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Earlier this year BDS Suspension released the 2.5" Coilover Conversion System for 2011+ Chevy and GMC HD trucks bringing a new level of performance and comfort to GM truck owners with FOX coilovers. Building on the success of that system, BDS is excited to announce the new 6.5" Coilover Conversion High Clearance System for 2011-2016 GM 2500/3500HD trucks. Engineered to improve your truck's performance over any terrain, these systems eliminate the rough riding factory torsion bars in favor of FOX factory series 2.5 DSC coilovers allowing clearance for 37" tires. These new coilover systems offer premium on road comfort with superior offroad dampening capability and improved suspension travel. As with all BDS products, these new kits are backed by Factory Protection Plus for BDS's No Fine Print Warranty and 5-year, 100,000-mile drivetrain warranty. Take your late model HD to the next level with BDS and FOX.

Product Description

6.5" Coilover Conversion Suspension System

Vehicle Fitment

2011-2016 Chevy Silverado 2500/3500HD*
2011-2016 GMC Sierra 2500/3500HD*
2011-2016 GMC Denali 2500/3500HD*
 *2WD & 4WD, Diesel Only

6.5'' C/O System Features

FOX 2.5 Remote DSC Coilovers
BDS Performance UCAs Improve Travel
BDS Fully Boxed and Gusseted LCAs
Multipoint Diff Relocation System
BDS Front Skid and Diff Skid Plate
Next Level Performance On & Offroad
Allows fitment of up to 37" Tires

MSRP

$6239.76 (727FDSC/728FDSC)
$6144.79 (729FDSC/730FDSC)

Kit ID Number(s)

#727FDSC (5" rear w/o overload)
#728FDSC (5" rear w/ overload)
#729FDSC (3" rear w/o overload)
#730FDSC (3" rear w/ overload)

Rec'd Max Wheel/Tire Specs

37x12.50 Tires/17x8 Wheels (4.5-4.625" BSing)
37x12.50 Tires/18x9 Wheels (4.5-4.625" BSing)
37x12.50 Tires/20x9 Wheels (4.5-6" BSing)

Available Accessories

#121408/123409 - RECOIL Traction Bar Kit
#55379/85430 - NX2 Steering Stabilizer (2016)
#85425 - NX2 Steering Stabilizer (2011-2016)
#121612 - Carrier Bearing Drop
#129600 - C/O Adjustment Spanner Wrench

Factory Protection Plus
  • 5-year, 100,000 mile drivetrain warranty
  • BDS’s exclusive No Fine Print Warranty

© BDS Suspension, 491 W. Garfield Ave. Coldwater, MI 49036
(517) 279-2135 | bds-suspension.com | sales-bds@ridefox.com

BDS Suspension expanded its FOX coilover lineup with 6.5" coilover conversion high clearance systems for the 2011-2016 Chevy Silverado HD and GMC Sierra/Denali HD trucks giving a new level of performance and comfort to truck owners. This new systems joins the existing 2.5" coilover conversion allowing HD owners the ability to eliminate the rough riding traditional torsion bar suspension in favor of FOX 2.5 factory series remote DSC coilovers. This system builds on the tried and true BDS high clearance IFS systems now integrating the coilover conversion for improved performance over any terrain. These new coilover systems have been engineered and tested for improved comfort, fade free performance, and increased suspension travel.

The new 6.5" coilover system is a game changer for HD performance. At the heart of the system 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 new performance series 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 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.

Along with the coilover conversion, this 6.5" system includes a pair of one-piece laser cut high clearance crossmembers, CNC machined ductile iron steering knuckles to correct tie rod angles, heavy duty front skid plate and differential skid plate to increase protection, multipoint differential relocation brackets to secure differential and correct CV axle angles, longer sway bar links and braided stainless steel extended brake lines. In the rear, BDS offer both a 3" and 5" rear block and u-bolt kit to lift and level the stance. The 5" rear block kit includes a u-bolt flip kit with new spring plate and the preferred round u-bolts for increased strength and ground clearance. To compliment the performance in the front this system includes precision tuned FOX 2.0 IFP gas shocks in the rear. This system allows for up to 37" tires to be installed.

If you're looking to get more out of your 2011+ Chevy Silverado HD or GMC Sierra/Denali HD look to BDS Suspension and the new 6.5" Coilover Conversion System. Head to the BDS website for more info and stop by your local BDS distributor to take your HD to the next level!

Lift Systems

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BDS 6.5" High Clearance Coilover Conversion System
Remote DSC Reservoir (Dual Speed Compression)

Application Images

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BDS 6.5" High Clearance Coilover Conversion System
45 Comments on “BDS New Product Announcement #264: 2011+ Chevy/GMC HD 6.5″ Coilover Conversion Systems
  • John D. says:

    Is it possible to purchase just the coilovers themselves from this kit? I already have a 7″ lift on my 2500HD and I just want to convert to coilovers.

