EPI Primary Clutch Spring (Drive) by Kimpex Sale $45.99 Inventory Loading... Black - $45.99 Black Title Chevron down icon 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Largest selection of springs to tune from. Designed from the highest quality material. All EPI springs manufactured using a 5% tolerance which is the lowest in the industry. ISO 9000 Certified. Fine tune your engagement and top RPM as you like.