CrossRail System
K2 Flex Foot Kit, Mill w/EverSeal
Product number:
4000718
The K2 Flex Foot is a versatile roof attachment that is compatible with nearly all roof types and can be installed to the rafter or decking.
Drop N Lock RT - Flat, Kit
Product number:
4000234
Drop N Lock RT - Flat, Kit is designed specifically for flat tile roofs, providing a secure and reliable mounting solution. This kit includes a 4.5" post, optimized for flat tile applications, ensuring a perfect fit and superior stability.
Drop N Lock RT- S, Kit
Product number:
4000235
Drop N Lock RT - S, Kit is designed specifically for S tile roofs, providing a secure and reliable mounting solution. This kit includes a 6" post, optimized for S tile applications, ensuring a perfect fit and superior stability.
Drop N Lock RT - W, Kit
Product number:
4000236
Drop N Lock RT - W, Kit is designed specifically for W tile roofs, providing a secure and reliable mounting solution. This kit includes a 6" post, optimized for W tile applications, ensuring a perfect fit and superior stability.
K2 Drop N Lock Post 4.5", Kit
Product number:
4000237
K2 Drop N Lock Post 4.5", Kit is designed to use on flat tile roofs, comp shingle, or rolled asphalt flat roofs, providing a secure and reliable mounting solution. This kit includes a 4.5" post that gives plenty of room for the modules to breath. You can pair it with the 4" Chem Link E-Curb and fill it with M-1.
K2 Drop N Lock Post 6", Kit
Product number:
4000238
K2 Drop N Lock Post 6", Kit is designed to use on flat tile roofs, comp shingle, or rolled asphalt flat roofs, providing a secure and reliable mounting solution. This kit includes a 6" post that gives plenty of room for the modules to breath. Although it's waterproofed on it's own with the K2 EverSeal, you can also pair it with the 4" Chem Link E-Curb and fill it with M-1 for added protection.
Universal Standard Hook, 9" Base, Kit
Product number:
4000140-B
K2 Systems offers the USH, 9", Base Kit, w/K2 EverSeal. Pre-installed with EverSeal for a quick and easy application.
Universal Standard Hook, 9" Base, Kit
Product number:
4000140
K2 Systems offers the USH, 9", Base Kit, w/K2 EverSeal. Pre-installed with EverSeal for a quick and easy application.
Flat Tile Hook X, Kit
Product number:
4000141-B
K2 Systems offers the Flat Tile Hook X Kit, w/K2 EverSeal. Our EverSeal technology offers a quick and easy installation to save you install time.
USH +2, 5.5" Base Kit, w/K2 EverSeal, DC
Product number:
4000142-B-US
The USH +2, 5.5" Base Kit by K2 Systems is designed to meet U.S. Domestic Content Requirements in compliance with the IRA 2022, making it an ideal choice for U.S. solar installations seeking federal incentives. Equipped with pre-installed K2 EverSeal technology, this kit offers outstanding waterproofing and a streamlined installation process. With its robust 5.5-inch base and pre-applied K2 EverSeal, the USH +2 Base Kit provides a dependable, weather-resistant solution tailored for the unique demands of American rooftops.
Universal Standard Hook+2, 5.5" Base Kit
Product number:
4000142
K2 Systems offers the USH +2, 5.5" Base Kit, w/K2 EverSeal. The EverSeal is pre-installed and ready for installation.
Tile Hook 3S Wide Base w/Hardware
Product number:
4001294
The Tile Hook 3S is a two piece adjustbale hook. Its base has three levels of height adjustability with 5.5' of east/west adjustability. The top includes a spot to attach an L-Foot.
K2 Cross Clamp Set, Mill
Product number:
4000135
The Cross Clamp features a new and improved design allowing for easy one-handed installation with just one tool, offering both Mid and End Clamp functionality, compatible with module frames ranging from 30mm to 45mm, and maintaining a minimal inter-module gap of 0.5 inches.
K2 Cross Clamp Set, Dark
Product number:
4000145
The Cross Clamp features a new and improved design allowing for easy one-handed installation with just one tool, offering both Mid and End Clamp functionality, compatible with module frames ranging from 30mm to 45mm, and maintaining a minimal inter-module gap of 0.5 inches.
