The Story
Fits: 2011 thru 2019 Chevy Silverado/GMC Sierra 2500HD/3500HD LML/L5P Duramax Diesel
The DmaxStore XD Upper Control Arms are a direct stock-geometry forged replacement engineered for Duramax owners who want OE-correct fitment with improved durability in the areas that matter most. Part of the DmaxStore XD steering and suspension line, these control arms retain factory ride height and alignment while upgrading both the ball joint construction and joint mounting area for longer service life.
While factory upper control arms are forged, the XD design features a reinforced ball joint area with increased material around the joint boss, improving load distribution and reducing long-term stress compared to stock arms. Paired with self-lubricating sintered metal ball joint bearings, these arms deliver smoother articulation, increased wear resistance, and dependable performance under daily driving, towing, and high-mileage use.
Each arm comes fully assembled with OE-style rubber bushings featuring knurling, maintaining factory NVH characteristics while improving bushing retention and stability over time.
Features:
- Forged Steel Construction - Maintains OEM forging characteristics with improved structural design.
- Reinforced Ball Joint Area - Increased material around the ball joint boss improves strength and reduces stress concentration versus factory arms.
- Sintered Metal Ball Joint Bearings - Self-lubricating design provides smoother articulation, increased durability, and longer service life compared to conventional bearing materials.
- Stock Geometry Replacement - Retains factory ride height, suspension geometry, and alignment specifications.
- OE-Style Rubber Bushings with Knurling - Preserves factory ride quality while enhancing bushing retention and stability.
- Fully Assembled & Ready to Install - Ball joints and bushings pre-installed to reduce labor and downtime.
- Direct Bolt-In Fitment - No modifications required.
Includes:
- 2 Complete XD Upper Control Arms
- New bushings
- New ball joints
Optional:
- Kryptonite Alignment Pins
- Kryptonite Cam Bolt Kit (will Not work with a control arm drop lift kit)
Replaces Part#:
- GM 20924215
Warranty:
- (Dmax XD Warranty) Dmaxstore XD Steering and suspension parts come with a 3 year unlimited mileage warranty to the original purchaser. Warranty period begins at date of purchase. If a failure occurs, Dmaxstore will replace the failed part only once it has been received at our facility. Shipping costs are not included under the warranty.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Fits: 2011 thru 2019 Chevy Silverado/GMC Sierra 2500HD/3500HD LML/L5P Duramax Diesel
The DmaxStore XD Upper Control Arms are a direct stock-geometry forged replacement engineered for Duramax owners who want OE-correct fitment with improved durability in the areas that matter most. Part of the DmaxStore XD steering and suspension line, these control arms retain factory ride height and alignment while upgrading both the ball joint construction and joint mounting area for longer service life.
While factory upper control arms are forged, the XD design features a reinforced ball joint area with increased material around the joint boss, improving load distribution and reducing long-term stress compared to stock arms. Paired with self-lubricating sintered metal ball joint bearings, these arms deliver smoother articulation, increased wear resistance, and dependable performance under daily driving, towing, and high-mileage use.
Each arm comes fully assembled with OE-style rubber bushings featuring knurling, maintaining factory NVH characteristics while improving bushing retention and stability over time.
Features:
- Forged Steel Construction - Maintains OEM forging characteristics with improved structural design.
- Reinforced Ball Joint Area - Increased material around the ball joint boss improves strength and reduces stress concentration versus factory arms.
- Sintered Metal Ball Joint Bearings - Self-lubricating design provides smoother articulation, increased durability, and longer service life compared to conventional bearing materials.
- Stock Geometry Replacement - Retains factory ride height, suspension geometry, and alignment specifications.
- OE-Style Rubber Bushings with Knurling - Preserves factory ride quality while enhancing bushing retention and stability.
- Fully Assembled & Ready to Install - Ball joints and bushings pre-installed to reduce labor and downtime.
- Direct Bolt-In Fitment - No modifications required.
Includes:
- 2 Complete XD Upper Control Arms
- New bushings
- New ball joints
Optional:
- Kryptonite Alignment Pins
- Kryptonite Cam Bolt Kit (will Not work with a control arm drop lift kit)
Replaces Part#:
- GM 20924215
Warranty:
- (Dmax XD Warranty) Dmaxstore XD Steering and suspension parts come with a 3 year unlimited mileage warranty to the original purchaser. Warranty period begins at date of purchase. If a failure occurs, Dmaxstore will replace the failed part only once it has been received at our facility. Shipping costs are not included under the warranty.
