– Super Alloy Spring (proprietary super light design)– Extreme Linear Ratio– Hard Epoxy Coating– Internal Diameter: Ø38.5 mm– The lightest steel springs on the market– Developed in our automotive racing programs– First dedicated to fine tuning with 25lbs increments– Adaptable for all type of dampers in the market– Life duration: over 500.000 cycles C65 Springs are for any EXT (or other brand with adapter) damper with 65mm or less stroke C75 Springs are for any EXT (or any other brand with adapter) damper with 65-75mm of stroke C90 Springs are for Arma MX or any 10.5x3.5" MTB damper (with adapters if not an EXT damper) Note: 650, 700, 750 and 800lbs/in springs come with machined collars to enable them to be fitted to the standard spring perches on EXT Storia and Arma dampers. These collars MUST be used when fitting these springs. This is why these springs are more expensive. On E-Storia, these collars are not necessary. Link to adapters to use these springs on other brands here
