Polygon Tambora G4 bike fit and size guide

Review the published geometry for the 2024 Polygon Tambora G4, compare supported sizes, and open the TrainCraft calculator with this bike preselected.

Supported sizes

S, M, L, XL

Family

all-road geometry

This bike balances stability, comfort, and efficient power transfer for mixed-surface riding.

What to compare

Stack, reach, setup

Use this guide to compare stack, reach, and gravel-specific front-end assumptions before choosing a frame size.

Open calculator with Polygon Tambora G4 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
S	568 mm	369 mm	526 mm	143 mm	80 mm	170 mm	Use in calculator
M	593 mm	381 mm	551 mm	163 mm	90 mm	170 mm	Use in calculator
L	622 mm	397 mm	581 mm	193 mm	100 mm	172.5 mm	Use in calculator
XL	650 mm	412 mm	611 mm	221 mm	110 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 Tambora G4.

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 Tambora G4?

TrainCraft currently tracks these Polygon Tambora G4 sizes: S, M, L, XL. The calculator uses each size's published geometry and stock cockpit assumptions to compare fit outcomes.

Can I use the TrainCraft calculator for Polygon Tambora G4 sizing?

Yes. Open the calculator from this page to preload the Polygon Tambora G4, then compare sizes against your body measurements, fit priorities, flexibility, and riding posture preferences.

What should I compare on the Polygon Tambora G4 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.