Piston Spring (Red) - Ball Bearing Chambers | AUD 4355 | SU Specialists

Genuine SU piston spring — Red — for ball-bearing suction chambers. Spring weight: heavy (strongest). The piston spring controls the rate at which the piston rises in response to airflow. Spring selection affects mixture richness and throttle response — choose the correct colour for your application. Manufactured to original SU specification.

Part Number: AUD 4355