Polygon Tambora A4 / A5 / A9X geometry
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Size M
Render
Align
Geometry
| Size | S | M | L | XL |
|---|---|---|---|---|
| Stack mm | 566 | 591 | 621 | 648 |
| Reach mm | 371 | 383 | 400 | 415 |
| Head tube angle ° | 70.25 | 71.8 | 72.1 | 72.3 |
| Seat tube angle ° | 74.75 | 74.3 | 73.8 | 73.3 |
| Head tube length mm | 143 | 163 | 193 | 221 |
| Seat tube mm | 404 | 448 | 492 | 535 |
| Chainstay mm | 415 | 415 | 415 | 415 |
| BB drop mm | 79 | 79 | 79 | 79 |
| Stack to reach | 1.53 | 1.54 | 1.55 | 1.56 |
| Effective top tube mmi | 525 | 550 | 581 | 610 |
SizeMkey specs
Stack-to-reach (size M)1.54More relaxed (taller and shorter) than 79% of gravel frames in the database at comparable sizes.
Closest geometry matches (size M)
Matched by stack, reach and head tube angle.
More from Polygon
Nearest size to the Tambora A4 / A5 / A9X M.