    Reply
    • Carter @ BDS Suspension says:

      Hey John,
      while the coilovers can be purchased separately from the complete kit, other components are needed to complete the conversion such as our lower control arms for the lower C/O mount and the upper conversion brackets to mount the C/O and reservoir. To get full potential from the kit we recommend the upper control arms as well to keep form maxing out the upper ball joints. The UCA/LCA are designed specifically for the ’11+ HD trucks and won’t fit a ’01-10 HD. For more on the topic contact BDS sales/tech support at (517) 279-2135

      Reply
  • Joe says:

    Just ordered 2017 Chevy 2500hd diesel 10 weeks til it comes in. Is this lift compatible for the 2017? If not do you have a release date for the 6.5 coil over?
    Thanks

    Reply
    • Carter @ BDS Suspension says:

      Hey Joe, we don’t anticipate any changes between the 2011-2016 and 2017 Chevy/GMC HD trucks suspension-wise. That said we haven’t had a chance to get our hands on a 2017 HD to confirm fitment so at this time we’re not listing 2017 HD trucks on our website

      Reply
  • Ignacio says:

    Can you get me a quote on your lifts? I’m running some 295/60R20 tires on it and it rubs. Would you recommend a 6 or can I get away with a 4 inch lift?

    Reply
    • Carter @ BDS Suspension says:

      Hey Ignacio, pricing would depend on the options you go with. We have a kit customizer tool to get accurate MSRP on our website at http://bds-suspension.com. Head over to check out the kit options, pricing, and see our recommendations for tire/wheel size with each kit.

      Reply
  • O says:

    Hi
    So I got 2500HD 6″ fabtech 37″ tire, as I understud I need the upper & lower arm and coil over shocks to stick to existing FT lift kit.
    Is that it or what else do I need?

    Reply
    • Carter @ BDS Suspension says:

      While we haven’t confirmed compatibility with the Fabtech system, the control arms and coilover bolt into factory locations and work with drop crossmember so you’ll likely just needing the UCA, LCA, coilover and upper coilover mount/brace to convert your current system. For more on the topic I’d recommend contacting BDS sales/tech support directly at (517) 279-2135 or sales-bds@sporttruckusainc.com

      Reply
  • Chris says:

    Need to actually spindle kit for a 1989 Chevy Scottsdale 2 Will Dr. 2500

    Reply
    • Carter @ BDS Suspension says:

      Hey Chris, unfortunately we don’t offer an suspension lifts for the ’88-00 GM 2500 trucks, 2wd or 4wd

      Reply
  • Kevin "Pop" Voyles says:

    Liking this new lift seen on “EXTREME OFFROAD” (PowernationTV). Wondering if you offer this new lift kit for a 2000 Tahoe LS with air ride. Shocks are blown so considering a lift.

    Reply
    • Carter @ BDS Suspension says:

      Hey Kevin, we don’t offer a similar C/O conversion to fit the ’00-06 Chevy Tahoe. We do offer 4.5″ and 6.5″ Lift Kits to fit your Tahoe, however on the auto-ride equipped models our kits uses a shock extension to retain functionality of the auto-ride system. You can install our NX2 or FOX shocks in their place, but you’ll have a “serve auto-ride” light on the dash. For more on the kits head to http://bds-suspension.com/kit-customizer?kid=183H. For more on the topic contact BDS sales/tech support at (517) 279-2135 or sales-bds@sporttruckusainc.com

      Reply
  • Rob Dog says:

    I have an ’05 H2. Do you make a kit for my truck?

    Reply
    • Carter @ BDS Suspension says:

      Hey Rob, unfortunately we don’t offer kits for the H2 any longer. We discontinued the 6.5″ kit he had for it a few years back due to limited interest.

      Reply
  • DMarcus Davis says:

    Is there any way i could do a 4 inch lift with a coilover conversion on 14 and up 2500hds. Didnt see a option for coversion on the site. I dont really need a 6inch and 3inch would be fine but i would like 4inch more

    Reply
    • Carter @ BDS Suspension says:

      Hey DMarcus, we don’t offer any coilover options between the 2-3″ and the 6.5″ kits currently available for the 2011+ GM 2500/3500 HD trucks. That said there is some adjustability with where you set the ride height, but as you lift/lower it will effect CV axle angle, ball joint positioning, suspension travel, etc as the kits were designed to maximize travel at the 2-3″ and 6.5″ lift heights. For more on the topic contact BDS tech support at (517) 279-2135

      Reply
  • Jesus Martinez says:

    Hello! Awesome suspension package. Can this be applied to a 3500 dually? Thank you.

