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Specially designed for the 2019-2021 Chevy Trail Boss and GMC AT4 trucks, these kits are designed to a higher standard, working within the parameters of the factory suspension and steering geometry to maximize potential while allowing optimal clearance for larger tyres. Due to limitations with the factory UCA that may cause premature wear these kits include high strength adventure series upper control arms to provide long life, additional travel and superior strength.
These arms are a direct replacement to improve strength and increase suspension droop travel. These arms are built from high strength steel, boxed, gusseted and fully welded for strength and rigidity. At the frame mount they use OE style rubber bushings for a long service free life and quiet operation. At the other end these arms feature an indexed ball joint cup designed for use with leveling and lifted applications. High strength ball joints are used with a protective ball joint cap to keep debris out. These upper control arms come fully assembled and ready to bolt in right out of the box.
Specs:
- 3-piece design with top mount spacer and 2 preload spacers to raise ride height without over-extending suspension during droop travel
- High strength adventure series upper control arms allow more travel, increase strength and correct issues caused by kits using the factory UCAs
- Maintains ride quality and handling characteristics
- Allows clearance for 33-34" tyres
- Includes factory protection plus
Recommended tyres and wheels:
Chevrolet
- Wheel size 18x9 | Backspacing 5,5" | Max. tyre size 32x12,5
- Wheel size 20x9 | Backspacing 5,5" | Max. tyre size 32x12,5
- Wheel size 20x9 | Backspacing 5,5-4,5" | Max. tyre size 295/60
- Wheel size 20x9 | Backspacing 5,5-4,5" | Max. tyre size 305/55
- Wheel size 18x9 | Backspacing 5,5-4,5" | Max. tyre size 295/55
- Wheel size 17x9 | Backspacing 5,5-4,5" | Max. tyre size 295/70
GMC
- Wheel size 18x9 | Backspacing 5,5" | Max. tyre size 33x12,5
- Wheel size 20x9 | Backspacing 5,5" | Max. tyre size 33x12,5
- Wheel size 20x9 | Backspacing 5,5" | Max. tyre size 295/60
- Wheel size 20x9 | Backspacing 5,5-4,5" | Max. tyre size 305/55
- Wheel size 18x9 | Backspacing 5,5-4,5" | Max. tyre size 295/55
- Wheel size 17x9 | Backspacing 5,5-4,5" | Max. tyre size 295/70
Notes:
- Fit Silverado TrailBoss ONLY
- Fit fit GMC Sierra AT4 ONLY
- Tires wider than 295/ cannot be installed on factory wheels due to clearance issues to the steering knuckles
- Does NOT fit Adaptive Ride Control (ARC) equipped models.