Get yours today!
In the last 7 days
Delivery timeframe shown above at checkout
Unlimited lifetime support, always available.

The K2 System CrossRail 48 XL 166 Rail Dark, identified by part number 4000705, is a premium-quality, German-engineered solution designed for both residential and commercial solar installations. With its advanced features and optimal design, this system is crafted to provide reliable support and efficient installation, enhancing the overall performance of solar setups. The inclusion of universal components and innovative attachments ensures versatility across various roof types, making it a perfect choice for any project.
The K2 System offers exceptional quality, built on German engineering principles. This feature guarantees durability and performance for your solar installations, ensuring that they last for years and withstand various environmental conditions.
This product includes four different rail sizes, allowing it to adapt to all structural conditions seamlessly. This versatility ensures that users can choose the right fit for their specific solar requirements, enhancing usability across multiple scenarios.
With universal components that are compatible with all types of rails, the K2 System simplifies the installation process. This design reduces the need for multiple parts, making it easier for installers to work efficiently and effectively.
The system features two innovative components that allow for conversion into Shared Rail or Tilt Up configurations. This flexibility enables installers to modify the setup according to the specific needs of the project, optimizing energy capture from sunlight.
It is 100% code compliant and has structural validation for all solar states. This ensures that installations adhere to the highest safety standards, providing peace of mind for users and installers alike.
The K2 System CrossRail operates through a modular construction method, which accommodates various PV module types and orientations. This system allows for easy adjustments and installation, making it user-friendly for both technical and non-technical individuals.
The modular design allows users to customize the system according to their installation needs, making the process flexible and efficient. It can accommodate any system size and features height adjustment for optimal performance.
The roof attachments are designed for compatibility with all roof types, including shingle, tile, and standing seam. This feature expands the usability of the K2 System, making it suitable for diverse residential and commercial buildings.
Offering a warranty period of 25 years, the K2 System provides confidence in the longevity and reliability of the product. This assurance is crucial for professionals and homeowners seeking long-term solar solutions.
| Manufacturer | K2 Systems |
| Part Number | 4000705 |
| Rail Size | 166 inches |
| Material | High corrosion resistance stainless steel and aluminum |
| Module Orientation | Portrait and landscape |
| Flexibility | Modular construction, height adjustable |
| Certifications | UL 2703, ASCE 7-16, Class A Fire Rating |
| Structural Validity | IBC compliant, stamped engineering letters available |
| Warranty | 25 years |
| Roof Type Compatibility | Shingle, tile, standing seam, corrugated metal |
From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.
Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.
Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.
$150 Value - Free Offer (Limited Time Only!) No Strings Attached. Totally Free. Takes Less than 2 Minutes.