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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 S7X weighs a respectable 9.11kg, 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 105 Di2
Lightning-fast gear changes, a wider 11-34T cassette range, and versatile 50/34T chainrings make conquering any terrain a breeze. Enjoy pro-level performance at an accessible price.

SHIMANO 105 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.

DEPENDABLE WHEELS
Roll confidently on Entity tubeless-ready alloy rims with smooth-rolling Novatec hubs, ready to lay down some weight. Their lightweight construction and 28c Schwalbe One tubeless-ready tyres strike an ideal balance of comfort, cornering grip, and low rolling resistance.

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
SUSPENSION
DRIVETRAIN
BRAKES
WHEELS
CONTACT POINTS
WEIGHT
Specs are subject to change based on availability.
Geometry
XS | S | M | L | XL | XXL | |
---|---|---|---|---|---|---|
Rider's height in cm | 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
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.
How To Unbox Your Strattos
Dial In Your Bike Fit
Dial In Your Tyre Pressures
How To Unbox Your Strattos
Dial In Your Bike Fit
Dial In Your Tyre Pressures

Polygon Strattos S7X - 105 Di2 Carbon Road Bike
Short Description
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Great Bike!
I bought a 2025 Stratos S7X in November, upgrading from an aluminum 2 x 8 speed specialized diverge. Since then I have put on about 1000 miles. This bike is awesome! Shipping to the house and initial setup went by without any issues. Took me about 15 minutes to put everything together and another 15 minutes to fit it to my liking. I am 6'1" / 200 lbs and went with the XXL, which is definitely the right size. I've taken it on several 30+ mile rides and it's been very comfortable, even on those longer days in the saddle. Only minor adjustments I had to make were a spring adjustment in the Di2 shift paddle and I had a local shop fine tune the shifting after the first 200 miles. Definitely recommend this bike, especially for the price.

Polygon Strattos S7X
I’m very happy with this bike, very comfortable I put about 120 miles on it already and so far so good. Very good experience with bikesonline.

Nimble and moves!
Disclaimer: I am a BikesOnline employee. I've road the Strattos S7X about 50 miles over a couple of rides in the last week and was very impressed by the bike's handling. The Strattos is quite nimble and corners very well. The 105 Di2 set up shifts effortlessly, has impressive engagement, and is a great lower cost alternative to Ultegra Di2. The texture on the hoods isn't as smooth at their Ultegra counterpoint - but also something I got used to over the course of riding. Looking into the future, I'd probably swap the 28 tires for 30s and add a a grippier saddle - both switches are purely a matter of preference. All in all, I really enjoyed the Strattos and look forward to ride it more this winter.

Very nice bike for the price
The bike was easy to assemble and it has all the bells and whistles I wanted. The frame is tolerant of the rough roads I'm often forced to ride and the 105 Di2 shifting seems just as solid as the Ultegra variant. Hard to beat the value for what I'd call an "entry level serious road bike."