A torsion spring for the outer side of a Citroen 2CV is a key component of the vehicle's suspension system. It is designed to absorb and cushion shocks and vibrations encountered while driving. This specific part helps maintain stability, ensures a comfortable ride, and contributes to the vehicle's longevity. The torsion spring is made from high-quality steel, providing resilience and flexibility, engineered to handle various road conditions. It is essential for preserving the driving performance and safety of the 2CV.