For BMW 2 Series F22 F87 Coupe Genuine Kilen Rear Suspension Coil Springs (Pair). We apologise in advance for any inconvenience caused. The suspension spring is an important component within the total suspension system, and contributes significantly to a vehicle’s overall safety and performance. Kilen have over 150 years spring manufacturing experience, and today produce the world’s largest range of coils springs for the automotive aftermarket.