Choosing between an all-round road bike and an aero race bike can be tough, especially whenboth come from the same brand. To answer the question we hear most often—should you buya Polygon Strattos or a Helios A?—I took both bikes down to Wollongong for back-to-backtesting. In this head-to-head review I’ll share what makes each bike unique, how they ride inthe real world and which riders will benefit most from each model.

Right away, the Helios A feels every bit the race bike it was designed to be. The aero carbonframe and fork are shaped to slice through the wind, and all cables are routed internally for asuper-clean look. An integrated one-piece carbon handlebar and stem create a stiff front endand a seamless transition between bar and frame. The bike rolls on deep 50 mm carbon wheelsfrom Entity that maintain speed on the flats and feel planted in crosswinds. Our test bike wasfitted with Shimano’s Ultegra Di2 12-speed drivetrain for buttery-smooth shifting and acompact 50/34 chainset that lets you maintain high cadence on rolling terrain. According toracing bicycle design principles, race bikes prioritise minimising aerodynamic drag, rollingresistance and weight while balancing stiffness for pedalling efficiency[3]—and the Heliosepitomises that philosophy.

The Strattos has been Polygon’s go-to all-round road bike for years, and it shows in the way itbalances comfort, climbing ability and everyday practicality. Instead of deep carbon wheels, theStrattos uses alloy rims with 28- or 30-spoke counts that add a bit of compliance and durabilityfor rougher roads. The separate handlebar and stem make it easy to fine-tune your fit, and theslightly taller head tube puts you in a more upright, endurance-friendly position. Our Strattostester came with Shimano 105 mechanical shifting and mid-depth alloy wheels that acceleratequickly on climbs. When you get out of the saddle, the bike feels stable and composed, makingit a great choice for long rides or mixed terrain. Both the frame and fork are compatible withwider tyres and tubeless setups, so you can improve comfort and grip by running lowerpressures[2].

On the road, the differences between these bikes are noticeable. The Helios A surges forwardwith every pedal stroke; its stiff frame and deep wheels encourage you to stay in an aero tuckand push big gears. It excels on flat and rolling terrain, where its aerodynamic advantage letsyou carry more speed with less effort. However, after a few hours in the saddle you’ll feel moreroad buzz compared to the Strattos, and on steep climbs the extra weight of the deep wheelsbecomes apparent. The Strattos, by contrast, feels lively and comfortable. It spins up quickly onclimbs, handles rough pavement with ease and offers a more relaxed riding position. If you’replanning century rides or weekend adventures with friends, the Strattos will likely leave youfresher at the finish. Ultimately, choose the Helios A if racing and top-end speed are yourpriorities[3]; choose the Strattos if you value comfort, versatility and value for money.