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2024 Polygon

Strattos S8X

A carbon frame endurance bike with high-end components and shimano ultegra hydraulic disc brakes.
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Manufacturer Price

$3,199
FrameCarbon
ForkCarbon
Wheels700c Carbon
Drivetrain2 × 12 Electronic
GroupsetUltegra Di2
BrakesShimano Ultegra Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
Strattos S8X
Other Endurance bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

39 mph

Strattos S8X

39 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full STRATTOS model range

View Comparison
Sizing
XS

5'1" – 5'5"

SM

5'3" – 5'7"

MD

5'6" – 5'10"

LG

5'8" – 6'1"

XL

5'10" – 6'2"

XXL

6'0" – 6'5"

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews
Bikerumor
Polygon Strattos C is a Lighter, Comfortable Carbon All-Road Bike, Still Quite Affordable

Dec 2025 · Cory Benson

This carbon Polygon Strattos C all-road bike fits 34mm tires, and comes with Di2 and carbon wheels for less than three grand!

Read Review

Velo
Review: The Polygon Strattos S8X Checks Every Box on a Budget

Dec 2024 · Alvin Holbrook

The Polygon Strattos S8X road bike might be the least-expensive way to get Ultegra Di2, but is it any good? We find out in our review.

Read Review

Geometry
Specs
Build
Frame

ACX All-Round Uci Approved, Internally Routed, Pressfit BB86, 12x142mm

BB StandardBB86/BB92, Press Fit

Fork

Full Carbon, Taper 1-1/8" To 1-1/2", Flat Mount Disc Brake

Bottom Bracket

BB86/BB92, press-fit

Stem

Entity Xpert Alloy, 31.8mm, 10°

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

TypeRigid

Pedals

Not Included

Groupset
Rear Derailleur

Shimano Ultegra Di2 RD-R8150 Direct Attach

Front Derailleur

Shimano Ultegra Di2 FD-R8150 Braze-On

Crank

50/34T

Shifters

Shimano Ultegra Di2 ST-R8170, 2x12-Speed Dual Control Lever

Cassette

Shimano Ultegra CS-R8101, 11-34T

Chain

KMC X-12

Brakes

Front: Shimano Ultegra BR-R8170 Hydraulic Disc, 160mm RT-CL800 Rotor, Center Lock, Rear: Shimano Ultegra BR-R8170 Hydraulic Disc, 140mm RT-CL800 Rotor, Center Lock

TypeShimano Ultegra Hydraulic Disc

Wheels
Rims

Novatec R3, Carbon, 38mm Depth, 15mm Inner

Front Hub

Novatec D791SB-CL, 12x100mm, Straight Pull Spokes, 24H

Rear Hub

Novatec D792SB-CL-X12, 12x142mm, Straight Pull Spokes, 24H

Tires

Schwalbe One, Addix, Raceguard, Microskin, 700x28C, Tubeless ready*

Rider Notes
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First added September 3

Last updated August 23

Not listed for 282 days