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 | |

13 Comments on “BDS New Product Announcement #274: Chevy/GMC HD 6.5″ Coilover Upgrade Kits
  • Matt Brooks says:

    Was wondering what the price is to upgrade my 4 1/2 high clearance kit to a coil over system

    • Carter @ BDS Suspension says:

      Hey Matt, price is listed above on the chart with the kit info, The (#735FDSC) 6.5″ coilover upgrade can be used on trucks equipped with either 4.5″ or 6.5″ high clearance (no torsion bar drop) kits, but ultimately you will have 6.5″ of lift up front. Some customers prefer to keep the 3″ rear block kit from their 4.5″ lift kit, others prefer going to the 5″ rear block and u-bolt flip kit. Everything else in your 4.5″ kit will work at 6.5″ of lift. MSRP pricing is listed below, you can also check with your local BDS distributor to see what they will offer you. Distributor lookup is available on our website.

      #735FDSC – C/O upgrade with UCAs, LCAs and mounts – $4346.05 MSRP.
      #021509 – 5″ rear block and u-bolt flip kit – $217.59 MSRP.

  • Gary Melgoza says:

    I really love your kits/products… Will you have a coil over conversion kit for the Chevy/GMC 2500HD 4×4 2001-2010 trucks?

    • Carter @ BDS Suspension says:

      Thanks Gary, there has been a lot of interest in coilover conversion options for the ’01-10 HD trucks. That said company policy dictates we can’t discuss what products may or may not be in the works at this time. As kits hit the shelves we send out new product announcements and add kits to our website.

  • emwry says:

    can I run this kit with the bds 4.5 hc installed already for 01-10? what would be the kicker that I can’t if not?

    • Carter @ BDS Suspension says:

      Hey Emery, this kit is not compatible with the ’01-10 HD trucks, it fits the ’11-18 HD trucks only. At this time we don’t offer coilover conversion options for the ’01-10 HD trucks, but do have kits in the works. Once available we’ll be releasing more information.

  • Emery says:

    I see that u guys made the coilover kit for the 01-10! Good job bout time . Will there be a upgrade kit for 01-10 4.5 and 7 for guys with existing lifts already on?

    • Carter @ BDS Suspension says:

      Hey Emery, we haven’t released the ’01-10 HD C/O kits quite yet, but they’re getting closer. Kits will be available as both complete systems as well as C/O upgrade for current BDS kits

  • emery says:

    right on. I jus seen the bds sema 17 video on YouTube. I’m excited. now all u guys have to do is make a 4 link air ride system for the rear of these trucks that doesn’t cost 9-10 grand installed canadian$ eh

  • emery Brouillette says:

    Hey carter when’s that coil over kit coming out for 01-10? U guys getting close ?

    • Carter @ BDS Suspension says:

      Kits getting close, unfortunately I can’t get into expected release dates or any other info at this time (company policy). Once parts are on the shelf ready to ship we’ll be sending out a new product announcement, adding it to our website and promoting on multiple media outlets.

  • Kevin Hagen says:



    • Carter @ BDS Suspension says:

      Hey Kevin, we offer the UCA kits separately for the ’01-10 HD (2WD/4WD) trucks, #121252 available through your local BDS dealer. MSRP is $735.79


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