Piston Spring (Red & Green) | AUC 4826

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Genuine SU piston spring — Red & Green. Spring weight: heavy/medium combination. The piston spring controls the rate at which the piston rises in response to airflow. Spring select ion affects mixture richness and throttle response — choose the correct colour for your application. Manufactured by Burlen to original SU specification. Part Number: AUC 4826 Show more