KSP PERFORMANCE 4"-6" Shock Extenders Fit Silverado Sierra 1500, Shock Extension Kit for 1999-2006 Chevy Silverado GMC Sierra 1500 All Cabs, Rear Lowering Shock Mount Drop Shock Brackets

The installation went smoothly, no issues at all. Just needed to have purchased the shock extender, my bad.

Not bad they did everything I wanted them to for a good price. You just have to be careful with the ubolts because of the fine thread.

A year or so ago, I ordered the KSP 2.5" front spaces for my 2016 Silverado. The truck looked level at the time but I had Helper Shocks in the rear at the time. The helper shocks were too noisy and squeaked horribly. After removing the shocks, the truck had a squat to it.I ordered these 3" Blocks to replace the factory blocks of ~ 1.25". The result is perfect. I have the lift I desired with the factory rake back.To install these follow the same instructions as someone else posted.With the truck on the ground:-Loosen and remove one ubolt-Install one new longer ubolt with the nuts tightened just enough so the ubolt threads pass completely thru the nut-Repeat for second ubolt on same side-Using a floor jack, lift the leaf spring up away from the axle and support leaf spring with jack stand-Silde existing block out and replace with new block (tapered end toward front of truck)-Remove jack stand and lower spring back on to the new block-Be sure the holes and pins in the new block line up-Torque down new bolts and repart for opposite side.I was able to do this install in 25 minutes in my driveway with a 22mm deep socket and my M18 Impact Gun. Drive the vehicle and retorque the nuts after a 20-30 miles. Instructions were not included but I did 85 ft lbs on my torque wrench.

Easy to install if you have mechanical experience, took about 45 min, fit and finish are good, been on my truck for about 5 months with no issues

Package came quick, install was a breeze and looked the way I imagined. Great product.