2008 Cummins 8" Long Arm Coilover Lift Kit (BDS641F)
The giant 6.7 Cummins it's a highway powerhouse, take it to the next level with the control and performance of a Coilover conversion by BDS Suspension with Fox 2.5" Coilovers that are preset for 8" of lift. Coilovers and BDS long arm suspension systems to create the ultimate 8" suspension system. In order to install the Coilovers, BDS has developed a mounting system that bolts directly to the factory coil mounts with only minor trimming/drilling required. This new system not only creates a sturdy mount at the frame but also includes weld in reinforcements at the axle - something other "bolt-on" mounting kits on the market does not address.
Tire & Wheel Combinations:
- 38" x 14.0" w/ 17 x 9 and 4.5"
Notes:
- Designed for single rear-wheel (SRW) models.
- Will not fit Cab and Chassis models
Installation:
- Click Here For Installation Instructions
- Difficulty: 3 (where 1 = easiest and 5 = complicated)
Part Number: BDS641F

Fox 2.5 Remote Reservoir Coilovers
When you want the best in performance and capability, go with FOX. These race-proven FOX 2.5 factory series remote reservoir coilovers up the ante allowing for next-level damper capability and control all neatly packaged. Designed for bolt-on installation, the engineers at BDS and FOX teamed up to offer this race-winning technology into a bolt-on, pre-tuned Coilover designed to perform and provide correct ride height right out of the box. From valving to spring rate, preload, and hose length; designed to take all the guesswork out of setting your vehicle up and are designed to be used with BDS lift systems. These coilovers use a large 2.5" body, 3" coil springs, 7/8" hardened carbon steel shaft, high flow piston, JM92 advanced racing shock oil, CNC machined 6061 T6 ends, and external remote reservoir to improve damper capability across any terrain.
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Coilover Mounting Kit
This Box Kit includes the following products:
- 2 Coilover Upper Mount
- Coilover Drill / Cut Template
- 2 Coilover Lower Support
- 2 Coilover Lower Support w/ Nut
- 2 Reservoir Mount
- Loc-tite
- Bolt pack - Coilover Mount
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Long Arm Box Kit
This Box Kit includes the following products:
- Pitman Arm
- Track Bar Bracket
- 3 Bolt Packs
- 2 Sway Bar Links
- 2 Driver & Passenger Side Sway Bar Mounts
- 2 Driver & Passenger Brakeline Adaptors
- 2 Bump Stop Brackets
- 2 Urethane Bumps Stops
- 2 Steering Stop - Weld On
- 2 Sway Bar Link U-Brackets
- 2 5/8” ID Hourglass Bushings
- 2 3/4” ID Wide Hourglass Bushings
- 2 .625 x .109 x 1.375 Sleeves
- 2 .750 x .090 x 1.575 Sleeves
- Bolt Pack - Sway Bar Hardware
- Bolt Pack - Misc. Hardware
- Bolt Pack - Bumper Spacer
- Rear Brakeline Bracket
- Front Driveshaft Spacer
- Bolt Pack - Driveshaft
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Control Arm Box Kit
This Box Kit includes the following products:
- Driver & Passenger Upper Control Arm
- 2 Lower Control Arm
- 8 UCA Bushing - 3/4” ID
- 4 LCA Bushing - Axle
- 4 LCA Bushing - Frame
- 4 UCA Sleeves .750 x .095 x 2.33
- 2 LCA Sleeves 1.00 x .1875 x 2.60
- 2 LCA Sleeves 1.00 x .120 x 3.25
- 8 90 Degree Grease Zerks
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Control Arm Mounting Kit
This Box Kit includes the following products:
- Driver & Passenger Side Long Arm Bracket
- Bolt Pack
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5" Rear Block Kit - (4" Axle Tube)
This Box Kit includes the following products:
- 2 5" Bump Stop Blocks
- 2 Leaf Pins
- 4 9/16 x 4 x 16-1/4 Round U-Bolts
- 8 9/16 SAE Flat Washers
- 8 9/16 Fine High Nuts
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5" Lift Leaf Spring - (4" Axle Tube) (2x)
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Required if you have selected full Leaf Spring replacements.

U-Bolts - (4"X12.5") (4x)
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Transfer Case Components Indexing Ring - (Automatic)
Choose this option if your driveshaft has 3" or more clearance to the crossmember and you have an automatic transmission. See installation instructions for measurement details.
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