Fabtech K1055 3.5-Inch Ball Joint UCA Lift Kit for 2011-2019 Silverado/Sierra 2500HD/3500HD with Performance Shocks
Fabtech
Fabtech K1055 3.5-Inch Ball Joint UCA Lift Kit for 2011-2019 Silverado/Sierra 2500HD/3500HD with Performance Shocks
Check fitment before ordering
Match the year, make, model, trim and engine in the product details. Review mounting requirements and vehicle modifications. Ask us about this part.
Eligible returns within 30 days of receipt. Items must be unused, with tags and original packaging. Contact Lee Mods before sending anything back. Lee Mods pays return shipping for eligible U.S. returns; no restocking fee. See Returns & Exchanges for full conditions.
One complete Fabtech K1055 3.5-inch Ball Joint upper control arm lift system with Performance shocks. Replacement spindles, tubular upper control arms and forged torsion keys raise the front while the factory torsion bars remain in their stock location.
Vehicle application
For 2011-2019 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD, 2WD or 4WD. Excludes standard-cab trucks, GMC AT4 and Chevrolet Trail Boss models.
Package
One FTS21108 package includes:
- Two FTS7341 front Performance shocks and two FTS7299 rear Performance shocks.
- Driver and passenger machined steering spindles and tubular upper control arms.
- Two high-travel ball joints and two torsion keys.
- Bushings and installation hardware.
No rear lift blocks or U-bolts are included. The rear suspension retains its factory height. Optional FTS21110 rear block/U-bolt kit for 2500HD or FTS21111 for 3500HD is sold separately; vehicle stance can vary.
Wheels and installation
Aftermarket wheels are required; factory wheels and 17-inch wheels cannot be used. Fabtech lists 33/12.50R18 tires on 18x9 wheels or 33/12.50R20 tires on 20x9 wheels, both with 5.75-inch backspacing and minor trimming. Its 35/13.50R18 and 35/13.50R20 combinations use the same respective wheel sizes and backspacing, and require fenderwell sheet-metal cutting. Tires and wheels are not included.
Professional installation and alignment are required. Do not combine this system with another lift device. Read the Fabtech FT21104 instructions and confirm the exact vehicle configuration and wheel clearance before ordering.
WARNING: Cancer and Reproductive Harm-www.P65Warnings.ca.gov.
Your vehicle
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Manufacturer & part identification
Fabtech
| Option | SKU / part reference |
|---|---|
| Standard | K1055 |
Vehicle compatibility
Read the application years, model, trim, engine and exclusions in the description above. A make-level collection or product recommendation alone does not confirm fitment.
Request fitment help →Installation & specifications
Review the manufacturer’s specifications and installation notes above. Confirm required mounting hardware, tools and modifications before ordering. If instructions are not supplied, contact us with the part reference.
Shipping expectations
Processing and delivery vary by product, supplier and destination. Contact us to confirm timing for your part before planning an installation.
Shipping & delivery informationManufacturer warranty
Coverage and exclusions vary by manufacturer and part. Review the supplied product documentation or ask us for the applicable terms.
Warranty information