QA1 52613-D600 Level 3 Double Adjustable Front Coilover Kit for 88-98 C1500,600#

Vehicle Fitment

• 1988-1998 Chevrolet C1500 (OBS body style)
• 1988-1998 GMC Sierra 1500 (OBS body style)

Fitment Notes

• Front position, Level 3 performance tier, 600 lb/in. springs
• Requires cutting of the front spring pocket - this is NOT a no-modification bolt-in
• If retaining the factory front sway bar, QA1 adapter kit 1681-117 is required (sold separately)
• Optional QA1 front sway bar (52867) available at checkout

Features

• Integrates tubular upper and lower control arms with double-adjustable coilover shocks
• New bolt-in upper control arm mount improves geometry, reducing anti-dive and tying in the upper shock mount
• Up to 6 in. of front drop with drop spindles, or up to 4 in. with stock spindles
• Independent compression and rebound tuning via double-adjustable valving
• Fully adjustable ride height for a custom stance
• Modernized suspension geometry for improved handling and steering response over factory OBS setup
• 100% dyno-tested and serialized shocks
• Made in the USA

Specifications

• Vehicle Position: Front
• Shock Valving: Double Adjustable
• Spring Rate: 600 lb/in.
• Performance Level: Level 3
• Drop: Up to 6 in. (drop spindles) / up to 4 in. (stock spindles)

Included Components

• Upper and Lower Tubular Control Arms (pair)
• Double-Adjustable Coilover Shocks with 600 lb/in. Springs (pair)
• New Upper Control Arm Mount
• Coilover Mounting Hardware

Product Description

The QA1 52613-D600 is a Level 3 front coilover conversion built for 1988-98 OBS Chevrolet and GMC C1500 owners who want a genuine handling and stance upgrade, not just a spring swap. It replaces the factory control arms and shock setup with tubular arms, a redesigned upper mount, and double-adjustable coilover shocks, giving independent control over compression and rebound along with fully adjustable ride height.

Because it's a Level 3 system, it's built for a meaningful transformation - up to 6 inches of drop with drop spindles - rather than a mild refresh, and the improved geometry is aimed at making a 1990s truck chassis handle more like a modern one. That said, it's a real fabrication job: the front spring pocket needs to be cut, so this is best suited to a planned build rather than a weekend bolt-on.