This base is used as a support structure for the Prime, Spyd and Artax saddles and can also be used with the Aleena pad.

In order to make the saddles with a plastic base non-deformable over time, Repente has developed the LCF (Long Carbon Fiber) technology: the PA12 technopolymer is reinforced not with common carbon fragments, but with long carbon fibers which, thanks to a particular injection process, create a weave that considerably increases the mechanical properties of the structure. As demonstrated by the tests carried out, this technology minimizes the risk of deformation or breakage of the shell.

The rail is built entirely of carbon. The differential cross-sections achieve the right mix of rigidity and flexibility throughout the support plane..