2003-2007 Cummins 8" Coilover Lift Kit (BDS653F)
Take your Cummins 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 with 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:
- This truck is available with two different axle sizes, 3.5" or 4". Measure rear axle tube before ordering.
- Will not fit dually applications.
- Although unusual, if driveline vibration occurs, order transfer case drop kit available in options or t-case index kit. #122801 is included in 8" kits, substitute #122802 for manual transmission.
- Exhaust modification will be required for dual rear shock kit 122009 on 6.7L Diesel models.
Installation:
- Click Here For Installation Instructions
- Difficulty: 3 (where 1 = easiest and 5 = complicated)
Part Number: BDS653F

Fox 2.5 Remote Reservoir Coilovers
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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
- Loctite
- Bolt Pack - Coilover Mount
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Long Arm Box Kit
This Box Kit includes the following products:
- Pitman Arm
- Track Bar Bracket
- Bolt Pack
- Driver & Passenger Side Brakeline Adaptor
- 2 Bump Stop Bracket
- 2 Urethane Bump Stops
- Driver & Passenger Sway Bar Mounts
- 2 Steering Stops - Weld Ons
- 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
- Front Driveshaft Spacer
- Bolt Pack - Driveshaft
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Control Arm Box Kit
This Box Kit includes the following products:
- 4 UCA Sleeve .750 x .095 x 2.33
- 2 LCA Sleeve 1.00 x .1875 x 2.60
- 2 LCA Sleeve 1.00 x .120 x 3.25
- 8 90 Degree Grease Zerk
- Driver & Passenger Side Upper Control Arm
- 2 Lower Control Arm
- 8 UCA Bushing - 3/4” ID
- 4 LCA Bushing - Axle
- 4 LCA Bushing - Frame
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Control Arm Mounting Kit
This Box Kit includes the following products:
- Driver & Passenger Side Long Arm Brackets
- Bolt Pack
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Transfer-Case Components Indexing Ring - (Automatic)
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5" Rear Block Kit - (4" Axle Tube)
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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.
No Thanks

U-Bolts - (4"X12.5") (4x)
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