K2 Cross Clamp Set, Mill, DC
Product number:
4000135-US
The K2 Cross Clamp offers a versatile and efficient design for solar module installations, meeting U.S. Domestic Content Requirements under the IRA 2022 to help projects qualify for federal incentives. This newly improved clamp allows easy one-handed installation with just one tool, functioning as both a Mid and End Clamp. Compatible with module frames from 30mm to 45mm, it maintains a minimal inter-module gap of 0.5 inches, ensuring a sleek, low-profile finish while providing secure, reliable support across U.S. rooftops.
K2 Cross Clamp Set, Dark, DC
Product number:
4000145-US
The K2 Cross Clamp offers a versatile and efficient design for solar module installations, meeting U.S. Domestic Content Requirements under the IRA 2022 to help projects qualify for federal incentives. This newly improved clamp allows easy one-handed installation with just one tool, functioning as both a Mid and End Clamp. Compatible with module frames from 30mm to 45mm, it maintains a minimal inter-module gap of 0.5 inches, ensuring a sleek, low-profile finish while providing secure, reliable support across U.S. rooftops.
K2 Mid Clamp Set, Mill
Product number:
4000230
K2's updated Mid Clamp has the self-leveling base that was created from our innovative K2 End Clamp.
K2 End Clamp Set
Product number:
4000197
The K2 End Clamp is a self-leveling end clamp that is compatible with all K2 Systems.
Yeti Clamp 2.0, Set
Product number:
4000050-B
The Yeti Clamp 2.0 is K2 Systems' very own hidden end clamp, with enhanced aesthetics and simple installation.
CrossRail 44-X 172", Mill
Product number:
4000719
The CrossRail 44-X may be K2's smallest and lightest rail profile, but it is just as strong as the 48-X.
CrossRail 44-X Max 172", Mill, DC
Product number:
4000819-US
The CrossRail 44-X may be K2's smallest and lightest rail profile, but it doesn’t compromise on strength—matching the durability of the 48-X. Its enhanced profile design provides additional space for in-rail wire management, offering greater flexibility in installations. Proudly made in the USA, this product meets the requirements of the IRA 2022 Domestic Content standards, making it a reliable choice for projects that prioritize American manufacturing.
CrossRail 44-X Max 172", Dark
Product number:
4000820
The CrossRail 44-X may be K2's smallest and lightest rail profile, but it doesn’t compromise on strength—matching the durability of the 48-X. Its enhanced profile design provides additional space for in-rail wire management, offering greater flexibility in installations.
CrossRail 44-X Max 172", Mill
Product number:
4000819
The CrossRail 44-X may be K2's smallest and lightest rail profile, but it doesn’t compromise on strength—matching the durability of the 48-X. Its enhanced profile design provides additional space for in-rail wire management, offering greater flexibility in installations.
SPO CrossRail 44-X Max 86", Mill, DC
Product number:
4000816-US
The CrossRail 44-X may be K2's smallest and lightest rail profile, but it doesn’t compromise on strength—matching the durability of the 48-X. Its enhanced profile design provides additional space for in-rail wire management, offering greater flexibility in installations. Proudly made in the USA, this product meets the requirements of the IRA 2022 Domestic Content standards, making it a reliable choice for projects that prioritize American manufacturing.
CrossRail 44-X 172", Dark
Product number:
4000720
The CrossRail 44-X may be K2's smallest and lightest rail profile, but it is just as strong as the 48-X.
CrossRail 48-X 172", Dark, DC
Product number:
4000724-US
The CrossRail 48-X is K2 Systems' most popular rail profile, engineered for durability and strength across diverse rooftop solar installations. Fully compliant with U.S. Domestic Content Requirements under the IRA 2022, this rail is eligible for federal incentives, making it a reliable choice for American solar projects. The CrossRail 48-X provides a robust, secure foundation for mounting, ensuring long-lasting performance and ease of installation across U.S. rooftops.
