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Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
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Description

THE PERFECT BLEND

The Polygon Strattos strikes the perfect balance between endurance comfort and race-inspired performance. Its geometry offers an upright position that reduces strain for long rides, yet remains aggressive enough for a powerful and efficient ride. Thanks to the carbon frame, the Strattos S8X weighs an impressive 8.21kg, perfect for crushing gran fondos or clocking up weekend miles.

EFFICIENCY AND SPEED

Building on the classic lines and styling of a race bike, the lightweight carbon frame features subtle aerodynamic cues on the tubing and internal cable routing to reduce wind residence. While, the stiff downtube, thru-axles, and wide bottom bracket ensure an efficient platform for power transfer to put down some watts!

ENDURING COMFORT

Don't sacrifice comfort for speed. The Strattos utilize flex stays, dropped seat stays, and a carbon seatpost with an internal wedge to absorb road vibrations, keeping you comfortable on long rides. The FULL carbon fork and steerer also reduce weight in the front end for improved comfort while maintaining precise handling.

A TRUSTED BRAND

Polygon boasts over 30 years of experience and is known for offering high-performance bikes at competitive prices. Polygon road bikes have led to numerous national titles and even a victory at the 2023 Tour De Taiwan. With a 5-year warranty, you can trust Polygon to deliver from the factory to the track.

SHIMANO ULTEGRA Di2

Nearly identical to Dura-Ace but lighter on your wallet, it boasts lightning-fast, buttery smooth shifting, a wide-range 11-34T cassette, and versatile 50/34T chainrings. Conquer any terrain with this workhorse groupset, renowned for its reliability, and exceptional value.

SHIMANO ULTEGRA DISC BRAKES

Hydraulic disc brakes are great for all riding conditions - easily boosting your confidence, even on the wettest of days. Aside from the versatility of hydraulic disc brakes, compared to rim brakes, they last longer, increase the lifespan of your wheels, and provide much more stopping power.

CARBON WHEELS

Upgrade your ride with the Novatec R3 carbon wheels, designed for discerning road cyclists seeking a lightweight, responsive, and durable wheelset. The 38mm rim depth strikes the perfect balance between aerodynamic efficiency and crosswind stability, wrapped in tubeless-ready Schwalbe One 28c tyres, this is a combo you can depend on.

CARBON SEATPOST

The Polygon Strattos' carbon seatpost helps to reduce road vibrations, providing a smoother and more comfortable ride. Its lightweight construction also helps shave precious grams, improving overall performance.

Components

FRAMESET
FRAME
ACX All-Round Uci Approved, Internally Routed, Pressfit BB86, 12x142mm
SUSPENSION
FORK
Full Carbon, Taper 1-1/8" To 1-1/2", Flat Mount Disc Brake
DRIVETRAIN
REAR DERAILLEUR
Shimano Ultegra Di2 RD-R8150 Direct Attach
FRONT DERAILLEUR
Shimano Ultegra Di2 FD-R8150 Braze-On
SHIFTER
Shimano Ultegra Di2 ST-R8170, 2x12-Speed Dual Control Lever
CRANK
Shimano Ultegra FC-R8100
CHAINRING
50/34T
CASSETTE
Shimano Ultegra CS-R8101, 11-34T
CHAIN
KMC X-12
BRAKES
FRONT BRAKE
Shimano Ultegra BR-R8170 Hydraulic Disc, 160mm RT-CL800 Rotor, Center Lock
REAR BRAKE
Shimano Ultegra BR-R8170 Hydraulic Disc, 140mm RT-CL800 Rotor, Center Lock
WHEELS
REAR HUB
Novatec D792SB-CL-X12, 12x142mm, Straight Pull Spokes, 24H
RIM
Novatec R3, Carbon, 38mm Depth, 15mm Inner
TYRE
Schwalbe One, Addix, Raceguard, Microskin, 700x28C, Tubeless ready*
CONTACT POINTS
HANDLEBAR
Entity Xpert Alloy, 31.8mm, 125mm Drop, 70mm Reach
SADDLE
Entity Flux2, Cr-Mo Ø 7mm
SEATPOST
Entity Xpert Carbon, 27.2 x 350mm, 15mm, Integrated Shape W/ Bolt
STEM
Entity Xpert Alloy, 31.8mm, 10°
WEIGHT
BIKE WEIGHT
18.1lbs (8.21kg)

Geometry

XS S M L XL XXL
Rider's height 5'1"–5'5" 5'4"–5'7" 5'6"–5'9" 5'8"–6'0" 5'11"–6'2" 6'1"–6'5"
(A)Stack 495 511 534 558 584 612
(B) Reach 383 384 387 390 392 403
(C) Head Tube Angle 72 72.5 73 73 73 73
(D) Head Tube Length 90 105 130 155 185 215
(E) Seat Tube Angle 75 74.5 74 73.5 73 73
(F) Seat Tube Length 454 474 500 525 554 584
(G) Top Tube Effective 515 525 540 555 570 590
(H) Bottom Bracket Height 271.5 271.5 274 274 277 277
(I) Bottom Bracket Offset 72.5 72.5 70 70 67.5 67.5
(J) Chainstay 415 415 415 415 417 417
(K) Wheel Base 976 977 985 995 1008 1028
(L) Standover Height 729 749 776 801 832 862
Handlebar Width 400 400 400 420 420 420
Stem Length 90 90 100 100 110 110
Crank Length 165 170 170 170 172.5 172.5

Assembly

Your bike needs minor assembly before riding; use the tools and videos included.

