QR Stealth PRsix
The PR Series is Quintana Roo's premier line of high performance triathlon bikes. From the professional to the elite athlete to those with a goal to finish, the PR series is the best choice to help athletes achieve their personal record (PR).
- Fork: QR Integrated SHIFT+
- Headset: FSA Orbit IS-2
- Stem: QR 12-position
- Handlebar: Profile Design Prosvet Carbon
- Extensions: Profile Design T4+ Carbon
- Seat Post: QR Aero Carbon
- Saddle: ISM PN 2.1
- Shifters: Shimano Ultegra
- Front Derailleur: Shimano Ultegra
- Rear Derailleur: Shimano Ultegra
- Brakes: Shimano Ultegra
- Crankset: FSA SL-K 52-36
- Cassette: Shimano Ultegra 12-25
- Chain: Shimano Ultegra
- Bottom Bracket: FSA PF30
- Tires: Conti Grand Sport Race
Wheelset: Reynolds Strike SLG
- QBox included
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: (PRsix & PRfive only)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.
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