The Quintana Roo PRfive Ultegra Race Bike has one upgrade from the Ultegra PRfive: Reynolds Strike wheels. The difference the wheels make is very much one that deserves the “race” bike moniker. This bike comes out of the box set up for racing.
The Strike wheels are 62mm deep, 25mm wide carbon clinchers. The shape is fast, tipping more towards flatter races, for sure, but at only 1635g for the set, they’re still light enough for most rolling courses as well. Reynolds has been widening the rim and adjusting their Swirl Lip Generator to both improve the wheels ability to slice through a headwind and improve its handling in crosswinds. It’s also tubeless compatible. And if you want to take advantage of their warranty program, RAP, you can do so, provided you register the wheels within 30 days of purchase.
The rest of the build is a savvy one with an eye on value. Shimano bar-end shifters tend Ultegra 6800 eleven-speed derailleurs, but that’s the limit of Ultegra. The cassette is a Shimano 105 11-28 eleven-speed, paired up with a tri-specific Vision Trimax crank sporting 52/36 rings. Shimano’s 105 group also provides the direct mount brake. The brakes are great, but if you prefer another direct mount, or a more traditional center-mount, you can upgrade at a later time. Even the hydraulic-hosed Maguras will work. Wheels are the rock solid Shimano RS-11’s.
Where Quintana Roo really distinguishes their builds are with the tri’ friendly bars and saddle. Profile’s Ozero base bars and T4+ extensions are light, flexible, and smart. The ISM PS 1.0 saddle is the kind of bottom cushion many turn to after they buy their bike. Here, it’s standard equipment.
QR wants this bike to fit everyone. Thanks to the conventional 1 1/8” stem, and the sliding saddle clamp that provides you with an effective 77- to 83-degree seat angle, the super fit and flexible, and the stiff noob can find a position that is comfy and fast.
The frameset itself is super slippery in the wind, stiff for power, and light for climbing and accelerations. Most simply, the Five is the PRsix with less expensive carbon, boasting a conventional fork and stem. But that isn’t giving it enough credit. This last change makes the PR friendlier for most riders-easier to fit, easier to travel with.
The five has QR’s Shift+ downtube, which works for you in three ways. First is that the shape is slightly offset to move more air to the aerodynamically cleaner side of the bike, the left side. Second is the consistent distance between the front wheel and the downtube. Smaller bikes are often faster in straight headwinds because the trailing edge of the front wheel is closer to the leading edge of he downtube. Bigger bikes are often faster in crosswinds because that greater distance provides more of a sail effect. Here, QR keeps that distance fairly consistent, so both the smaller and larger sizes are excellent in both zero- and high-yaw scenarios. Third is that the downtube was designed with he assumption you’d be putting bottles there. The aero “cost” of the bottles is lower than the competition.
The aerodynamics continue with the leading edge absent left chainstay all the way to the flexibility of choosing between horizontal and vertical dropouts. Here, too, there are extra benefits. The tall left stay helps with drivetrain rigidity. The dropouts allow you to choose between easier wheel changes and perfecting rear wheel aerodynamics based on tire size. All told, the PRfive is one of the lightest framesets in its class, less than 2100g, which is more than 400g lighter than some of the competition.
If you want your new Quintana Roo PRfive to come with race wheels and mechanical shifting, the Ultegra Race Bike is the choice for you.
Ultegra Di2 Electronic Fork Carbon Aero Headset Cane Creek IS41 Stem Profile 1/Seventeen Handlebars Profile Design Wing 10A with 35A Extensions Seatpost QR Aero Carbon Saddle ISM PS 1.0 Shifters Ultegra Di2 Front Derailleur Ultegra Di2 Rear Derailleur Ultegra Di2 Brakes Ultegra Crankset Vision Trimax 52-36 Cassette Ultegra 11-28 Chain Ultegra Bottom Bracket FSA PF30 Tires Continental Kevlar Wheelset Select Wheels Above Top Tube Storage QR Top Tube Storage System
QBox QR QBox
Ultegra Mechanical Fork Carbon Aero Headset Cane Creek IS41 Stem Profile 1/Seventeen Handlebars Profile Design Wing 10A with 35A Extensions Seatpost QR Aero Carbon Saddle ISM PS 1.0 Shifters Ultegra Front Derailleur Ultegra Rear Derailleur Ultegra Brakes Ultegra Crankset Vision Trimax 52-36 Cassette Ultegra 11-28 Chain Ultegra Bottom Bracket FSA PF30 Tires Continental Kevlar Wheelset Select Wheels Above Top Tube Storage QR Top Tube Storage System QBox QR QBox Bar, Stem & Crank Specs Stem Length Size 48-50 — 70mm Size 52-54 — 90mm Size 56-58.5 — 110mm Crank Length Size 48-52 — 165mm Size 54-56 — 170mm Size 58.5 — 172.5mm Bar Width Size 48-52 — 42cm Size 54-56 — 42cm Size 58.5 — 42cm