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.

The Fox 2.5 Factory Series coilovers offer superior dampening for impressive capability to soak up the harshest terrains offroad while offering comfort on your daily commute. 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 coilovers come fully assembled, preset for 6.5" of lift for optimal wheel travel, but can be adjusted between 5.5-7.5" of lift with the use of (#129600) spanner wrench. The new upper control arms are FOX's 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.

Important Kit Notes:

1. Torsion bar tool required to unload the torsion bars.
2. Requires frame bracket and differential modification.
3. Minor welding required for coil-over mount installation.
4. Stock 17" & 18" wheels cannot be reinstalled.
5. Stock 20" x 8.5" wheels with 6" backspacing or less will fit with a max tire size of 35 x 12.50.
6. Models with two piece rear driveshaft may require carrier bearing drop kit (#121612).
7. Coil-over designed for Diesel trucks. Use on gas models requires reducing coil spring preload to set at 6.5" of lift.
8. Will NOT fit dually applications.
9. 3" rear block kit recommended for dually applications, 5" rear block kit will not fit dually applications.
10. Shocks preset for 6.5" of lift for optimal wheel travel, but can be adjusted between 5.5-7.5" of lift with the use of (#129600) spanner wrench.

Rear Block Options:

• 3" block - Will result in a slightly tail-low stance.
• 4" block - Most common for level front/rear stance.
• 5" block (Included) - Will result in a level to slightly tail high stance, integrates a u-bolt flip kit with new spring plate.

Recommended Wheel & Tire:

• 37" x 12.50" w/ 17" x 8" Wide and 4.50" to 4.625" Backspacing
• 37" x 12.50" w/ 18" x 9" Wide and 4.50" to 4.625" Backspacing
• 37" x 12.50" w/ 20" x 9" Wide and 5.00" to 6.000" Backspacing