Ultra light weight Note this is carbon rail. for weight weenies this will shave another 100g off your bike.
RFS: clearing store. bought as spare saddle but am selling the matching bike away
The R3’s carbon braided rail reduces weight and increases saddle stiffness.
Shell: Fiberglass Thermoplastic Composite with Wing Flex™ for freedom of thigh movement
Rail: Carbon Braided 7x9mm