Axiom Supply Stage 3 FOX 2.0" Performance Leveling System GM HD Truck 2500 / 3500 Silverado / Sierra 2011-2019

Fitment

The Axiom Supply Stage 3 FOX 2.0 Performance Leveling System is a complete suspension upgrade engineered specifically for GM HD trucks requiring increased ride height, corrected suspension geometry, enhanced wheel travel, and improved ride quality both on and off-road.

Applications include:

2011-2019 Chevrolet Silverado 2500HD

2011-2019 GMC Sierra 2500HD

2011-2019 Chevrolet Silverado 3500HD

2011-2019 GMC Sierra 3500HD

Fitment Notes

Provides up to 2" of front ride height adjustment.

Designed for stock, leveled, and lifted applications.

Includes vehicle-specific FOX Performance Series 2.0 IFP shocks properly sized and valved for leveled GM HD trucks.

Compatible with most aftermarket suspension systems utilizing factory-style upper control arm mounting locations.

Oversized tires exceeding 11.50" in width may contact the control arm when used with certain factory wheel configurations.

Additional wheel offset or wheel spacers may be required depending on tire size and wheel combination.

Features

FOX Performance Series 2.0 IFP Shocks – Includes a complete set of FOX Performance Series 2.0 Internal Floating Piston shocks engineered to deliver exceptional ride quality, improved suspension control, and dependable performance in both on-road and off-road environments.

Race-Proven Damping Technology – FOX's race-developed damping system delivers a comfortable highway ride while maintaining predictable handling and control when terrain becomes rough and demanding.

Internal Floating Piston (IFP) Design – FOX's monotube IFP architecture separates shock oil from the high-pressure nitrogen gas chamber, eliminating oil aeration and ensuring consistent damping performance under demanding conditions.

Application-Specific Valving – Each FOX shock is selected and tuned specifically for leveled GM HD trucks to provide balanced ride quality, improved stability, and enhanced suspension control.

High-Flow Damping Piston – Race-developed high-flow piston technology provides smooth, predictable damping characteristics while maintaining control through rough terrain, towing conditions, and daily driving.

Impact Extruded Aluminum Bodies – Lightweight precision aluminum shock bodies improve heat dissipation while providing outstanding corrosion resistance and long-term durability.

True Double-Shear Construction – Built from identical upper and lower 3/16" steel plates that are precision laser cut and hand welded into a single rigid structure. This true double-shear architecture distributes suspension loads evenly while maximizing strength, rigidity, and long-term durability.

Equipped with AX6292 Grade 12.9 Ball Joints – Every kit includes a pair of Axiom Supply AX6292 bolt-on upper ball joints featuring our Grade 12.9 Extreme-Duty Ball Stud technology for exceptional strength, steering precision, and resistance to deformation under heavy loads.

Forged Torsion Leveling Keys – Designed to provide additional front ride height while maintaining proper torsion bar indexing and adjustment range.

Corrected Suspension Geometry – Restores proper suspension operating angles while improving droop travel and overall suspension performance.

Dual-Position Ball Joint Mounting – Allows the ball joint to be mounted above or below the control arm mounting plate, providing additional flexibility when dialing in alignment settings and suspension geometry.

Precision Laser-Cut Components – Manufactured using computer-designed, laser-cut steel components for exceptional fitment consistency and manufacturing accuracy.

Service-Friendly Design – Improved grease fitting access simplifies routine maintenance and lubrication regardless of control arm orientation.

Premium Bushing System – High-quality bushings and sleeves provide smooth articulation while minimizing unwanted suspension deflection.

Built for Heavy-Duty Use – Engineered to withstand the demands of towing, oversized tires, lifted suspension systems, off-road use, and daily driving.

Lifetime Warranty Protection – Backed by the Axiom No-Nonsense Lifetime Warranty for the original purchaser.

Description

The Axiom Supply Stage 3 FOX 2.0 Performance Leveling System was developed for GM HD truck owners seeking a premium suspension upgrade that combines improved ride height, corrected suspension geometry, and FOX performance shock technology into one complete package.

At the foundation of the system are Axiom Supply forged torsion leveling keys, providing up to 2" of front ride height adjustment to eliminate factory rake and create clearance for larger tire and wheel combinations. Unlike basic leveling kits that only increase ride height, the Stage 3 System addresses the suspension changes created by leveling while significantly enhancing overall ride quality and vehicle control.

Included in every kit is a complete set of FOX Performance Series 2.0 IFP shocks. Built around FOX's race-proven damping technology, these shocks are engineered to deliver a smooth, comfortable on-road ride while maintaining predictable handling and confidence in demanding off-road conditions. The monotube Internal Floating Piston design separates shock oil from the high-pressure nitrogen chamber, eliminating aeration and allowing the factory-tuned valving to perform consistently under load.

The FOX 2.0 platform also features race-developed high-flow damping pistons and application-specific valving selected specifically for leveled GM HD trucks. This combination delivers enhanced suspension control, improved ride comfort, and greater stability whether the truck is towing, hauling, commuting, or exploring rough terrain. Precision impact-extruded aluminum shock bodies further improve cooling efficiency while providing exceptional corrosion resistance and long service life.

To ensure suspension geometry remains optimized after leveling, the system includes Axiom Supply Heavy-Duty Upper Control Arms featuring a true double-shear construction utilizing identical upper and lower 3/16" steel plates hand welded into a rigid boxed structure. This design distributes suspension loads evenly through the ball joint mounting area while minimizing flex and maintaining alignment integrity under demanding conditions.

Each control arm is equipped with Axiom Supply AX6292 Bolt-On Upper Ball Joints featuring our Grade 12.9 Extreme-Duty Ball Stud technology. Combined with the arm's dual-position ball joint mounting system, installers gain additional alignment flexibility while benefiting from one of the strongest bolt-on upper ball joints available for the GM HD platform.

The result is a complete suspension package engineered to improve appearance, ride quality, wheel travel, suspension performance, and long-term durability without compromise.

Whether your truck spends its time towing, hauling, navigating job sites, exploring backroads, or serving as a daily driver, the Axiom Supply Stage 3 FOX 2.0 Performance Leveling System delivers the confidence, comfort, and control expected from a premium suspension upgrade.

Maintenance

Apply 3 pumps of grease to each ball joint during installation.

For continued performance, service each ball joint every 5,000–7,000 miles. Use only the amount of grease necessary to lubricate the joint and avoid over-greasing.

Includes

(2) Axiom Supply Heavy-Duty Upper Control Arms

(2) Axiom Supply AX6292 Grade 12.9 Bolt-On Upper Ball Joints

(2) Axiom Supply Forged Torsion Leveling Keys

(2) FOX Performance Series 2.0 IFP Front Shocks

(2) FOX Performance Series 2.0 IFP Rear Shocks

(4) Control Arm Sleeves

(8) Control Arm Bushings

Complete Installation Hardware Kit

Installation Instructions

The Axiom No-Nonsense Lifetime Warranty

Our suspension and steering components are warrantied for life to the original purchaser against manufacturer defects, premature wear, or breakage.

Push it to the limit—we don't care.

If the part lets you down, we'll make it right.