The Pro Tharsis XC 309X400mm Carbon Seat Post is light yet still capable of enduring the rigours of World Cup XC racing It allows for maximum adjustability thanks to its 1bold clamping system This post will put you in the perfect position to apply maximum power to the pedals It is compatible with Shimano Di2 battery integration The 20mm offset puts you in an aggressive riding position Key Features UD carbon construction 1bolt clamping system Compatible with Shimano Di2 battery integration Matte carbon finish Length 400mm Diameters 316mm Offset 0 199g weight

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