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Your cart is empty.The patent pending Redshift Sports 2-position seat post allows you to switch your saddle between a normal road bike position and a time trial position as set up on a triathlon bike while driving. The steeper effective angle between 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 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 seat post is designed to maintain the same distance between saddle and pedal in both positions, ensuring adequate leg extension in the road bike and time trial position. Because some riders prefer more forward tilt of the saddle while riding in the aerodynamic time trial position, the seat post also has an additional adjustment that tilts the saddle forward up to five degrees when you switch from the road bike to the time trial 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.
TCr
Reviewed in the United States on March 2, 2025
Got this for my bike and it makes a huge difference in riding comfort. You can adjust the spring on it, but you have to remove the whole stem to do it. I tried a Thudbuster, but this one was definitely a lot better at cushioning my butt than the Thudbuster. Don't know why I didn't get one 5 years ago.
Karl D.
Reviewed in the United States on March 20, 2024
Cannot comment on reliability and durability as I just got it. Noted a big improvement in my comfort with aerobars with the ability to bring seat forward and upward. No issue getting the seat to go backwards from forward position. However, I have to stop the bike and move seat from back to forward position. maybe in time I will develop a technique to move seat forward without having to stop bike. If you have aerobars, this seatpost should be considered, despite the high price.
Spasssbremse
Reviewed in Germany on June 2, 2023
Ich habe mir diese Stütze jetzt für einen Ironman 70.3 gekauft.Bislang bin ich immer mit Aero-Aufsatz, aber normaler Sattelstütze gefahren.Ich bin gestern dann das erste Mal mit der Redshift Stütze 70 km geradelt und anschließend 15 km gelaufen.In der vorderen Position merkt man einen deutlichen Unterschied: Man kommt viel weiter nach vorne in den Aero-Aufsatz. Das Fahrgefühl wird etwas kippeliger, aber man merkt, dass man ökomischer auf dem Rad unterwegs ist. Im Prinzip sitzt man wie auf einem Triathlon-Rad, da der Winkel des Sattelrohrs quasi ähnlich ist (wird von ca. 73 Grad auf 78 Grad erhöht). Beim Wechsel zum Laufen hatte ich das Gefühl, dass meine Beine nicht so ermüdet waren wie in der normalen Position.Man kann während der Fahr problemlos zwischen den beiden Positionen wechseln: Nach vorne, indem man den Sattel mit der Hand nach vorne zieht und nach hinten, indem man den Sattel mit den Oberschenkeln nach hinten drückt.Der Preis und das Gewicht sind hoch, aber es gibt keine vergleichbare Stütze, mit der man die Sitzposition so schnell und problemlos wechseln kann.
Customer
Reviewed in the United Kingdom on January 7, 2021
This absolutely does what it says. Very comfortable when your down in the aero position. I highly recommend
BenF
Reviewed in the United States on January 23, 2021
Very useful and affordable! Also its very clear! Good buy!
Fraser Pressdee
Reviewed in the United Kingdom on March 28, 2019
Quality seat post. Comfortable position in both aero and regular ride positions. Competed ultra distances with this seat post which has helped in maintaining comfort.
Michael M.
Reviewed in Germany on March 15, 2019
Nutze die Stütze am Endurance Bike mit Lenkeraufsatz. Die vordere Sitzposition passt sehr gut beim Fahren auf den Lenkeraufsätzen, die hintere ist die gleiche wie mit meiner alten Sattelstütze (20 mm setback). Die Stütze ist gut verarbeitet und spielfrei, da klappert auch nichts. Umstellen während der Fahrt ist problemlos möglich.Einziger Nachteil ist das hohe Gewicht mit 400 Gramm.
Antoine
Reviewed in France on November 11, 2019
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TwinkleToes
Reviewed in the United States on September 15, 2018
I wasn’t quite convinced to the quality and effectiveness of this production till I installed it and tried on. First of all , this device never shifts accidentally between 2 positions; however , when you are ready to switch , you can do it easily and on the fly. I am really taken aback how easily I can move between 2 positions without straining, wiggling and etc . Secondly , it servers it’s purpose well. As, I am adjusting my road bike to use it for my first 70.3 distance triathlon, this seat post postions my body in comfortable aero position. When I get off the bike, I feel like my legs are less fatigue and I can transition to running easilier. I now feel more optimistic about my first 70.3.Redshift is a great option for people that are either on budget or don’t want to own seprate road and tri bike.
Customer
Reviewed in the United States on December 29, 2018
Purchased new but used product came. Very disappointing.
Katie LeFlore
Reviewed in the United States on September 21, 2017
PROs: Excellent design, works as described, easy to install and use, great adjustability for seat angle, very well madeCon: not light
C&T D family
Reviewed in the United States on March 3, 2017
This is an AWESOME seat post! I took it with me to get installed during my bike fit and the man who did my fit was very impressed and excited to put it on my bike. I have since ridden it indoors on my Kickr trainer and practiced moving it forward and back. I do have to grab the front of it and yank to get it to move forward but moving back is a breeze. However, I like the fact that it's decently difficult to move front and back so then you don't accidentally move it mid-ride. All in all, I'm EXTREMELY impressed, this is very well made.
Mike
Reviewed in the United States on September 9, 2016
First off, I spend about 50-60% of my time in the Aero position. The problem with that is, if you have a good Aero position on your bike, you will have a terrible upright posture while riding on the hoods. There's really no happy medium. This seat post is the answer! I upgraded to a split saddle too because a typical road bike saddle will not be comfortable with this seat post; especially in th Aero position. Needless to say, I love it. I can switch positions by pinching my thighs together and pulling up. On the fly I go from a road position to an aero position! Really worth the investment.
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