The Large-Scale Structure of the Universe (Princeton Series in Physics Book 12)
- PATENTED DUAL-POSITION SEATPOSTS – The patented Redshift Dual-Position Seatpost for bicycles allows you to switch between two seatpost positions: road and triathlon positions while riding your bike. Innovative bike accessories optimized for triathlon and long distance riders..
- SWITCH FROM ROAD TO AERO POSITION – The Dual-Position bike seatpost allows you to switch between road and aero positions on the fly during your ride. Transform the road bike you already own into a triathlon riding position for proper fit with aero bars..
- RIDE WITH EASE MORE COMFORTABLY – The key to riding comfortably is proper positioning of your bike saddle. This bike seatpost allows you to ride with a proper aero bike fit on a standard road bike, so you can ride faster and more comfortably..
- ENSURES PROPER LEG EXTENSION – This seatpost for bikes is designed to maintain the same pedal-to-saddle length in both positions, ensuring proper leg extension in the road and aero riding positions..
- COMPATIBLE WITH – The seat post is 27.2 mm in diameter by 350 mm in length. Shims (sold separately) can be used to adapt the seatpost to bikes with larger seatpost diameters. The bike seat post accepts saddles with standard round 7 mm saddle rails..