BMW Diffuser F20 F21 M-Sport M140i Exhaust steering Individually road-tested by Bilstein for

Individually road-tested by Bilstein for precision

A mono block guide and the proven ST seal package help protect the internals from dirt and weather

Keeps other vehicle control modules and driving functions working as intended

F80 wing vents

BMW Diffuser F20 F21 M-Sport M140i Exhaust steering Individually road-tested by Bilstein forIt is recommended that the buyer has the item fitted professionally. Not satisfied with your purchase? We aim to make every transaction a 5* experience, however, if you do not feel confident about leaving a positive 5* rating please contact us. We will accept & refund only unused undamaged by the buyer items. Please contact us within 7 working days following delivery. Any return shipping fees are customers liability unless the item was faulty.