CrossRail 48-X 172", Mill, DC
Product number:
4000723-US
The CrossRail 48-X is K2 Systems' most popular rail profile, engineered for durability and strength across diverse rooftop solar installations. Fully compliant with U.S. Domestic Content Requirements under the IRA 2022, this rail is eligible for federal incentives, making it a reliable choice for American solar projects. The CrossRail 48-X provides a robust, secure foundation for mounting, ensuring long-lasting performance and ease of installation across U.S. rooftops.
CrossRail 48-X 172", Mill
Product number:
4000723
The CrossRail 48-X is K2 Systems' most popular rail profile, engineered for durability and strength across diverse rooftop solar installations.
CrossRail 48-XL 172", Dark
Product number:
4000728
The CrossRail 48-XL by K2 Systems is an exceptionally strong rail profile, specifically engineered to withstand extreme weather conditions, providing unmatched stability and durability.
CrossRail 48-XL 172'', Dark, DC
Product number:
4000728-US
The CrossRail 48-XL by K2 Systems is an exceptionally strong rail profile, specifically engineered to withstand extreme weather conditions, providing unmatched stability and durability. Compliant with U.S. Domestic Content Requirements under the IRA 2022, it qualifies for federal incentives, making it ideal for American solar installations in demanding climates. The CrossRail 48-XL ensures a secure, resilient foundation, delivering robust support and peace of mind in challenging environments across U.S. rooftops.
CrossRail 48-XL 185", Mill
Product number:
4000729
The CrossRail 48-XL by K2 Systems is an exceptionally strong rail profile, specifically engineered to withstand extreme weather conditions, providing unmatched stability and durability.
CrossRail 48-XL 172", Mill, DC
Product number:
4000727-US
The CrossRail 48-XL by K2 Systems is an exceptionally strong rail profile, specifically engineered to withstand extreme weather conditions, providing unmatched stability and durability. Compliant with U.S. Domestic Content Requirements under the IRA 2022, it qualifies for federal incentives, making it ideal for American solar installations in demanding climates. The CrossRail 48-XL ensures a secure, resilient foundation, delivering robust support and peace of mind in challenging environments across U.S. rooftops.
CrossRail 48-XL, Dark
Product number:
4000705
CrossRail 48-XL is an very strong rail profile designed for areas with extreme weather conditions.
CrossRail 80, Mill
Product number:
4000708
The CrossRail 80 is K2's largest rail profile. It is predominately used for the Ground Mount System.
K2 Rail Runner Kit, Mill
Product number:
4000770
Effortlessly streamline your solar rail installation with the K2 Rail Runner Kit. Engineered for rapid and reliable mounting, this kit ensures a secure fit without the need for T-bolts. Key features include:Versatile Compatibility: Designed for use with CrossRail 44-X, 44-X MAX, and 48-X systems, seamlessly integrating with the K2 Multi Mount.Premium Build: Made from durable Aluminum Alloy 6061-T6 with heavy-duty stainless steel and plastic hardware, providing lasting durability and resilience.Enhanced Stability: Featuring a serrated flange bolt and nylon spring for a strong, positive engagement with the rail profile.Finish Options: Available in Mill or Dark to match your installation’s aesthetic needs.Built for installers who value speed and precision, the K2 Rail Runner Kit includes everything needed for a seamless setup, backed by a 25-year warranty for peace of mind.
EverFlash Flat Tile – R, Mill
Product number:
4000130
The EverFlash Tile Replacement Flashing is feature packed and is available in Flat, S and W tile profiles.
EverFlash S Tile – R, Mill
Product number:
4000131
The EverFlash Tile Replacement Flashing is feature packed and is available in Flat, S and W tile profiles.
EverFlash W Tile – R, Mill
Product number:
4000132
The EverFlash Tile Replacement Flashing is feature packed and is available in Flat, S and W tile profiles.
K2 Tile Hood Flashing, Mill
Product number:
4000008
The K2 Tile Hood is a deck flashing that gives extra waterproofing protection by completely covering the hook penetrations.
K2 Conduit Clamp CrossRail Kit
Product number:
4000279
This conduit clamp kit is made to be attached directly onto our rails. Kitted with a t-bolt set it create an easy and quick installation to lay down conduit.
