Polygon Strattos S4 Shimano Tiagra Road Bike

WAS $949.00 You Save $100.00

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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 $949 $1,099 $1,599
Extras         no pedals



Polygon Strattos S4

Trek Emonda ALR 4 (2017)



ALX Endurance Alloy Frame

Ultralight 300 Series Alpha Aluminium, Invisible Weld Technology, DuoTrap S compatible, E2 tapered head tube, BB86.5



ACX Endurance Carbon Fork with Tapered Carbon Steerer

Émonda carbon, E2 tapered steerer



Entity Sport, Alloy, 40cm (46-50) 42cm (53-58)

Bontrager Race VR-C, 31.8mm



Entity Sport, Alloy, 90mm (46-50) 100mm (53-56) 110mm (58)

Bontrager Elite, 31.8mm



FSA No. 42/ABC Tapered (42/52mm)

Integrated, cartridge bearing, sealed, 1-1/8" top, 1.5" bottom



Entity Flux Saddle

Bontrager Montrose Comp



Entity Sport, Alloy, 27.2x350mm

Bontrager alloy



Shimano Tiagra FC-4700 50/34, 170mm (46-50) 172.5mm (53-56) 175mm (58)

Shimano Tiagra, 50/34 (compact)



Shimano Hollowtech 2

Press Fit

Polygon better


KMC X-10

Shimano Tiagra

Trek better


Shimano CS-HG500, 12-28T

Shimano Tiagra 12x28T

Trek better


Shimano Tiagra FD-4700

Shimano Tiagra



Shimano Tiagra RD-4700SS

Shimano Tiagra



Shimano Tiagra ST-4700

Shimano Tiagra



Shimano Tiagra ST-4700

Shimano Tiagra



Shimano Tiagra BR-4700

Shimano Tiagra



Alloy flat cage


Polygon better


Schwalbe Lugano 700x25C

Bontrager R1 Hard-Case Lite, 700x25c



Entity XL2, Sealed Bearing Hubs, 30mm rims

Bontrager Alloy wheelset, alloy hubs

Polygon Better


Yes (some regional and remote postcodes excluded)


Polygon Better



$1,799 (Source: Trek Aust Nov 2017)

$850 difference

Size Chart






RIDER HEIGHT 160-170cm 165-175cm 170-180cm 175-185cm 180-190cm
SEAT TUBE LENGTH 47cm 50cm 53cm 56cm 59cm


Note: If you are in between sizes, measure your wingspan. If it is greater than your height, go for the frame size up. If your height is greater than your wingspan, go for a frame size down.




Sizes (A) Stack (mm) (B) Reach (mm) (C) Head Tube Angle (D) Head Tube Length (mm) (E) Head Tube Diameter (mm) (F) Seat Tube Angle (G) Seat Tube Length (C-T) (mm) (H) Top Tube Actual (mm) (I) Top Tube Effective (mm) (J) Front Center (mm) (K) Fork Offset (mm) (L) Rear Center (mm) (M) BB Height (Ground Clerance) (mm) (N) BB Height (BB Drop/Rise) (O) Stand Over Height (mm) (P) Rear Wheel Axle / O.L.D (mm) (Q) Seatpost Size (mm)
47 515 383 71 115 Tapered 47/42~58/52 74 460 515 530 585 43 425 270 70 Drop 684 130 27.2
50 531 378 71 135 Tapered 47/42~58/52 74 490 516 530 586 43 425 270 70 Drop 732 130 27.2
53 554 381 72 155 Tapered 47/42~58/52 73.5 520 531 545 588 43 425 270 70 Drop 760 130 27.2
56 584 386 72.5 185 Tapered 47/42~58/52 73 550 550 565 598 43 430 270 70 Drop 790 130 27.2
58 600 406 73 200 Tapered 47/42~58/52 73 570 576 590 618 43 430 270 70 Drop 809 130 27.2


We understand how important shipping is once you click "buy now", that's why we have the following policies

Australian Warehouse

All products are in stock and ready to ship from our Sydney warehouse (with the exception of preordered bikes, which have the dispatch date illustrated)

Next day dispatch

All orders received by 5 pm AEST will usually be dispatched the following business day. If an order is placed on the weekend or public holiday, please note dispatch will usually be the next working day. For tracked shipments, please allow 12 hours for tracking to begin.

