The Bilstein B6 front strut insert for 1977 BMW 320i is a 30mm monotube damper that upgrades OE handling while retaining the factory spring. B6 Performance dampers feature application-specific valve tuning and gas-pressure technology to improve grip, lane stability and safety. Each unit is tested to meet or exceed OE standards for consistent, tuned ride control without mandatory spring replacement.
Bilstein B6 1977 BMW 320i Base Front 30mm Monotube Strut Insert