The Service Course seatpost also is improved for easier tool access to the downward facing bolt for easy setup. Better fit means better performance. If your saddle is out of position, you ll waste energy with every pedal stroke. The secure, low-profile clamp allows the saddle to slide farther back along the rails, and with 0 mm and 20 mm setback options, it s possible for nearly any rider to achieve the perfect fit. The unique clamp design also features downward-facing bolt heads that allow micro-adjustment of the saddle even after it is mounted. For high strength, low weight, and efficient use of every gram, the shaft and head are not bonded but are 3D-forged from 6061 aluminum. The Service Course Seatpost is 350 mm in length.