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1988-1998 C1500 Coil-Over Conversion Systems

QA1's 88-98 OBS Truck Suspension
Product Description

1988-1998 C1500 Coil-Over Conversion Systems

Add modern performance to a pickup that was designed for utility. With QA1’s bolt-on front and rear systems, not only can you lower your C1500, but you’ll also have ride height adjustability on all four corners, giving you that perfect level stance. Adjustability options let you tailor the system to create the performance desired, so your truck can handle those corners and curves like a sports car.

The Easiest Bolt-In Solution for Adjustable Coil-Overs

Easily bolt on big suspension performance with ride height adjustability and better geometry with these front conversion systems, which integrate control arms with our coil-over shocks to lower the truck and allow room for wider wheels and tires. These systems offer control arm weight savings of 25 lbs. per side over stock, plus up to 7 degrees of caster and a range of +2 to -3 camber – plus, the extended upper ball joint significantly improves camber gain during cornering. The Level 2 system is great for street performance, while the level 3  is the perfect match for OBS owners with competition in mind while still allowing adjustability to cruise to the track in comfort.

QA1 C1500 Front Coil-Over Conversion SystemsQA1 C1500 Front Coil-Over Conversion Systems


LEVEL 2 - huge suspension performance for street trucks

  • Stock or drop of 2” (with drop spindles: 2” to 4” drop)
  • Single adjustable stock mount QA1 Pro-Coil system
  • Bolts back in the factory location


LEVEL 3 - the ultimate performance for your OBS truck

  • Drop of 2” to 4” (with drop spindles: 4” to 6” drop)
  • Double adjustable full coil-over
  • Enhanced geometry by the new bolt-in upper control arm mount, which reduces anti-dive and ties in the upper shock mount


Shocks allow for ride height adjustability and are 100% dyno tested and serialized. Coil-over hardware and all required nuts, bolts, etc. are included. Made in the USA.

Why Be Confined to the Limitations of a Leaf Spring?

Add modern performance to a pickup that was designed for utility – all without removing the bed of the truck. QA1 engineered a unique design offering 4” to 7” drop that maximizes performance without the inherent binding issues of other 4-link systems. With superior control over suspension movement, you can easily dial in the stance for a smooth ride and great handling characteristics.

The systems come with unprecedented adjustability: the panhard bar, torque arm, trailing arms, bracket mounts, and shocks are all adjustable, and they are truly independent of each other, so you don’t have to worry about one adjustment affecting another. Easily bolt in this system – no welding required. Everything needed is included, all the way down to the hardware. 

Sway bars are also available for both front and rear. All QA1 shocks are 100% dyno tested and serialized. All products listed are proudly made in QA1’s Lakeville, Minnesota facility.