EXT MTB C Series Superlight V2 Spring

The new Superlight V2 Springs are developed using exotic materials mainly used in motorsports applications.
This material features a very high tensile strength and modulus that coupled with a very dedicate design and specific production processes allows the new generation of Superlight springs to weigh up to 30% less compared to the previous Superlight and other “normal” steel springs (weigh reduction percentage depends on spring stiffness and travel values).

New features are:

• The feature of higher % of vanadium results in a very high dynamic possible stress
• Long life span (automotive standards of over 500.000 cycles)
• Reduction of weight compared to the same spring made from “normal” spring steel (up to 30% of reduction, depending on spring characteristics)

EXT Superlight V2 Springs are carefully calculated to the minimum length for the stroke required, this means that your spring will totally cover the shock stroke, but will also have a lighter weight. EXT Springs are developed for a long time use, thanks to improved mechanical characteristics and its material directly derived from motorsport. We offer a rate increase by 25lb to fine tune your bike.

EXT Superlight V2 Springs do not need any preload (maximum 2mm preload) allowing you the best coil shock feeling. The use of springs with K over 600 require dedicated spring hardware/adapter, ask your local EXT dealer for more information.

– 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 spirings are more expensive. On E-Storia, these collars are not necessary.