2001-2010 Duramax 4.5" Lift Coilover Upgrade Kit (BDS742FDSC)

Important: This kit is strictly to upgrade to Coilovers specific to the lift height you currently have in your truck.

Fits

Coilovers arent just to lower your vehicle! If you're serious about performance then BDS offers this conversion kit for your GMC/ Chevrolet. With high-quality parts, this kit will improve handling at high speeds and overall ride quality. FOX 2.5 Coilovers w/ Remote DSC Adjustment, BDS UCAs to Improve Travel, Fully Boxed and Gusseted LCAs Next Level Performance On & Off-road compatible with existing 4.5" & 6.5" BDS Lifts for easy installation.

Part Number: BDS742FDSC

• 6.5" Lift
• Fully TIG welded Components
• Ball joint cups are repositioned for optimal performance allowing a 30% improvement in wheel travel
•  Moog brand ball joints & factory style rubber bushings for smooth, quiet operation and superior durability
• FOX's DSC (dual speed compression)
• 6061-T6 Billet Aluminum mounts
• 12 adjustment points for high-speed compression
• 10 adjustment points for low-speed compression
• Allows you to adjust on trails
•  Replaces the factory torsion bars, the upper and lower control arms are upgraded to improve strength, travel, and accommodate the new coilovers.
• Superior dampening for the harshest terrains 
• Performance UCAs for increased strength and travel
• Bolt-on design requires no welding
• Compatible with BDS high clearance kits
• Eliminates rough riding torsion bars

Includes:

• FOX Coil Springs
• One Coilover Conversion Upper Mount - Drivers & Passenger Side
• One Weld-In Support Guesset - Driver & Passenger Side
• One Coilover Conversion Resivoir Mount - Driver & Passenger Side
• Two Sway Bar Links
• Two Moog Ball Joints
• Two Rear Bump Stop Extension
• Two Front Bump Stop Extension 
• One Front & Rear Lower Bushing
• ..And More - (See Installation Instructions for full list)

Wheel & Tire Fitment:

• 6.5” Kit: 37 x 12.50 on 17” x 9” w/ 4-1/2 to 4-5/8” Backspacing
• 37 x 12.50 on 18” x 9” w/ 4-1/2 to 4-5/8” Backspacing
• 37 x 12.50 on 20” x 9” w/ 5 to 5.5” Backspacing
• Larger than 20”, use 20” wheel specs

• For use with 6.5" high clearance lift kits only.
• Not approved for use with other brand lift kits or as a stand-alone upgrade.
• This System cannot be set lower than 6.5" as it will cause alignment issues.
• Stock 20” x 8.5” wheels are not recommended, however, they can be reinstalled if necessary. Stock 17” and 18” wheels will not fit back on the vehicle once this suspension system is installed.
• Torsion bar tool required to unload torsion bars
• Requires frame bracket modification
• Coilovers are preset for diesel, gas models will require preload adjustment (use #129600 spanner wrench)
• Gas models will require exhaust modification

• Supplemental Drivetrain Limited Protection - 5 Year/60,000 Miles on Ford, Nissan, & Toyota vehicles and 5 Year/100,000 Miles on Dodge/Ram, GMC, & Jeep vehicles.
• Free, no cost protection for BDS customers
• Could save thousands of dollars on possible repairs
• An easy online registration process
• Available for most late-model vehicles