Cervelo R3 Ultegra Disc Bicycle
Competition disc brake road bikes are springing up everywhere, and Cervelo jumps into the breakaway with the R3 Ultegra Disc. Guess what just moved to the top of your test ride list! Although we cannot sell Cervelo bikes online, you can come into our Boulder, CO showroom for fit and sales assistance from our expert staff.
While Cervelo has often been a driving innovator in cycling, when it came to road race bikes with disc brakes the Canadian company wanted to make sure the use of disc brakes were on track to be approved by the UCI road racing. In Cervelo's words: "then we needed time to test, test and test again to ensure the optimal balance in aerodynamics, weight, stiffness and all the other factors that separate Cervelo from the competition". It all make sense, but even as professional cycling struggles to integrate disc brakes for racing, it is clear that rider demand is pushing for competition-level bikes with disc brakes. And that makes sense on many levels. A low percentage of cyclists who buy pro-level bikes actually race. These are serious enthusiasts, with budgets to match. So it seems a little strange that Cervelo, who has certainly sold thousands of the impressive R-Series bikes to non-racers, would hold back. In the end, it worked out as the R3 Disc is the performance equal of it's standard counterpart, and Cervelo just didn't slap disc mounts on an R3 and call it good. The frame and fork design has been built to manage and counter hub-centered braking forces, as well as allowing the engineers to re-think the seatstays, among other aspects. Offered here as a complete R3 Ultegra 6800 Disc Bicycle, the design will enthrall the generation of road riders who praise and love the R3, but don't race in packs, and simply want the best all weather braking and bike control they can possibly get.
The R3 has been ridden to victories in events as diverse as the Tour de France and Paris-Roubaix, so it's pedigree, performance, and versatility can't be questioned. Adding a disc brake version only enhances the capabilities. So let's start there. Part of the frame development had to include a carbon 12/142mm rear thru-axle design, which adds substantial stiffness to the one-piece, wider back end. The lack of a seatstay bridge (no rim brake mount required) and UCI compliant (1cm thick) seatstays means the R3 Disc stays compliant, and weight gains from the adaptation to disc is somewhat mitigated. Cervelo chose the flat mount disc brake standard for the frame and fork, and is fully compatible with 140mm rotors, as well as 160mm with adapters. The fork itself is a tapered unit, at 1 ⅛ to 1 ⅜ unit with a 12/100mm thru-axle dropout system. The fork features an internal routing for the brake housing and plenty of stiffness to counter deflection from the hub-based disc rotors. Compliance means a smooth ride, even on the rough stuff, but the fork never feels flexy. At just 50 grams more than the standard R3 fork, this is feat of engineering unto itself.
The fork rides into the matched tapered headtube that, along with the main frame tubes, ensures exceptional torsional stiffness under any load. The always evolving square-oval, or Squoval, tubeset offers shapes that master torsion and transfer power, while laid-up in such a way that comfort is not sacrificed. Cervelo has demonstrated that Squoval is more aerodynamic than any round tubeset, and adds benefit on the road. The added width gained in the rear triangle, allowed the engineers to increase the size and stiffness of the already oversized bottom bracket junction by 20%, which is amazing because the standard R3 BBRight shell is highly regarded for it's stiffness and power transfer. Cervelo adds their integrated reduced friction bottom bracket guide, and future proof internal routing and interchangeable stop system for hydraulic, electronic or mechanical systems.
As a whole, the R3 Disc frameset is a completely new frame, built with the R-Series concept, but specifically for disc brake use. The frame itself comes in under 1000 grams, just slightly more per size than the standard road version, yet designed to both manage, and take advantage, of the benefits of disc brakes. This complete R3 Ultegra Disc Bicycle was spec'ed to fully exploit the frame, with hydraulic disc braking that shines in any weather situation. Due to the BBright bottom bracket system, Cervelo uses the Rotor PF-30 bottom bracket bearings and an FSA SL-K BBright carbon arm crankset. Given the road race nature of the frame, the 110 bcd compact spider carries a 52-36 chainring combination
Shimano's ST-R685 mechanical shifter/hydraulic disc brake STI levers were developed to be shared between Dura-Ace and Ultegra 11-speed groups. An 11-25 cassette delivers a tight range of standout Ultegra shifting, with the 6800 front and rear derailleurs driving the action of the HG700 chain. Hydraulic calipers are the BR-R805 flat mount versions, and the premium RT99 IceTech Freeza disc brake rotors come as 140mm front and rear. These brakes deliver exceptional stopping power through the 12mm thru-axle HED Ardennes Plus GP Center Lock Disc wheelset. Rear wheel spacing is 135mm at the locknut ends, spaced to 142 with the thru-axle. The 25mm (21mm internal) Plus rims are Tubeless Ready compatible, and carry the stock Continental Grand Sport Race 700x25mm tires effortlessly.
FSA provides the front of the cockpit, with the alloy Energy Compact bar and SL-K stem. The Fizik Antares VS Saddle is mounted to an FSA SL-K carbon seatpost. Geometry and components are specific to frame size, which runs close to standard for most cyclists.
While pro racers may be conservative regarding equipment changes, many serious enthusiasts have embraced disc brake use. The overall performance, in all conditions, of the R3 Ultegra Disc Bicycle will be appreciated and desired by many, especially those who have fallen in love with R-Series bikes over the years. Engineered to inspire, and challenge you to be a more complete rider, the R3 Disc may have missed the line-up at the start, but has reeled the pack in and made it's move off the front. Please call our expert staff at (800)627-6664 with any questions.
- Disc brake road race complete bike built for performance, value, in R3 tradition
- Road race geometry favors responsive, assertive handling and acceleration
- Frame and fork designed specifically for disc brakes, thru-axles
- Bottom bracket and chainstays larger, 20% stiffer than standard R3
- One-piece rear triangle, slender 1cm thick R3 seatstays, no rim brake bridge
- Flat-mount standard disc brakes, thru-axles enhance safety, alignment, performance
- Squoval tubeset design with tapered carbon, disc specific fork 1⅛ to 1⅜
- Easy tire clearance to 25mm, perhaps larger depending on actual tire specifications
- Future-proof internal cable routing and stop set keeps things clean, working properly
- 12mm thru-axles front and rear: 12/142mm rear, 12/100mm front
- Ultegra 6800 11-spd with R685 hydraulic STI levers, FSA SL-K BBright crank, PF30 BB
- 52-36 rings, 11-25 cassette, braze-on front derailleur, SS rear derailleur, HG700 chain
- HED Ardennes Plus GP Disc wheelset, Tubeless Ready, 24/24h, Center Lock disc
- Continental Grand Sport Race 700x25mm tires, with tubes
- Shimano RT99 IceTech Freeza Center Lock rotors, 140mm Front/Rear
- FSA SL-K carbon post, SL-K stem, Energy Compact bar, IS-2 headset, Fizik Antares VS saddle, Cervelo bar wrap
- Available in 48, 51, 54, 56, 58, 61cm sizes
- Color: Black