Polygon Strattos S4 Shimano Tiagra Road Bike

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New for this year, the Polygon Strattos S4 is Polygon's best value road bike for novice to intermediate riders, and commuters.

Polygon accumulates an incredible amount of knowledge from building frames for so many other top tier brands and in the S4 they have been able to consolidate their expertise into building a completely new endurance frame for this year.

The ride quality on the Strattos S4 alloy frame is second to none, due to its slightly upright riding position and vertically compliant seatstays that reduce road noise and attenuate big bumps in the road. Up front, the brand new ACX full Carbon fork featuring a tapered carbon steerer is unheard off at this price point. Polygon is known for trickling down its own technology and this is a pure example of a component only available to top of the range bikes in past years that is now available on beginner and intermediate level bikes. The other not so minor details include internal routing for gear and brake cables, BSA external bottom bracket and full compatibility with standard mount rear pannier racks.

The bike features Shimano Tiagra 20 speed groupset. For years it has played second fiddle to the popular Shimano 105. However with the latest update, its worth looking very closely at the groupsets, as you’ll notice only one difference. Shimano 105 has 11 speeds, Shimano Tiagra has 10. All other components are extremely similar in weight, performance, durability and riding feel. If you've been told that your new bike needs to have at the very least Shimano 105 gears, that's because whomever told you that never tried Shimano Tiagra 4700. The groupset features fully integrated shifters and brakes, internal brake and gear cables, same ergonomics and even the same gear range as top tier Shimano groupsets – the only difference being you are missing out on one less cadence option. With all this considered you might be hard pressed to justify anything else.

Keeping you rolling fast, the Entity XL2 wheelset brings previously inaccessible expensive technology to the masses. The XL2 features sealed bearings, semi aero rims with 30mm profile, 28 spokes front and back, oversized freehub engagement pawls and a machined alloy brake surface. This results in wheel that exudes quality and performance. Schwalbe's brand new Lugano 25c tyres are mounted on these rims for optimal durability and all-weather grip.

Key Features:

  • ALX Advance Endurance Alloy Frame
  • ACX Advance Endurance Carbon Fork with Tapered Carbon steerer
  • Full Shimano Tiagra 4700 groupset 20 Speed
  • Shimano Integrated bottom bracket
  • Entity XL2 Clincher wheelset with sealed bearings (made by Mavic)
  • Schwalbe Lugano 700x25C
  • Weight = 9.9kg (53cm frame)
  • LIFETIME Warranty on frame
  • Full manufacturer’s warranty on parts 


Model Comparison Chart


Strattos S2

Strattos S3

Strattos S4

Strattos S5

Strattos S7

Forks Light Weight Carbon with Alloy Standard Steerer Light Weight Carbon with Alloy Standard Steerer ACX Endurance road Carbon Taper Steerer ACX Endurance road Carbon Taper Steerer ACX Endurance road Carbon Taper Steerer
Frame ALX Advance Endurance Alloy ALX Advance Endurance Alloy ALX Advance Endurance Alloy ALX Advance Endurance Alloy ACX Endurance Carbon Frame
Weight 10.72kg 10.2kg 9.9kg 9.3kg 8.0kg
Drivetrain Shimano Claris Shimano Sora Shimano Tiagra Shimano 105 Shimano 105
Speed 16 Speed 18 Speed 20 Speed 22 Speed 22 Speed
Brakes Alloy Brake Caliper Tektro R369 Shimano Tiagra BR-4700 Shimano 105 BR-5800 Shimano 105 BR-5800
Wheelset Araya AR-713 Rims with Alloy hubs Araya SA-730 Rims with Alloy hubs Entity XL2, 28H Entity XL2, 28H, Sealed Bearing Hubs Entity XL3, 20H, Sealed Bearing Hubs
Price $599 $749 $899 $1,099 $1,599
Extras         no pedals


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