1999-2006 Chevy/GMC Silverado/Sierra (OEM Torsion Bar Front End)(3 Inch Front/4 Inch Rear Lowering Kit)

Precision-Engineered Static Drop | Correct Geometry | Includes All Shocks | Direct Bolt-On | Factory Ride Maintained

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Lowering a full-size GM truck requires a suspension system that is engineered—not forced—to operate correctly at a reduced ride height. If you want the cleanest, safest, and best-riding 3/4 drop for your 1999–2006 Chevy Silverado or GMC Sierra with an OEM torsion-bar front end, this complete kit delivers everything needed for a professional, geometry-correct static drop.

This premium lowering system combines 3-inch lowering control arms up front with a 4-inch rear hanger & shackle drop in the back, all specifically designed for torsion-bar 1500 trucks. It maintains factory ride characteristics, correct ball joint angles, proper alignment specs, full suspension travel, and reliable daily-driving comfort.

To ensure proper ride, this kit includes the exact shocks engineered for this drop:

Included Shocks: 

• Front: DJM 1315 (13.5" Extended / 9.0" Collapsed)

• Rear Driver: DJM 1900 (19.5" Extended / 12.25" Collapsed)

• Rear Passenger: DJM 2000 (20.5" Extended / 12.75" Collapsed)

This is a true all-in-one lowering kit—not a partial setup that leaves you guessing. Every component works together to deliver the stance, geometry, and ride quality your Silverado or Sierra deserves.

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Special Fitment Notice for 2003–2006 Crew Cab Trucks

Some 03–06 crew cab models have welded front leaf spring eye hangers and require a different configuration.

If your truck falls into that category, you must use:

Front Control Arms:

• CA2001L-3D (Driver)

• CA2001L-3P (Passenger)

Rear Kit:

• RK2099-4 (Lowering Kit)

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COMPATIBILITY — FITS THE FOLLOWING TRUCKS

1999–2006 Chevy Silverado 1500 (Torsion Bar Front End) 2WD/4WD

1999–2006 GMC Sierra 1500 (Torsion Bar Front End) 2WD/4WD

This kit fits:

• Regular Cab

• Extended Cab

• Crew Cab (see note above)

• Short Bed or Long Bed

Does NOT fit:

• 2500 / 3500 HD

• Coil-spring front end trucks

• 1500 trucks converted to coilovers

• Non-torsion bar models

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THE CORRECT WAY TO LOWER A TORSION BAR SILVERADO/SIERRA

Torsion-bar GM trucks cannot be lowered safely with just torsion keys or drop keys. Keys twist your torsion bars deeper into preload instead of re-engineering suspension geometry. This causes:

Harsh ride

No down-travel

Ball joint binding

Uncorrectable alignment

Shock bottoming

Premature wear

Steering bind

Unsafe handling

This kit corrects geometry instead of fighting it.

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FRONT: 3-INCH DROP USING LOWERING CONTROL ARMS (NOT KEYS!)

Your new front lower control arms are engineered specifically to drop the truck a clean 3 inches while maintaining:

Correct ball joint angles

Factory alignment capability

OEM-grade suspension travel

Proper shock geometry

Safe tie rod angles

Factory ride quality

Why Lowering Control Arms > Torsion Keys

• Keys simply crank the suspension downward until it bottoms out.

• Control arms re-engineer pivot points and ball joint angles for lowered operation.

• Ride becomes smoother, predictable, and safe.

• No binding. No damage. No harshness.

What Comes Installed on Each Arm

• New pre-clocked ball joints

• High-strength urethane bushings

• Twin-tube pivot sleeves

They arrive ready to bolt on. No pressing or assembly needed.

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REAR: 4-INCH DROP USING HANGERS + SHACKLES

The rear of the truck is lowered 4 inches through a superior method:

Front leaf spring eye hangers (2" drop)

Rear lowering shackles (2" drop)

This combination gives the Silverado/Sierra:

• Perfect 4" rear drop
• Completely safe geometry
• Factory spring rate
• Full load-carrying ability
• Smooth ride with proper travel

NO lowering blocks are used — because blocks cause axle wrap, wheel hop, and rear-end instability.

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WHY THIS IS THE BEST 3/4 DROP KIT AVAILABLE

Correct Geometry Front and Rear

Everything is engineered—not forced—into proper alignment.

Maintains Factory Ride Quality

Because torsion bar preload isn’t increased, the truck rides comfortably.

Retains Full Alignment Range

Alignment techs can bring camber, caster, and toe back into OEM spec easily.

Shocks Tuned for Drop Included

Exactly the right compression and rebound valving for this specific drop.

Best Suspension Travel of Any Lowering Method

This is extremely important for daily driven and long-distance trucks.

Improved Handling & Control

Lower center of gravity + proper geometry = real performance improvement.

Show Truck–Ready Stance

The 3/4 drop delivers a muscular, modern, perfectly leveled look.

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PERFECT FOR THESE WHEEL SETUPS

This kit works beautifully with:

• 20" wheels

• 22" wheels

• 24" wheels

• Low-profile tire combinations

• Deep-dish and custom offset wheels

• OEM 17” and 18” wheels for daily drivers

Your Silverado/Sierra will sit tight, clean, and aggressive with no sagging or strange articulation.

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INSTALLATION OVERVIEW

Skill Level: Intermediate

Time Required: 6–10 hours for a full front/rear install

Tools Needed:

• Jack & jack stands

• Impact gun or breaker bar

• Torque wrench

• Standard metric socket set

• Ball joint separator (optional)

• Cutting tools (for hanger rivets)

• Alignment afterward

Rear hanger rivets must be removed—typical for GM lowering kits.

When finished, schedule a professional alignment.
These control arms make alignment easy due to corrected geometry.

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WHY BUY FROM GAUGE STORE?

Gauge Store is one of the most trusted names in the custom truck and suspension world. Backed by Gauge Magazine and Slamology, we’ve supplied lowering components for:

• Feature trucks

• Show winners

• Daily driven lowered builds

• Static-drop street trucks

• Performance-inspired custom builds

You get:

Real-world suspension expertise
Fast shipping
Reliable brand-name components
Trusted fitment guidance
The best support in the custom truck industry

We don’t just sell parts — we live suspension.