Epi SDPS-1 Primary Drive Clutch Spring - Blue

2.9in. load - 240 lbs.
1.6in. load - 390 lbs..

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. Designed for extended life in demanding applications. 40% lighter. Resist fading due to high heat conditions. Highest quality, most durable material available today for clutch springs. Fine tune your engagement and rope RPM as you like.