Shipping of Parts, Accessories and Apparel

Economy Shipping

There is free delivery available on all small parcels Australia wide using tracked services of Australia Post or Fastway, no minimum order value required! Estimated delivery time is 4-9 business days. 

Express Shipping

We do also offer Express Shipping for a small additional fee on parts, accessories and apparel orders. Estimated delivery time on Express Shipping is 1 to 4 business days.

Shipping of Bikes

Shipping of bikes and other bulky goods is free to 85% of residences in Australia. However, some postcodes incur a surcharge starting from $29. 

Once shipped you will be issued a consignment number which can be used to track your parcel. We use Direct Freight Express for deliveries and you can track your delivery by calling 1300 347 397 or online at www.directfreight.com.au


We’re so confident that you’ll love our extensive range of bikes, that we’ll let you ride one as your own for a full 14 days and if you don’t like it, simply e-mail us at sales@bicyclesonline.com.au and we’ll pick it up from you, free of charge! Just make sure you keep the box so it can be re-used to send it back. Click here for more information. 

All of our bicycles come with a Free Pro Build valued at $99. This means that your bicycle will be pre built by our professional mechanics. For your convenience, safety and comfort all our bikes are fully assembled prior to delivery. The bike is then packaged back into a box for secure shipment.


When your bike arrives, all you have to attach is the front wheel, the handlebar and pedals, everything else has been done – the headset has been adjusted, wheels trued, pedals and seat post greased, brakes and gears calibrated, and the tyres have been pumped up (please note upon arrival, in some cases you may need to add more air to tyres).

Most companies simply sell you the bike as it comes from the factory, which will require significant know-how to get your bike on the road. Currently we are the only Australian company providing this service, and have the 14 day test ride to back it up.

All the tools required to assemble the bike are included. 

Please note, that all bicycles whether purchased online or instore, are mechanical devices and need to be serviced regularly to ensure proper functioning. New gear and brake cables, will stretch during the initial bed-in period, and will need to be adjusted after approximately 150-300km. 

Whilst your new bicycle will have already gone through our Pro Build process, you will still need to complete some minor final assembly steps when you take your bicycle out of its box.

Please follow the video playlist below to correctly complete the setup of your new bike:


Assembly Time:

  • 10-15min - You have assembled bikes before
  • 15-25min - You are mechanically handy
  • 30-40min - Never assembled a bike and working with tools isn't your thing


Unboxing your bike:

Start by carefully opening the top flap to expose the contents. You will see the bike with plenty of protective packaging and next to the rear wheel, the saddle & seatpost, a small cardboard box where your pedals, tools, bell and reflectors are. If you ordered any other products with the bike, it is likely they were placed on the bottom of the box as well. Remove all the loose items before pulling the bike out of the box and gently placing it on the floor.

Keep the box and all the protective packaging found on the bike in case you choose to change frame sizes, upgrade/downgrade the bike, or return the bike for a full refund under the 14 Day Test Ride Policy.


How to install a quick release front wheel:



Road brake setup:



How to Install Handlebars and faceplate:


How to install pedals on your bike:


Congratulations on your Purchase

This bicycle is backed by a LIFETIME factory warranty on frame and full manufacturer’s warranty on parts. Lifetime warranty refers to the lifetime of the original owner.

Warranty is valid only for bicycle that has been properly and well-maintained under the following conditions:

Warranty includes:

  • All damaged or fractured or broken frame / fork / component which was caused by manufacturing or assembling error in factory.
  • Non functioning mechanism caused by manufacturing error in factory.

Warranty is NOT valid for:

  • Incorrect assembly, i.e pedals installed in the wrong crank arm. 
  • Normal degradation caused by frequent use, such as degrading brake shoe, deflated tire, etc
  • Surface defects, such as stained, marred, defaced, etc
  • Damaged caused by misuse or accident
  • Other damages which are not caused by factory error
  • Bicycle which has been sold to other party
  • Bicycle used in commercial, such as rented
  • Bicycle which has not been well-maintained

For any damages which is guaranteed by the brand as the first condition above, the brand will repair or replace damaged frame / fork / component with the one of the same brand or similar.

Warranty is valid for all Polygon and Marin bicycles to the original owner only, by showing the purchase invoice.  

To make a claim click here.

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