    Reply
    • Carter @ BDS Suspension says:

      Hey Jesus, these kits work on all 2500HD, 3500HD SRW, and 3500HD DRW models. Due to the rear wheel positioning we recommend the 3″ rear block kit. The 5″ block uses a u-bolt flip that places the u-bolt plate too close to the inside tire when wider tires are used.

      Reply
  • Tracy says:

    What do u carry for my 06 LBZ 2500 ,

    Reply
  • Brandon says:

    How much usable suspension travel are you guys getting with this 6.5″ coil over kit on the four wheel drives? I read all the descriptions but I didn’t see this mentioned anywhere.

    Reply
    • Carter @ BDS Suspension says:

      Hey Brandon,
      Similar to the 2-3″ coilover conversion these will improve suspension travel by 30% over the the stock suspension. The up travel remains similar to the standard lift kit, the droop travel is where most of the improvements are.

      Reply
  • Alejan says:

    I bought them a Transfer Case Indexing Ring Kit for a Dodge 2500 2015 and and I want to know if they can send me the installation guide in Spanish.
    Thanks, Alejandro.

    Reply
    • Carter @ BDS Suspension says:

      Unfortunately we don’t offer the installation instructions in Spanish. One option you have to translate the instructions would be to open the .pdf instructions and use Google Translate to copy/paste the steps over to Spanish using their translator tool.

      Reply
  • Ryan says:

    Installed the 2-4 coilover kit on my 2015 gmc denali 2500hd.

    After install truck sat 2″ lower than when I had a leveling kit on it, basically back to stock level… went to start adjusting shocks and confused how expected to crank coils while on the truck and reservoir line in the way… If this kit is setup specifically for these pickups why wouldn’t the shocks be setup for the advertised lift??? Furthermore, why would anyone install the rear blocks setup with the front still raked down with the setup sent as it was??? Was very excited to finally see a coil over kit for the HD GM’s that wasn’t to the level of long travel and chase truck setups out there but confused as to the engineering and/or setup shipped to me.

    Reply
    • Carter @ BDS Suspension says:

      Ryan, I’m sorry the kits isn’t all you expected, be we are here to help assist you. BDS tech support will be your best resource to assistance (517) 279-2135 or tech-bds@sporttruckusainc.com. That said I’ll try to offer some assistance answer some of your questions. The kit is designed as a 2-3″ lift kit (not 2-4″) for the diesel HD trucks with the coilover preload set to 2.5″ of lift for optimal up/down travel. You can make ride quality adjustments on the DSC adjusters while the coilovers are installed, but to adjust ride height its easiest to remove the coilovers from the vehicle and use a spanner wrench (#129600) to adjust the preload collar. As for the rear block, some customers prefer to install the rear block to keep a slight rake to the truck while others do not, we offer the kit with or without the rear block kit to achieve your designed stance.

      I’d recommend contacting BDS tech support on to discuss your truck further as they are better equipped to offer assistance. They will want the ride height measurements (center of hub up to top of fender opening) to check the amount of lift achieved and possibly some photos of the installed setup so they can get a better idea of what’s going on with your Denali HD. BDS Tech Support – (517) 279-2135 or tech-bds@sporttruckusainc.com

      Reply
  • Dom says:

    Really like the looks of your coil over system. Do you make a 4 inch lift with voil overs… I don’t want to lift my truck to 6.5 inches…

    Reply
    • Carter @ BDS Suspension says:

      Hey Dom, at this time we’re only offering the 2.5″ and the 6.5″ Coilover Conversions for the late model HD trucks. We have had customers adjust preload for a lower ride height, but we do not recommend it as it may cause alignment issues.

      Reply
  • Justin Keiper says:

    How hard would it be to convert from an existing 2-3″ coilover conversion kit to the 4-6″ kit on a 2015 GMC 2500?

    Thanks,
    -JK

    Reply
    • Carter @ BDS Suspension says:

      Hey Justin, based on the components you already have you would just need the base 6.5″ kit components to add. The UCA/LCA will carry over to the 6.5″ Coilover System. You’ll need to check with BDS tech support on if the coilovers can be adjusted/modified to work at the taller ride height. For more info contact tech support at (517) 279-2135 or tech-bds@sporttruckusainc.com

      Reply
  • Luke says:

    Hey, was just curious as to how much an 8″ lift would cost?? On average.

    Reply
    • Carter @ BDS Suspension says:

      Hey Luke, what vehicle are you asking about? We don’t offer an 8″ lift for the late model Chevy/GMC HD trucks, but do offer them for other applications. Best place to check out current kit offerings and get pricing is the BDS website, http://bds-suspension.com

      Reply
  • Dan says:

    Have you determined if the 6.5? Coilover System will work on the 2017’s? What is the ride quality compared to stock? Is there someplace in the Pacific NW were a guy could ride in a converted truck?

