The Hollowgram Save Carbon seatpost has been proven in the worlds most challenging bike races. Light, comfortable and incredibly functional. Features Ultralight carbon. Subtle compliance = comfort. Di2 internal battery compatible. Friction flange (gopro style) mount for accessories. Specifications: Material: Carbon. Diameter: 27.2mm. Length: 350 or 400mm. Offset: 15mm. Rail Clamp: Round and Oval. Weight: 248g (400mm).
Best Price: £67.50 from Merlin Cycles