Y1Rs

The Colnago Y1Rs is a dedicated aerodynamic race bike built specifically for the modern WorldTour peloton. Departing entirely from traditional double-diamond frame design, it features a radical silhouette defined by a cantilevered seatpost, a double-Y seat cluster, and a bayonet fork. This platform is engineered to maximize aerodynamic efficiency under the UCI's updated design rules, prioritizing sustained speed on flat and rolling terrain. It is an uncompromising machine aimed squarely at professional racers and highly competitive amateurs who value aerodynamic gains above all else. The Y1Rs utilizes modern standards, including a threaded bottom bracket, a universal derailleur hanger, and clearance for modern high-volume road tires, but its highly integrated proprietary cockpit and unconventional frame structure make it a specialized tool rather than an everyday workhorse.

Build

Size

Stack	565mm
Reach	395mm
Headtube length	150.5mm

Fit and geometry

The Y1Rs geometry marks a shift toward sharper, more aggressive handling compared to Colnago’s traditional stage-racing models. Across the four-size run, the frame utilizes a steeper head tube angle and a shorter front center, resulting in a tighter wheelbase that quickens steering response. This setup demands an attentive rider, particularly on technical descents where the bike reacts instantly to steering input.

Fit is heavily dictated by the proprietary CC.Y1 integrated cockpit. The gull-wing bar design lacks a traditional central crossbar, which forces riders to spend the majority of their time on the hoods or in the drops. The wide central junction of the bar also limits hand positions on the tops and, for some riders, can occasionally brush against the thighs while pedaling out of the saddle. At the rear, the cantilevered seatpost design means that vertical saddle height adjustments have a more pronounced effect on fore-aft saddle position than a traditional seat tube angle would dictate, requiring careful attention during initial setup.

Builds

The Y1Rs is offered in three ultra-premium builds, featuring top-tier electronic groupsets from Shimano, SRAM, and Campagnolo. The Shimano Dura-Ace Di2 and Campagnolo Super Record WRL models represent the core offerings, while the SRAM Red eTAP AXS build includes a CeramicSpeed bottom bracket. Wheel specifications vary significantly depending on the exact package, ranging from Vision 45 carbon wheels to premium ENVE SES 4.5 or Campagnolo Bora Ultra WTO 45 options.

Value is a major point of contention for the Y1Rs. The pricing sits at the absolute ceiling of the road market, yet the component specifications occasionally omit features standard on less expensive superbikes. For instance, the Dura-Ace build does not include a power meter, and the stock out-front computer mount has been criticized for struggling to support heavier head units. Furthermore, the highly integrated design complicates basic maintenance. The headset assembly and internal routing require specialized care, and the proprietary seatpost must be permanently cut to length during assembly. This makes the Y1Rs a demanding bike to own and service for anyone without access to a dedicated mechanic.

Sram Red eTAP AXS

$16,250

Campagnolo Super Record WRL

$17,100

Shimano Dura Ace Di2 Disc 12s

$17,100

Reviews

Reviewers consistently praise the Colnago Y1Rs for its outright speed on flat and rolling roads, backed by wind tunnel data showing exceptional aerodynamic efficiency. However, the ride quality and handling draw mixed reactions. While the rear triangle delivers efficient power transfer, multiple testers noted a distinct imbalance between the front and rear of the bike. One reviewer experienced an "unnerving proto-speed wobble" (Cycling News) under hard braking, attributing it to flex in the bayonet fork under high torsional loads. Another tester characterized the Y1Rs as a "breakaway bike" (Velo) rather than a pure sprinter's machine, noting intentional flex engineered into the cockpit and seatpost to aid long-distance efforts.

Despite its aggressive aerodynamic profile, the frame manages road chatter surprisingly well. One rider found that it "absorbs them really good" (YouTube) over rough pavement, making it suitable for long days in the saddle. Handling is generally described as highly responsive, with a "darting agility" (Cycling News) that makes it eager to change lines. Yet, that same quick steering, combined with the unique front-end flex, left some riders hesitant to push the bike to its limits on technical, blind descents.