Adjusting the original title to focus on the product keyword, while retaining relevant information: *Dual-Position Aluminum Seatpost by REDSHIFT**

The patented Redshift Dual-Position Seatpost for bicycles allows you to switch between two seatpost positions: road and triathlon positions while riding your bike. This innovative bike accessory is optimized for triathlon and long-distance riders. The Dual-Position bike seatpost enables you to transform the road bike you already own into a triathlon riding position for proper fit with aero bars, allowing you to switch between road and aero positions on the fly during your ride.

Proper positioning of your bike saddle is the key to riding comfortably, and this seatpost allows you to ride with a proper aero bike fit on a standard road bike, so you can ride faster and more comfortably. The seat post is designed to maintain the same pedal-to-saddle length in both positions, ensuring proper leg extension in the road and aero riding positions.

The steeper effective angle between the saddle and tube bar opens your hip angle and maintains a reasonable leg extension, which makes you ride comfortably and powerfully in the time trial position. Are you driving a long flat track with a headwind? Push the saddle forward and lie in the aerodynamic time trial position that beats a snip to the wind. Torturing yourself on a steep climb? Slide the saddle back and switch comfortably to the road bike position.

The mechanism is completely stable in both positions - a spring-loaded stop keeps it securely in place until you decide to change your position. The 2-position seat post - in combination with the Redshift Sports quick-release aerole handlebar grips (not included) - puts you in a truly integrated aerodynamic time trial position without compromising your normal road bike setup.

The seat post is constructed from an aviation grade 6061-T6 aluminium alloy. The tube has a diameter of 27.2 mm and a length of 350 mm. With clamps (not included), the seat post can be adapted to bikes with larger saddle tube diameter. The seat post is suitable for saddles with standard 7mm round saddle frame. The seat post weighs 400 g including all components.

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