

Transition Bikes
Spire Carbon Frame - 2026
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Highlights
- The Spire carbon uses premium Japanese Toray fiber using a unique latex coated EPS molding process to create tighter edge radius control using less material.
- Collet main pivot technology improves rear end stiffness and keeps your pivot hardware tight. Additional bearing shields prevent main pivot bearing contamination when washing your bike or riding in wet conditions.
- Fully integrated flush-mounted rubber frame protection
- Geo Adjust Chip: change the attitude of your bike with a simple flip of a chip.
- EnduroMAX suspension pivot bearings in standard sizes
- 180mm dual crown fork compatible
- Coil shock compatible
Description
170mm fork, Hi geo chip
| Size | SM | MD | LG | XL |
|---|---|---|---|---|
| Reach | 430 | 460 | 485 | 510 |
| Stack | 619 | 619 | 628 | 637 |
| Top Tube | 547 | 577 | 604 | 633 |
| Wheelbase | 1227 | 1257 | 1287 | 1322 |
| Head Tube° | 63° | 63° | 63° | 62° |
| Head Tube | 100 | 100 | 110 | 120 |
| Seat Tube° | 79.6° | 78.8° | 78.1° | 77.5° |
| Seat Tube | 360 | 390 | 430 | 460 |
| BB Height | 350 | 350 | 350 | 25350 |
| BB Drop | 25 | 25 | 25 | 25 |
| Standover | 685 | 700 | 715 | 730 |
| Chainstay | 446 | 446 | 446 | 452 |

