BDS Suspension is now offering a 6.5" coilover upgrade kit for 2011-2017 Chevy Silverado HD and GMC Sierra/Denali HD trucks. Designed for trucks already equipped with the 4.5" or 6.5" high clearance systems, this coilover upgrade kit eliminates the factory torsion bar setup and converts over to FOX 2.5 factory series coilovers with the remote DSC adjustment for unmatched performance across any terrain. Also included in this upgrade are chromoly upper control arms, fully boxed, internally gusseted lower control arms, bolt-in upper coilover mounts and weld-in support gussets. Take your late model BDS-equipped Chevy/GMC HD to the next level with BDS Suspension and FOX.

Product Description

6.5" Coilover Upgrade Kit

Vehicle Fitment

2011-17 Chevy Silverado 2500HD 2/4WD
2011-17 Chevy Silverado 3500HD 2/4WD SRW
2011-17 Chevy Silverado 3500HD 2/4WD DRW
2011-17 GMC Sierra 2500HD 2/4WD
2011-17 GMC Sierra 3500HD 2/4WD SRW
2011-17 GMC Sierra 3500HD 2/4WD DRW
2011-17 GMC Denali 2500HD 2/4WD
2011-17 GMC Denali 3500HD 2/4WD SRW
2011-17 GMC Denali 3500HD 2/4WD DRW
*6.6L Duramax diesel trucks only

C/O Upgrade Features

FOX 2.5 Coilovers w/ Remote DSC Adjustment
Chromoly UCAs to Improve Travel
Fully Boxed and Gusseted LCAs
Next Level Performance On & Offroad
Compatible with existing 4.5" & 6.5" BDS Lifts
Easy Installation (Only minor welding for gusset)

Kit Info

#735FDSC - $4346.05 MSRP

Compatible Kits

BDS 4.5" High Clearance System (will increase front ride height)
BDS 6.5" High Clearance System

Important Notes

1) For use with BDS 4.5" and 6.5" high clearance lift kits only.
2) Not approved for use with other brand lift kits or as a stand alone upgrade.
3) System cannot be set lower than 6.5" as it will cause alignment issues.

Factory Protection Plus
  • 5-year, 60,000 mile drivetrain Warranty
  • BDS’s exclusive No Fine Print Warranty

Media Gallery

Click thumbnails to view and save the high-res images

HD Coilover Upgrade Kit
HD Coilover Upgrade Kit
HD Coilover Upgrade Kit
DSC Adjustment on FOX 2.5 Coilovers
FOX Chromoly Upper Control Arms
BDS Lower Control Arms
6.5" Coilover Upgrade Installed

Full Product Announcement:

A few months back BDS Suspension introduced the 6.5" coilover conversion high clearance systems, the latest performance option for the 2011-2017 Chevy Silverado HD and GMC Sierra/Denali HD trucks giving next level of performance and comfort to truck owners. These systems allows HD owners the ability to eliminate the rough riding traditional torsion bar suspension in favor of FOX 2.5 factory series remote DSC coilovers and combines them with the tried and true BDS high clearance IFS systems to truely unmatched performance on and offroad. For trucks already equipped with the non-coilover BDS 4.5" and 6.5" High Clearance Systems BDS is now offering an upgrade kit with all the components needed to convert over to the 6.5" coilover setup.

At the heart of this upgrade is a pair of FOX 2.5 Factory Series Coilover with remote DSC reservoir. These coilovers offer vastly superior dampening for impressive capability to soak up the harshest terrains offroad while offering comfort on your daily commute. These FOX coilovers feature a smooth bore and honed seamless alloy body, 7/8" hardened stainless steel shaft, FOX coil springs, black anodized machined 6061-T6 billet aluminum mounts and FOX’s DSC (dual speed compression) adjustment technology. The DSC adjustment allows for easy adjustment of the vehicle’s suspension compression dampening to dial in the ideal ride performance to soak up the bumps, both large and small. The DSC has 12 adjustment points for the high speed compression as well as 10 adjustment points for the low speed compression allowing you to make large or small changes to further improve your performance. Adjustments can be made by simply twisting the "blue" high speed and "gold" low speed compression knobs located on the end of the remote reservoir of the FOX 2.5 coilovers. No tools or shop adjustments needed, allowing you to tune the suspension out on the trail. The coilovers come fully assembled, preset for 6.5" of lift for optimal wheel travel. To mount the coilovers BDS supplies a bolt-on bracket that installs on the frame in the shock mount location. A weld-in support gusset is used to reinforce the upper mount, however still allows the kit to be completely reversible if the owner ever chooses to revert back to the torsion bar style suspension and upgrade the suspension on another truck.

In addition to replacing the factory torsion bars, the upper and lower control arms are upgraded to improved strength, travel, and accommodate the new coilovers. The uppers are the new performance upper control arms designed specifically for this system to integrate with the 2.5 coilovers. The arms are fabricated from large 1.5" OD x .120-wall chromoly tubing, fully TIG welded for the highest quality, strength and durability. The arms utilize premium Moog brand ball joints and factory style rubber bushings for smooth, quiet operation and superior durability when compared to arms with uni-balls, poly bushings or heims. The ball joint cups are repositioned for optimal performance allowing a 30% improvement in wheel travel. These upper control arms are finished in a durable black powdercoat and include a billet aluminum ball joint dust cap. The control arms come fully assembled for easy install right out of the box. To compliment the uppers, the new lower control arms are built from high strength steel, fully boxed with internally gusseted. These lower arms integrate new reinforced lower coilover mounts and similar to the uppers use durometer specific rubber bushings at the frame mount and high quality Moog ball joints at the knuckle mount for quiet, low maintenance operation.

If you're looking to get more out of your BDS equipped late model HD then take it to the next level with this 6.5" coilover upgrade kit from BDS Suspension and FOX.

© BDS Suspension, 491 W. Garfield Ave. Coldwater, MI 49036
(517) 279-2135 | |