Numerous vehicles take advantage of the attributes of aluminum extrusions to produce lightweight and long-lasting, safety-enhancing, aluminum rockers, which are also referred to as sills.
Select the vehicle below to learn more.


2022 GMC Hummer EV
Steel bracket is attached with rivets. Between steel and aluminum is a polymer adhesive to prevent galvanic corrosion.


2015 Ford F-150
Metrics to Success in Body and Chassis Extrusions:
- Tight Tolerances
- Controlled aluminum alloy grain structure
- Straightness (Profile Tolerances)
- Stringent mechanical property requirements
- Versatile to various assembly techniques



BMW i3 EV
One-piece rocker panel reinforcement
- Multi-hollow
- Structural extrusion
- Efficient product performance


2024 Tesla Model 3
Extrusion Content:
- Rails - front
- Rockers


2022 Porsche Taycan EV
Rocker Structure
- Extruded aluminum rocker protects battery pack and passenger compartment


Hyundai IONIQ 5
Extrusion Benefits
- Passenger and battery protection
- Tight tolerances
- Multi-hollow extrusion
- Long length, straight


Audi E-TRON GT
Extrusion Content:
- Rails
- Rockers
- Bumper Beam
- Door intrusion beam


BMW i7 xDrive 60
Extrusion benefits:
- Passenger and battery protection
- Tight tolerances
- Multi-hollow extrusion
- Long length, straight




2023 Tesla Model S Plaid
Extrusion Content
- Rails
- Rockers
- Cross-members including toe board




2024 Chevrolet Blazer EV
Extrusion: 6082-T6 Rocker
This rocker is common to other vehicles within GM’s BEV Architecture. In addition to the Blazer EV, the other models include:
- Buick Electra E5
- Buick Electra E4
- Cadillac Optiq
- Chevy Equinox EV
- Cadillac LYRIQ
- Honda Prologue
- Acura ZDX EV
- Future Variants


2023 Lexus RZ
Extrusions: 6-Hollow Rocker/Battery Protection


2023 Tesla Model Y
Extrusion Content:
- Rear rails
- Rockers
- Cross-member


2025 Volvo EX-30
Extrusion Content:
- Bumpers
- Rails
- Rockers
Ready to get started? Find an extruder