Description: The BMW base support system with antitheft locks complies with the most stringent safety requirements. Support arms are made of high-strength aluminium tubing. The system is easy to fit- with no tools required. Maximum roof load up to 200 pounds. BMWs modular roof rack system with coded bolts offers security and practicality. Made of high-tensile aluminum tubing- it is remarkably lightweight- strong and corrosion-resistant. Easy to install and is compatible with a wide range of aerodynamic attachments.