2.5″ DSC Coilovers Billet Series Summit Kit | 19+ Silverado/Sierra 1500/ZR2/AT4X – Peak Suspension

2.5″ DSC Coilovers Billet Series Summit Kit

Premium Performance Upgrade for Silverado & Sierra 1500 / ZR2 / AT4X

Take your 2019+ Chevrolet Silverado or GMC Sierra to the next level with the Peak 2.5” DSC Coilover Suspension System – the ultimate bolt-on solution for serious off-road performance and daily drivability. Designed, engineered, and built in the USA, this system delivers OE-fit installation with no cutting, welding, or permanent modifications required.

This kit is a complete front-to-rear suspension upgrade featuring our hand-assembled 2.5” DSC Coilovers, remote-reservoir rear shocks, and precision-machined Peak Billet Upper Control Arms for maximum strength and articulation.

Why Upgrade?

While GM’s Multimatic DSSV shocks are excellent in factory trim, they are position-sensitive, non-serviceable, and limited in how much lift they can support before ride quality suffers. The Peak 2.5” DSC Coilover System solves these limitations with a fully rebuildable, height-adjustable damper that allows you to tune your truck for any terrain while maintaining peak ride quality.

Technical Highlights

• 2.5” Remote Reservoir Coilovers – Increased oil volume for cooler operation and fade-free performance

• DSC (Dual Speed Compression) Adjusters – Fine-tune high-speed and low-speed compression independently for perfect on-road comfort and off-road control

• Height Adjustable – Achieve up to 2.25” of front lift for improved ground clearance and 35” tire fitment

• Billet Upper Control Arms – CNC-machined from 6061-T6 aluminum, optimized for proper suspension geometry and added strength

• Rebuildable & Serviceable Design – Ensures a lifetime of performance and easy maintenance

• Pinch-Bolt Coil Adjuster – Secure preload adjustment without damaging threads

• Vehicle-Specific Valving – Tuned specifically for Silverado ZR2 and Sierra AT4 platforms

Kit Includes

• (2) Front 2.5” DSC Coilovers

• (2) Rear Remote-Reservoir Shocks

• (2) Peak Billet Upper Control Arms

• Rear 1” Lift Blocks & Hardware

• Shock Wrench for Easy Adjustments

Fitment

• 2019+ Chevrolet Silverado 1500

• 2022+ Silverado ZR2 / GMC Sierra AT4 / AT4X

Wheel/Tire Fitment Note: Aftermarket wheels or spacers required. Recommended offset range: -12 to +12 for best UCA clearance and minimal trimming.

Peak Quality Guarantee

All Peak coilovers are hand-built, precision-machined, and dyno-tested for consistency. As with any high-demand performance product, please allow up to 8 weeks lead time if your kit is not in stock.

***In order to achieve proper fitment, aftermarket wheels or wheel spacers are required. Offset range of -12 to +12 is recommended for minimal or no trimming as well as upper control arm clearance. . 

**As with any high quality, high demand product we do the best we can to keep our coilovers in stock. In the event that we don’t have them in stock, coilover production runs can take up to 8 weeks

Trimming and Wheel Tire Fitment Video: How To Fit 35s on your Silverado ZR2

Peak Suspension Instructions Page