Billet AFX Drop Spindle - GP-X

Upgrade Your A, F, or X-Body With Our Billet Drop Spindle – GP-X Series

If you’re building a serious street machine or track weapon based on a GM A, F, or X-body platform, your spindle geometry is holding you back. Our GP-X Series billet drop spindle is engineered to eliminate those limitations with precision, performance and unmatched adjustability.

Crafted from aerospace-grade 6061 billet aluminum, this spindle delivers a 2” front drop the correct way, without compromising suspension geometry like lowering by springs or adjusting coilovers do. Combined with built-in bump steer correction and an adjustable upper ball joint pocket, the GP-X spindle is a breakthrough in tunability and performance.

GP-X Series: Innovation Without Limits

The GP-X Series is the pinnacle of design and technology at Gorman Performance Engineering; an elite line of components crafted from exotic materials like billet aluminum, advanced composites, and aerospace-grade alloys. Engineered for those who demand the absolute best, GP-X parts blend art and science to deliver ultra-high performance with show-stopping aesthetics.

Every GP-X component is a statement: lightweight, precise, and unapologetically advanced. Whether it’s pushing the envelope on the track or setting a new standard in craftsmanship at the show, GP-X is where form meets function in its most refined and radical form.

For visionaries, perfectionists, and performance purists, the GP-X Series is where brilliance becomes reality.

Game-Changing Features

True 2” Drop Without Compromising Geometry

Lower your vehicle properly, without altering control arm angles, compromising roll center position, or inducing poor camber curves. This is the correct way to drop your A-body, F-body, or X-body while maintaining optimal geometry.

Built-In Bump Steer Correction

Integrated correction geometry reduces the need for tie rod spacers, providing more consistent steering input and handling through the suspension’s range of motion.

Adjustable Upper Ball Joint Pocket

Raise, lower, and shim the upper ball joint to fine-tune:

• Roll center height

• Camber gain

• Kingpin inclination (KPI)

This unique feature lets you adjust KPI and camber independently—something not possible with control arm shims or tall ball joints alone.

Integrated Caster Pad for Precision Alignment

A built-in machined caster pad on each spindle face allows fast, repeatable caster angle measurement with any digital angle finder. No need for guesswork, bubble gauges, or jigs; just bolt up, measure, and dial in your alignment at the track or in the shop with confidence.

C6/C7 Corvette Brake Compatibility

Configurable to accept C6 or C7 Corvette calipers and rotors, unlocking huge braking performance potential with OEM availability and aftermarket upgrade paths.

Uses Corvette Wheel Hub

Designed around the C6/C7 Corvette unit bearing hub for superior strength, precision, and durability under high-load track and street conditions. No tapered roller bearings or preload hassles—just bolt-on reliability.

Includes ARP Hardware

All GP-X spindles are assembled using premium ARP fasteners, delivering the ultimate in tensile strength, corrosion resistance, and peace of mind at speed.

Compatible With Your GM A, F & X-Body Build

Designed to bolt into stock or aftermarket suspension systems, this spindle integrates seamlessly with your build:

• 1964–1972 GM A-Bodies (Chevelle, GTO, Cutlass, Skylark, etc.)

• First-gen F-Bodies (Camaro, Firebird)

• First-gen X-Bodies (Nova, Ventura, Apollo, Omega)

Pair With Other GPE Components For Maximum Performance

• GP-X Upper Control Arms – Optimize caster, camber gain, and roll center with precision CNC machined aluminum control arms.

• GP-R Lower Control Arms – Add rigidity, strength, and articulation to your front end

• GP-R Front Sway Bar – Reduce body roll and improve transitional grip