    Reply
    • Carter @ BDS Suspension says:

      Hey Dan, since this initial announcement these kits have been approved for the 2017 models, https://blog.bds-suspension.com/?p=14047. The C/O conversion ride quality and performance is a huge improvement to the standard torsion bar setups. We’ve sold several kits all to great review/feedback from customers, however we don’t keep tabs on where each kit is located. Our personal promotional truck (Project Raider 2.0) is based in Colorado and attends events around that area. Another truck that comes to mind is Diesel World Magazine’s 2016 GMC 2500HD Dually in Idaho. You can also check with your local DBS dealer to see if he has can set you up with a test drive on any trucks they have lineup up at their shop, http://bds-suspension.com/distributor-lookup

      Reply
  • Gavin says:

    In your 6.5″ c/o kit for late model Gmc 2500HD is it possible to get any more lift out of it? I want to avoid cutting the metal bumper when running 37’s. I’m okay cutting the plastic valence. Thx.

    Reply
    • Carter @ BDS Suspension says:

      Hey Gavin,
      While the coilovers can physically be adjusted taller, its not recommended to raise the ride height as it will begin to limit droop travel, and create more extreme operating angles for the CV axles and steering.

      Reply
  • Dan says:

    Hey Carter,
    With the plastic valence removed & without cutting the bumper, what is the largest tire size accommodation with the 6.5″ c/o kit?

    Reply
    • Carter @ BDS Suspension says:

      You’ll still want to follow the wheel/tire recommendations listed above (and on our website). Front valance trimming is common to fit 37s, so removing won’t allow for larger tires. To go larger or fit wider wheels you’ll need to trim into the bumper/inner fender and potentially the backside of the fender.

      Reply
  • Jose says:

    Jose

    I have 2015 Denali DRW I have 8″ to play for a lift kit, since I tow gooseneck trailers I want to keep the height to a limit, I also want to use a c/o kit my consern is I don’t want to pay $$$$$ to just lift 2-3 inch, can you tell me what’s my overall height achievement with the 2-3″ c/o.

    Thank you

    Reply
    • Carter @ BDS Suspension says:

      Hey Jose, the 2-3″ coilover conversion will provide just that, 2-3″ of lift up front and 2″ of lift in the rear. The coilovers are adjustable, they come pretuned for 2.5″ of lift and we recommend setting them up between 2-3″ of lift for optimal performance. The additional height will come from the larger tires you install. Its hard to say exactly how much taller the mounting mount will be as it would depend on your current and planned tires. Best way to estimate is take your add 50% of the difference between current and planned tire size (i.e. 32″ to 34″ will add 1″ of overall height from the tires). If you have 8″ to work with you may want to consider our 6.5″ coilover system as well. On the DRW trucks we recommend using our 3″ rear block and you can run either 35-37″ tires. This will still set you under the 8″ mark for mounting point for your gooseneck trailer.

      Reply
  • Jose says:

    Hey Carter

    The shop is ordering the 2-3 and 35″ tires with 20″ rims is this going to work with out trimming the bumpers?

    Thanks

    After looking and adding I realized that this set up will give me 5.5″ of height of what I have now.

    Reply
    • Carter @ BDS Suspension says:

      Hey Jose, short answer is yes you’ll likely need to do some trimming on the front bumper lower valance and rear inner fender liner to fit 35s on the 2-3″ lift. Its hard to say how much trimming will be needed without knowing the wheel width and backspacing or how the truck will be driven (offroad use will require more trimming). We include our recommended specs on website at http://bds-suspension.com/product?kid=723FDSC. The coilovers come preset for 2.5″ of lift so the preload can be adjusted to achieve 3″ of lift using #129600 spanner wrench. Your local shop likely already has the wrench to make the adjustment.

      Reply
  • Voytek opalski says:

    I had this kit installed on my 2016 GMC sierra Denali hd. It was done in the beginning of 2017 and since I had to replace both rear shocks due to a seal failure and oil leak(I upgraded them to ones with the reservoir) unfortunately the new ones are showing significant leak again. They are probably 1.5yr old. My big issue is with a front coils being completely covered in rust! It started to show about a year ago and now they are all rusty. Will you guys be backing up this issue under your warranty and what should I do. Other than that I put around 40k miles with your kit and really enjoy it.

    Reply
    • Carter @ BDS Suspension says:

      Hello Voytek, thanks for reaching out. I’m sorry to hear you’ve had some issues with the FOX shocks leaking. Shocks are a wearable item and depending on how they are used (climate, terrain, etc.) will effect the lifespan of a shock, although its typically not due to seal failure and the shocks come with a limited lifetime (1-year replacement) warranty. The outer appearance of parts like the shock body or coil spring is not typically covered under warranty as it won’t effect the performance. That said warranty topics aren’t handled by our customer service department so you would need to contact them directly. You can send photos to tech-bds@ridefox.com or call (517) 279-2135.

      Reply

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