Fit And PerformanceSince the introduction of our line of Service Course SL components we’ve had amazing success with our pro level athletes in all disciplines. While the successes have been proving, we have also drawn from their feedback. We not only learned how and why athletes make their equipment choices, but how our manufacturing methods and materials affect product performance. With new knowledge as well as new engineering, we are proud to introduce our completely redesigned Service Course SL seatpost with a carbon tube and aluminium head for better shock absorption and weight savings.Things To RememberNew lightweight clamping system,Changing the tube material to carbon, and adding length and sizes,.SpecificationsMaterial (SP/ST):  Unidirectional Carbon/AL-7075 head,Post diameter:  25.4mm, 27.2mm, 31.6mm,Post length:  400mm,Colour (SP):  Matte with stealth decals, Matte with white decals,Hardware:  Steel,Clamp Material:  Al-7075,Offset/Setback:  0mm, 20mm,.