Genuine BMW Underbody Chassis Brace M140I M135I F20 F21 F22. Genuine BMW Underbody Chassis Brace M140 M135 and all F20, F21, F22 chassis vehicles. PRODUCT SPECIFICATION Crafted from automotive-grade high-quality steel Anti-rust coating Genuine BMW original part. COMPATIBILITY BMW 1 Series (F20/F21) M135i 2012+ BMW 1 Series (F20/F21) M140i 2015+ BMW 2 Series F22