As a guide, it'll take 10-40min depending on whether you're an experienced bike assembler or have little to no mechanical experience.

Side Note: Your cables will stretch during the initial bed-in period and must be adjusted by an experienced mechanic around 150km of riding.

Step 1

How To Unbox Your Strattos

Step 2

Dial In Your Bike Fit

Step 3

Dial In Your Tyre Pressures

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Customer Reviews
5.0 Based on 20 Reviews
5 ★
95% 
19
4 ★
5% 
1
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
0
Customer Photos
i
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike - Customer Photo From Joseph Carbonarii
2025 Polygon Strattos S8X - Road Bike [Size: L (height: 5i
2025 Polygon Strattos S8X - Road Bike [Size: L (height: 5i
2025 Polygon Strattos S8X - Road Bike [Size: L (height: 5i
2025 Polygon Strattos S8X - Road Bike [Size: L (height: 5i
2025 Polygon Strattos S8X - Road Bike [Size: L (height: 5i
2025 Polygon Strattos S8X - Road Bike [Size: XL (height: 5i
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike - Customer Photo From Rick Ei
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike - Customer Photo From Rick Ei
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike - Customer Photo From Rick Ei
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike - Customer Photo From Rick Ei
Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike - Customer Photo From Rick Ei
Write a Review Ask a Question

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Filter Reviews:
D
05/04/2025
DL
United States United States

Happy customer

Having built 3 Campagnolo Chorus equipped road bikes from frames, groupos, and wheels, as well as owing several Shimano Ultegra bikes, I am not easily swayed by the hype of brand names - as logos are superficial. The quality of the components is what counts. Although I have never heard of Polygon from Indonesia until recently, I found this particular bike to be worth a "gamble," a bike I couldn't have put together from scratch for equal cost. My gamble paid off! It is definitely worth the money. First, of all, Mr. Ryan Stock, the sales supervisor, was cordial and helpful, kept me informed of the availability of the S size I was after. And when it arrived at the warehouse, the delivery time to my house surprised me, super fast. The bike was very well packaged, and contains all the tools necessary (although for me, those tools were not needed, a nice gesture, nevertheless). It even includes a little toy bottle opener gift of bicycle keychain thing. To put the bike together is not difficult, but it is a bit more than just knowing the left pedal is mounted counterclockwise. The CF seat post is quite long, blocked by the bottle screw, the post can only be inserted so far. It is too tall for me. The way it is, I think someone 5'8" or even 5'9" can ride it, if the TT is not too short for that individual. I gauged the bike size by the TT length, about 52 cm for S, as most of my other bikes (some Medium bikes are 52 cm TT). I had to saw off 11cm from the seat post to accommodate my leg length. To take the battery out of the seat post was a bit concerning in the beginning, as no Youtube instruction was available. Finally, I decided to hammer gently the catching edge of the insert expander using a large flathead screwdriver. Once you understand how it was put together, super easy. Recommend cutting the CF tubing with something like a Dremel, as it would fray CF by using a hacksaw. And 2 leads to 3 poles of the battery? No clear instruction anywhere. The way to do it is, the center pole must be used, then using either the right or the left for the other lead is okay. Back to the TT, it does not slant as much as my other bikes for easy dismount, can be a problem for shorter leg riders. Structurally, I am sure it's stronger having a larger triangle. Other tidbits? The included paper documentations are rather useless, and so are the reflectors. Don't know of anyone riding a bike of this level using reflectors. Might as well include a hat that says Dork!. Polygon could save a dollar or two by not including the reflectors and the paperwork. The handlebar tape is quite nice and plush, unlike some other reviewers had complained about being too thin. Oh, forgot they also included a little bell so you don't have to yell, On your left! Still debating on if I should mount that bell. The bike doesn't include pedals nor bottle cages, not uncommon for most bike purchases. The seat is generic, soft, and slightly wide to accommodate both sexes. I do not see the need to change it for now. The 38mm CF wheels are what sold me this bike, as I could be okay with 105 level components. For a few hundred dollars more to go to Ultegra level, and CF wheels? Okay, I bought into it. So far I only test rode 6 miles around the neighborhood, no problem at all, pumped up the 28mm wide tires to 85 psi (max of 95) Overall, I am very satisfied with the purchase, and I would not hesitate in recommending others to this site. If you are thinking of making a purchase, do your homework on size, as that's the most important factor in choosing a bike. TT length can serve as a key guide.

Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
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DG
04/30/2025
Dimas G.
United States United States

Polygon S8x

I tried my Polygon for the first time yesterday and was completely blown away by it! My friends were all blown away by the quality and affordability of this bycicle. Works , feels , handles great

Polygon Strattos S8X - Ultegra Di2 Carbon Road Bike
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