2021 Polygon Strattos S5 Disc – Shimano 105 Road Bike

SKU: 50f469c89540 Category:


Stiff and efficient ALX Alloy frame is built from light & durable Hydroformed 6061 Aluminum tubes and feature a tapered head tube, 68mm threaded bottom bracket, internal cable routing and flat brake disc mount.


Super-light and vibration-absorbing material uses tapered steerer and 12x100mm thru-axle for increased stiffness.


Brings trickle-down technology and shifting performance from top-tier groups at unbeatable value.


Cable actuated hydraulic flat mount disc brake system is a great alternative to more premium full-hydraulic setups.



Disc Brakes on road bikes are perfect for riders who prefer having consistent performance regardless of weather conditions. It also allows bike builders to make stronger wheels and eliminated frame flex on key areas of the frame. For avid road cyclists, sportive regulars and everyday commuters, the Polygon Strattos S5 Disc combines a lightweight, durable and reliable alloy frame with the proven performance of Shimano 105 22 speed gear set, and the dependability of TPR’s Road Hydraulic Disc Brakes.

The Strattos frame has been reinforced to be able to cope with the increased stopping power that comes from disc brakes but it’s still made of Polygon’s new ALX Performance 6061 Hydroformed Aluminum, weighing only 1.35 Lbs and has been designed for improved bump absorption and vibration compliance. Also, used in high-performance cars, hydroforming injects fluid into a cylindrical frame tube to manipulate into a more beneficial shape which allows Polygon to reduce weight and increase stiffness in the key areas of the frame to improve ride quality. The frame is constructed with super smooth, double welded joints. The first weld is used for strength, then using a die grinder it is ground back to which a second weld is added to fill in any gaps. Lastly, the final grind and polish are applied, to give the frame joints an almost carbon like appearance. Not only does this frame look like carbon and ride like carbon, but it still also provides the incredible value of Aluminum.

Shimano 105 R7000 22 Speed groupset propels the Strattos S5 forward and adds understated performance to the bike. A full compact drivetrain, with frame-size specific crankset length, a 50/34 tooth crank, and an 11/28 tooth cassette ensure you can keep a high cadence on the steepest of uphills and yet gives you enough gears to sprint downhill. Similar to Shimano Dura-Ace and Ultegra, the R7000 crankset features fixed BCD, meaning you can swap the chainrings to 53-39T, 52-36T or 50-34T all using the same crank arm spider and there is no need to replace the whole crankset. The rear derailleur now also uses Shimano’s low-profile Shadow parallelogram design, which significantly reduces crash vulnerability and improves shift performance.

But it’s the new Disc Brakes where the Strattos shines through. Using the standard Shimano 105 shifters, Polygon spec’d the Strattos with the TRP Hydraulic Disc Brakes that utilize the cable action from the standard brake levers and converts that into hydraulic stopping power. To put it simply, you get the best of both worlds, the better hydraulic stopping power with much better modulation, and the cost savings from using standard shifters instead of a fully hydraulic system.

The wheelset on the Strattos S5 Disc is the new Entity clincher which is now tubeless-ready and disc brake specific. The wheels feature sealed bearings, semi-aero rims with 30mm profile, 24 spokes front and back, oversized freehub engagement pawls and a lighter rim sidewall. This results in a wheel that exudes quality and is able to reduce centrifugal weight due to the lighter rim. The Entity clincher is one of the lightest wheelsets in its category which has allowed it to keep rotational mass as low as possible, improving acceleration and handling. Matching these wheels with 28c tires aids in rider comfort and grip in all conditions. The wider tire profile allows you to run lower pressures, enhancing braking, cornering and comfort.

Completing the Strattos S5 Disc is Polygon’s in-house brand for components, Entity. This includes triple butted alloy bars, allowing for you to shift your body weight on the bike when attacking an uphill or tucking into the downhills.


How the Bike is Delivered to You

Your bike will arrive in a custom Bikes Online bike guard box as described in the video below.

Wistia video thumbnail


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