FlexHitch 3.5" Front / 3" Rear Lift Kit for Silverado 1500 & Sierra 1500 (2007–2018) — Leveling, Bolt-On OEM-Compatible

This bolt-on lift solution is engineered specifically for 2007–2018 Silverado 1500 and Sierra 1500 models (also fits 2019–2024 Silverado/Sierra 1500 2WD), delivering a factory-compatible way to increase ground clearance and achieve a level profile. The kit combines upper strut spacers, lower strut shims, a rear leaf spring block, u-bolts and shock extensions to provide a measured 3.5" front rise and an effective 2" rear rise on stock vehicles, creating a flush, factory-like appearance without extensive suspension rework.

How does this kit create a 3.5" front lift from smaller parts?

The front lift is the result of two matched components working with suspension geometry: a 2" front spacer and a 1.5" lower strut spacer. Though each part’s thickness measures less than its nominal lift due to shim geometry, together they achieve the advertised 3.5" front raise while keeping mounting points and ride characteristics OEM-friendly.

• Front spacer adds 2.0" nominal lift using a precise 1.4" shim thickness
• Lower strut spacer contributes a 1.5" nominal lift via a 0.8" shim thickness
• Combined geometry yields a true 3.5" front increase on stock suspension
• Maintains factory strut orientation and uses factory mounting locations

Will my original rear shocks still work after lifting the rear?

Yes — when you lift the rear, your factory shocks may become too short to retain full travel. This kit includes rear shock extensions that restore proper shock engagement, preserving damping performance when using OEM shocks.

• Includes two rear shock extensions designed for OEM factory shocks
• Not compatible with aftermarket lifted shocks or non-OEM brands
• Extends shock length safely to maintain ride and rebound characteristics
• Simple bolt-on installation for most stock rear shock assemblies

What does the rear lift measurement actually mean for ride height?

The kit ships with a 3" rear lift block installed on multi-leaf spring models, but because many trucks include a factory 1" lift block, replacing it results in an effective 2" rear increase. This creates a 1.5" front-to-rear difference that levels the truck’s factory rake for a balanced stance.

• Package rear block is 3" but yields 2" net lift when replacing a 1" factory block
• Designed to pair with stock multi-leaf spring rear setups only
• Includes new u-bolts sized for the added block thickness
• Produces an even look: front +3.5" and rear +2" on a stock vehicle

What materials and hardware are used, and will this affect durability?

FlexHitch builds the kit from 6061-T6 forged aircraft-grade aluminum with CNC machining for precision fit, and supplies Class 12.9 grade bolts to ensure clamp strength and longevity. The kit is vehicle-specific to maintain OEM fit and dependable performance under normal driving loads.

• 6061-T6 forged aluminum components for high strength-to-weight ratio
• CNC precision machining for accurate alignment and repeatable fitment
• Class 12.9 hardened bolts for secure, long-term clamp integrity
• Detailed installation instructions included for do-it-yourself or shop installs

Who is this for? This kit is intended for Silverado 1500 and Sierra 1500 owners (2007–2018 models and 2019–2024 2WD models) who want a factory-friendly lift that levels the truck, increases ground clearance, and preserves OEM suspension components. It is not compatible with 2007 "Classic" trucks, ZR2, TrailBoss, Denali (2014–2018), AT4 or MagneRide models, nor is it suitable with aftermarket lifted shocks. For vehicles seeking lifts beyond 2–4 inches or for those with special suspension packages, consider vehicle-specific upper control arms and consult a qualified installer to ensure alignment and handling remain optimal.