, and accurate fitment. Whether you're adjusting ride height or gaining clearance for larger tires, these true-to-size, American-made lift blocks are ready for the job.