Transition call the Spire the "Nimble Bruiser". It's a lot of bike, but it still pedals well.
We won the "Teams" category of the 2022 Scottish Enduro Series, two of our three riders were on alloy Spires, we think that's a good demonstration of the capabilities of the Spire.
- 170 mm 29er with a 63-degree head angle (which can be set even slacker).
- Collet main pivot axle and Enduro MAX bearings.
- Accessory mount.
- Lifetime warranty for original owner.
- Flush mounted rubber frame protection.
- Two chainstay sizes (S/M/L and XL/XXL).
- Dual crown fork compatible.
- 2.6" tyre clearance.
- Carbon frame features internal cable routing with guides.
- Threaded BB - Boost axles - SRAM UDH (Universal Derailleur Hanger).
Transition Spire Geometry & Sizing
| Transition Spire Geometry | |||||
|---|---|---|---|---|---|
| Sizes in MM | S High/Low |
M High/Low |
L High/Low |
XL High/Low |
XXL High/Low |
| A: Stack | 619/624 | 619/624 | 628/633 | 637/642 | 646/651 |
| B: Reach | 430/425 | 460/455 | 485/480 | 510/505 | 535/530 |
| C: Head Tube Angle |
63/62.5° | 63/62.5° | 63/62.5° | 63/62.5° | 63/62.5° |
| D: Head Tube Length |
100 | 100 | 110 | 120 | 130 |
| E: Effective Seat Tube Angle |
79.6/79.1° | 78.8/78.3° | 78.1/77.6° | 77.5/77° | 77.2/76.7° |
| F: Seat Tube Length |
360 | 390 | 430 | 460 | 490 |
| G: Effective Top Tube |
547/550 | 577/580 | 605/608 | 633/636 | 661/664 |
| H: BB Height | 350/343 | 350/343 | 350/343 | 350/343 | 350/343 |
| I: BB Drop | 25/32 | 25/32 | 25/32 | 25/32 | 25/32 |
| J: Chainstay Length | 446/448 | 446/448 | 446/448 | 446/448 | 446/448 |
| K: Wheelbase | 1227/1229 | 1257/1259 | 1287/1289 | 1322/1324 | 1352/1354 |
| L: Standover | 685/680 | 700/695 | 715/710 | 730/725 | 745/740 |
| M: Fork Offset | 44 | 44 | 44 | 44 | 44 |
| Seatpost Diameter | 31.6 | 31.6 | 31.6 | 31.6 | 31.6 |
| Handlebar Width | 800 | 800 | 800 | 800 | 800 |
| Stem Length | 40 | 40 | 40 | 40 | 40 |
| Crank Length | 165 | 165 | 165 | 165 | 165 |
