BMW 1 Series M140i / M135i F20 / F21 K-Brace Rear Strut Bar Interior Brace 2011–2019 K-Brace® For BMW M135i & M140i F20 & F21 (Rear Strut Brace) ???? PRODUCT OVERVIEW:The K-Brace® Rear Strut Brace for BMW M135i & M140i F20 & F21 is designed to improve chassis rigidity, reduce body flex, and enhance overall driving stability.
