Looking for every advantage you can get on your way to the podium? The PRsix is wind-tunnel designed plus real-world tested and approved by our team of Quintana Roo triathletes.
The combination of QR’s SHIFT+ technology, boat-tail airfoils, and leading-edge absent chainstay gives you superior aero advantages over the competition. PRsix features a wide range of position adjustment to find the perfect balance of aero and comfort with our proprietary integrated stem/fork design and Perfect Position seatpost.
With the precision stopping power of disc brakes you’ll stay in aero position longer knowing you have powerful brakes you can trust every time in any condition.
For use in a stationary trainer, a specific thru-axle will need to be ordered. The rear thru-axle is an E-thru standard M12x1.5.
- SHIFT+ technology
- 40T carbon-fiber frameset
- Disc brake technology
- Perfect Fit 2.0 stem
- QR aero storage containers
- Leading edge absent chainstay
- Simple wrenching and maintenance
- QR Perfect Position seatpost
SHIFT+ Technology Frame: QR’s unique Shift + aero design was first introduced in the CD0.1 and further refined in our PR series. Shift + offsets the Static Aero Downtube towards the drive side of the bike thus redirecting the concentrated airflow away from the ’dirty’ (drive side) to the ’clean’ side (non-drive side) of the bike. This minimizes drag and makes the drive train virtually invisible to the wind. The result is a bike that is more stable and more aerodynamic across a wider range of yaw angles. Athletes find that Shift + helps stabilize the bike in cross winds which saves them energy on the bike to use on the run.
Also in the SHIFT+ Frame:
- Integrated aero fork system mated to QR’s simple 12-position stem
- Multi system brake mount allows compatibility with most brakes
- Easy Assembly: 2 allen wrench sizes
- 6 position seatpost design
Boat Tail Airfoil: Used in ballistics technology and the automobile industry, Boat Tail Airfoils are more stable and more aerodynamic than Kamm Tail airfoils while still maintaining effectiveness over a wider range of yaw angles than traditional airfoil shapes. The boat tail shape reduces swirling air pockets off the back of each aero tube thus reducing drag and stabilizing the bike.
Static Downtube Orientation: Wind tunnel testing has shown that dropping the downtube as close as possible to the trailing edge of the front wheel improves aerodynamics. With this in mind, we’ve specifically calculated the downtube drop ratio for each size of the PRsix to make sure that every frame falls within the tightest standard. In other words, every size of the PRsix is as aero as we could possibly make it.
Leading Edge Absent Chainstay: Dramatically increased size and aero profile of the non-drive chainstay to minimize frame flex and maximizes power output while making the bike more aero and stable. This gives athletes the benefit of a sail effect in cross winds.
Aerodynamic Storage Systems: QR’s size specific QBox and Top Tube Storage systems are designed to further enhance the Boat Tail Airfoil increasing aerodynamics and stability while providing a quick and convenient location for storage.