Norco Threshold A Forma geometry
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Size 55.5
Render
Align
Geometry
| Size | 45.5 | 48 | 50.0 | 53 | 55.5 |
|---|---|---|---|---|---|
| Stack mm | 514 | 523 | 534 | 552 | 569 |
| Reach mm | 362 | 367 | 372 | 379 | 389 |
| Head tube angle ° | 70.0 | 70.0 | 70.5 | 71.5 | 72.25 |
| Seat tube angle ° | 75.5 | 75.0 | 74.5 | 74.0 | 73.75 |
| Head tube length mm | 95 | 105 | 115 | 130 | 145 |
| Seat tube mm | 455 | 480 | 505 | 530 | 555 |
| Chainstay mm | 425 | 425 | 425 | 425 | 425 |
| BB drop mm | 67.5 | 67.5 | 67.5 | 67.5 | 67.5 |
| Stack to reach | 1.42 | 1.43 | 1.44 | 1.46 | 1.46 |
| Effective top tube mmi | 495 | 507 | 520 | 537 | 555 |
Size55.5key specs
Stack-to-reach (size 55.5)1.46More aggressive (lower and longer) than 73% of gravel frames in the database at comparable sizes.
Closest geometry matches (size 55.5)
Matched by stack, reach and head tube angle.
More from Norco
Nearest size to the Threshold A Forma 55.5.