An In-Depth Look at the 2021 Vitus ZX-1 EVO: An Aero Bike that Redefined Value

In the competitive world of high-performance road cycling, the 2021 Vitus ZX-1 EVO made a significant splash, not by being the lightest or most expensive bike on the market, but by offering a level of aerodynamic performance and componentry that punched well above its price point. Relaunched from the ground up, this bike was an evolution of the previous ZX-1, completely redesigned to deliver a “fast, feels fast, and looks fast” experience for the rider.

The Frameset: A Masterclass in Aerodynamics

The heart of the 2021 ZX-1 EVO is its all-new carbon monocoque frameset. Vitus’s design team, in collaboration with aerodynamics specialists, created a bike that featured deeper, more aggressive tube profiles compared to its predecessor. This overhaul resulted in a frame that was claimed to be up to 45% more aerodynamically efficient.

A key feature of the new frame was its full internal cable routing, which ran through the headset using the FSA ACR system. This created an incredibly clean front end, eliminating any cables exposed to the wind. The integrated seat clamp also contributed to the bike’s sleek aesthetic and aero profile.

Beyond the aero gains, the frame was engineered for stiffness. Its one-piece construction was designed to maximize power transfer, with a particularly stiff bottom bracket and front end that ensured responsive acceleration and precise steering. While this led to a slightly harsh ride on rougher roads, it was a compromise that many riders were willing to make for the bike’s race-focused performance.

The frameset’s geometry was also updated to a “Race-Fit,” which positioned the rider in a naturally aerodynamic posture. Vitus also implemented a “dual fork design” with size-specific geometry, adjusting the fork rake on smaller sizes to maintain consistent handling characteristics across the size range. The frame and fork were UCI-approved and featured flat-mount disc brakes and 12mm thru-axles.

Componentry and Build Options

Vitus offered the ZX-1 EVO in a range of builds to suit different budgets and rider preferences, all of which were praised for their incredible value.
The top-tier models, like the ZX-1 EVO CRX, came equipped with the electronic SRAM RED eTap AXS or Shimano Ultegra Di2 groupsets. Lower-priced versions, such as the ZX-1 EVO CR, featured groupsets like Shimano 105 or SRAM Rival eTap AXS. Regardless of the groupset, all models were specced with deep-section carbon wheels from Reynolds, enhancing the bike’s aerodynamic capabilities. The wheels were tubeless-ready and came fitted with Schwalbe Pro ONE Performance TLE tires.
The cockpit was a key area where Vitus invested in performance. Many models came with integrated carbon handlebars from Prime or Vision Metron, which further improved the bike’s aero profile and contributed to its clean look.
Performance on the Road
Reviews of the 2021 Vitus ZX-1 EVO consistently highlighted its performance. The bike’s stiffness and aero design made it an absolute powerhouse on flat and rolling terrain, where it excelled at holding speed. While some noted that the weight of the bike was not as light as some competitors, this was often overlooked once the bike was in motion. The handling was described as sharp and exciting, with a well-balanced feel that inspired confidence in corners and sprints.
The Vitus ZX-1 EVO from 2021 was a testament to the brand’s commitment to offering high-performance bikes at an accessible price. It delivered a professional-level aero experience, with a striking design and a well-considered spec list, solidifying its reputation as a leader in the value-for-money category of aero road bikes.