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2025 Polygon

Strattos S7X

A carbon frame endurance bike with upper mid-range components and shimano 105 hydraulic disc brakes.

Manufacturer Price

$2,399$2,499
Weight20.1 lbs  
FrameCarbon
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 12 Electronic
Groupset105 Di2
BrakesShimano 105 Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
Strattos S7X
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 S7X

39 mph

Similar Bikes

Highest gear

(descending)

Spec Level

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

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.

Price History
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

ColorsBlack; Blue

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 Alloy, 27.2 x 350mm, 15mm, Integrated Shape W/ Bolt

TypeRigid

Pedals

Not Included

Groupset
Rear Derailleur

Shimano 105 Di2 RD-R7150 Direct Attach

Front Derailleur

Shimano 105 Di2 FD-R7150 Braze-On

Crank

50/34T

Shifters

Shimano 105 Di2 ST-R7170, 2x12-Speed Dual Control Lever

Cassette

Shimano 105 CS-R7101, 11-34T

Chain

KMC X-12

Brakes

Front: Shimano 105 BR-R7120 Hydraulic Disc, 160mm SM-RT70 Rotor, Center Lock, Rear: Shimano 105 BR-R7100 Hydraulic Disc, 140mm SM-RT70 Rotor, Center Lock

TypeShimano 105 Hydraulic Disc

Wheels
Rims

Entity Alloy Double Wall, 30mm Depth, 19mm Inner, 24H, Tubeless Ready

Front Hub

Novatec D791SB-CL, 12x100mm

Rear Hub

Novatec D792SB-CL-X12, 12x142mm

Tires

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

Rider Notes
Riders Also Viewed

First added June 17

Last updated May 30