K2 Edge, Corner
Product number:
4000461
The K2 Edge, Corner works with the K2 Edge to provide a clean look to the corner of your array.
K2 Edge, Module Clamp
Product number:
4000458
K2 Edge, Module Clamp is the bracket that holds the system in place.
K2 Edge, Connector
Product number:
4000460
The K2 Edge, Connector joins the K2 Edge, Dark Plastic in a seamless and easy way.
K2 Edge, 10 ft Dark Plastic
Product number:
4000459
The K2 Edge, 10 ft Dark Plastic provides a clean matte finish to your PV project.
Tool-less Rail Connector 44-X, Set
Product number:
4000051-T
Effortlessly enhance your solar mounting system with the Tool-less Rail Connector, 44-X. Engineered for simplicity and reliability, this innovative connector allows for quick and easy installation without the need for tools.
Rail Connector CR 44-X, Set, DC
Product number:
4000051-US
The K2 Rail Connector is a durable and efficient structural external connector designed to securely attach rails to solar racking systems. Engineered to meet the Domestic Content requirements under the Inflation Reduction Act (IRA), this product is the perfect choice for installers seeking compliance without compromising on quality.
Rail Connector CR 44-X, Set, Mill
Product number:
4000051
The K2 Rail Connector is a structural external connector that attaches to the rail with two T-Bolts and nuts.
CrossRail System
The CrossRail System allows for a fast and simple installation with K2’s preassembled universal components. It is a flexible system that can be installed on composition shingle, tile and standing seam roofs. The CrossRail is the base of many of our systems. With just two innovative components you can switch from the classic dual rail system to a Tilt Up or Shared Rail System.
CrossRail System
Areas of application
We offer traditional metal flashing as well as non-metal flashings that are compatible with all composition shingle roof types. Standard metal flashings require installing into the rafters, while our EverSeal options such as the Splice Foot and Mini Foot XL have the flexibility to be installed into the decking.
We offer a variety of tile hook options that are compatible with Flat, S and W-Tile roofs. Our Tile Hook 3S and Flat Tile Hook are more robust for extreme weather conditions. Our Flat Tile Hook X and Universal Hooks offer more flexibility and also are available with K2 EverSeal preassembled on the base.
You can attach the CrossRail System to a standing seam metal roof using either of our Standing Seam PowerClamps. They are available in Mini and Standard sizes. The mini has 1 set screw while the standard has 2.
CrossRail System
Technical data
| Rail Type | |
|---|---|
| CrossRail 44-X, Mill/Dark | |
| Material | 6000 Series Aluminum |
| W = width [mm] | 39 |
| H = height [mm] | 44 |
| Lengths [in] | 172", 185" |
| Applicable Roof Types | Composition shingle, tile, flat tile |
| CrossRail 48-X, Mill/Dark | |
| Material | 6000 Series Aluminum |
| W = width [mm] | 39 |
| H = height [mm] | 48 |
| Lengths [in] | 172", 185" |
| Applicable Roof Types | Composition shingle, tile, flat tile |
| CrossRail 48-XL, Mill/Dark | |
| Material | 6000 Series Aluminum |
| W = width [mm] | 39 |
| H = height [mm] | 48 |
| Lengths [in] | 172", 185" |
| Applicable Roof Types | Composition shingle, tile, flat tile |
| CrossRail 80, Mill/Dark | |
| Material | 6000 Series Aluminum |
| W = width [mm] | 39 |
| H = height [mm] | 172", 185" |
| Lengths [in] | 168", custom |
| Applicable Roof Types | Composition shingle, tile, flat tile |
CrossRail System
Downloads
Assembly Instructions
Data Sheet
Torque Flyer
CrossRail-ENG-7-05-HI
25-Year Warranty
CrossRail System
Videos
CrossRail System
K2 Base: Easy, fast and safe planning
Quick and easy planning in five steps of K2 mounting systems for pitched and flat roofs. Our free planning tool K2 Base has a dashboard for efficient project management. Google Maps integration and graphic drawing tools support you in planning and make it easier.