2001-2010 Duramax 4.5" Coilover Lift Kit (BDS740FDSC)

Fits

If you've got an HD Duramax truck it's possible it could use some new suspension! Why not lift it while you're in there with this BDS 4.5" Coilover conversion system. This system eliminates your torsion bars and gives you a much more adjustable alternative. This system builds on the BDS high clearance system design offering more ground clearance, corrects suspension, steer, driveline geometry, and pairs it with the race-proven pedigree of Fox 2.5 factory series Coilovers to soak up the harshest terrain while still offering comfort and control for your daily commute.  

Part Number: BDS740FDSC

• Fox 2.5 Series Remote Reservoir Coilovers with Dual Speed Compression
• Fox 2.0 Series Shocks
• Bolt-On Brackets & Support Gusset to reinforce the upper mount
• Upgraded Upper Control Arms
• Coilover Mounting Brackets
• CNC machined ductile iron steering knuckles
• HD Front Skid Plate & Differential Skid Plate
• Multipoint differential relocation brackets secure the differential, correct CV axle angles
• Upgraded Sway Bar Links
• 3" Rear Block Kit
• Torsion Bar Delete
• High Clearance Crossmembers 
• Front Diff relocation brackets for correct CV angles

Tire & Wheel Combinations:

• 33" x 12.50" w/16 x 8 and 4-1/2" back spacing
• 35" x 12.50" w/17 or 18 x 9 and 5.5" back spacing
• 35" x 12.50" w/20 x 9 and 5.75" back spacing

• Torsion Bar Tool required to load/unload the torsion bars
• Some welding required
• Requires frame bracket modification and differential mount modification
• Traction bars will not fit standard cab/short box models and are designed to work on vehicles with 4" to 8" of lift
• 20" wheels with 5" to 5.75" backspacing is recommended for reduced trimming
• Narrow track knuckle will slightly increase the turning radius
• For tail high stance use #119157 add-a-leaf with the block kit or #069207 with leaf spring kit
• Not Recommended for Suburban / Yukon models with AutoTrac Transfer Case
• Does NOT work with rear Autoride equipped SUV's
• Fits Diesel Models Only

• Click Here For Installation Instructions
• Difficulty: 4 (where 1 = easiest and 5 = complicated)

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• ?

  does this kit increase articulation and improve turning radius

  Articulation will be improved due to coilover conversion and upgraded contorl arms. Turning radius may increase slightly because of steering geometry changes!