Polygon Strattos C9 AXS bike fit and size guide

Review the published geometry for the 2026 Polygon Strattos C9 AXS, compare supported sizes, and open the TrainCraft calculator with this bike preselected.

Supported sizes

XXS, XS, S, M, L, XL, XXL

Family

endurance geometry

This bike leans toward a taller front end and a more sustainable position for longer rides.

What to compare

Stack, reach, setup

Use this guide to compare stack, reach, and stock cockpit assumptions before choosing a frame size.

Open calculator with Polygon Strattos C9 AXS Open generic bike fit tool View original geometry source

Geometry and size breakdown

The calculator button opens the bike step with this model and size already selected. Then enter rider measurements and run the fit report.

Size	Stack	Reach	Top tube	Head tube	Stem	Crank	Fit calculator
XXS	516.9 mm	355 mm	498.4 mm	100 mm	90 mm	167.5 mm	Use in calculator
XS	531.1 mm	360 mm	507.2 mm	115 mm	100 mm	170 mm	Use in calculator
S	544.3 mm	369 mm	525.1 mm	125 mm	100 mm	170 mm	Use in calculator
M	555 mm	378 mm	542.4 mm	136 mm	110 mm	172.5 mm	Use in calculator
L	580 mm	387 mm	564.3 mm	162 mm	110 mm	172.5 mm	Use in calculator
XL	605 mm	396 mm	580.97 mm	191 mm	120 mm	175 mm	Use in calculator
XXL	630 mm	405 mm	597.61 mm	217 mm	120 mm	175 mm	Use in calculator

How to use this guide

Start with the size table to narrow the geometry range you actually want. Then open the calculator to compare that geometry against your body dimensions, flexibility, and fit priorities.

The TrainCraft bike fit tool models saddle height, cockpit reach, and bar drop using the frame geometry plus stock cockpit assumptions for the Polygon Strattos C9 AXS.

That is more useful than a generic height chart because two sizes can both fit your height while requiring very different stems, spacers, or saddle positions.

FAQ

What sizes are available for the Polygon Strattos C9 AXS?

TrainCraft currently tracks these Polygon Strattos C9 AXS sizes: XXS, XS, S, M, L, XL, XXL. The calculator uses each size's published geometry and stock cockpit assumptions to compare fit outcomes.

Can I use the TrainCraft calculator for Polygon Strattos C9 AXS sizing?

Yes. Open the calculator from this page to preload the Polygon Strattos C9 AXS, then compare sizes against your body measurements, fit priorities, flexibility, and riding posture preferences.

What should I compare on the Polygon Strattos C9 AXS before picking a size?

Start with stack, reach, effective top tube, and the stock stem/crank setup. TrainCraft uses those numbers to estimate cockpit reach, bar drop, saddle position, and how much adjustment headroom each size leaves.