Overview SpecsFit, security, adjustability and lightweight are what discerning riders look for in a seatpost. Thats precisely why Zipp has expanded its popular SLSpeed carbon seatpost 295, 264 to be available in a 0 mm setback option, as well as the previously offered 20 mm setback position. The 0 mm option provides riders with more options to optimize fit and efficiency on the bike. With an extended range of adjustment, you can put your saddle right where you want it, so that it puts you in a position to get the most power out of every pedal stroke. The SLSpeed is the choice of Tom Boonen and other top pros on the Omega Pharma Quick Step Cycling Team and Team Saxo Bank Tinkoff Bank. In fact, Big Tom believes in the fit and durability of this carbon post so much he even rode it in his historic wins at the 2012 Tour of Flanders and Paris Roubaix. Based on the design of Zipps Service Course seatposts, the SLSpeed has the same features as its alloy siblings, with the lightweight and stiffness advantages of carbon fiber. The SLSpeed seatpost comes in two diameters 27.2mm and 31.6mm, weighing just 175 g for the new 0 mm setback and 185 g for the 20 mm setback seatpost. Length is 330mm. All hardware is titanium, and two nut retainer caps are included in red and white.