Tipping the scales under 230 grams, the 25mm offset, 400mm long Truvativ Noir T40 Carbon Seatpost is designed for cross country racing. To achieve the perfect balance of weight and strength, filament wound tubes and unidirectional carbon are topped off with titanium hardware. Reinforced in all the right places, the Noir T40's unidirectional butting ensures the durability off road racing demands. For ease of saddle adjustment, a two bolt head is used to fine tune angle along while fore and aft position. The TruVativ Noir T40 25mm Offset Carbon Seatpost has a Carbon with Tungsten Grey finish and comes in three diameters 27. 2mm, 30. 9mm, and 31. 6mm.