Transition
Transition Spire Carbon Eagle 90
$9,700.00
Carbon Enduro / Big Mountain · 29"
The Spire is Transition's "nimble bruiser" — a 170mm-travel carbon enduro weapon that blends DH-bike capability with mid-travel efficiency (Marco Osborne won the Stone King Rally on one). The Eagle 90 build wraps the carbon frame (Japanese Toray fiber, EPS molding process) in a SRAM Eagle 90 Transmission drivetrain, with Fox Performance Elite 38 fork and Float X shock, and the geometry-adjusting flip chip that makes this a uniquely versatile big bike. Climbs better than you'd expect, descends like a freight train. Get inSpired.
At a Glance
- Frame: Carbon Fiber (Japanese Toray, EPS molding), 170mm rear travel, 29" wheels, BSA threaded BB, SRAM UDH, molded chainstay and down tube protection
- Fork: Fox Float 38 Performance Elite, 170mm travel, 44mm offset, GRIP2 damper
- Rear Shock: Fox Float X Performance Elite, 205x65mm trunnion mount
- Drivetrain: SRAM Eagle 90 T-Type Transmission, 12-speed (mechanical)
- Brakes: SRAM DB8 (or Motive), 4-piston, 200mm rotors (F/R)
Full Specifications
| Frame | Carbon Fiber (Japanese Toray, EPS molding), 170mm rear travel, 29" wheels, BSA threaded BB, SRAM UDH, molded chainstay and down tube protection |
| Fork | Fox Float 38 Performance Elite, 170mm travel, 44mm offset, GRIP2 damper |
| Rear Shock | Fox Float X Performance Elite, 205x65mm trunnion mount |
| Drivetrain | SRAM Eagle 90 T-Type Transmission, 12-speed (mechanical) |
| Shifter | SRAM Eagle 90 trigger |
| Derailleur | SRAM Eagle 90 T-Type |
| Cassette | SRAM XG-1275 Eagle, 10-52T, 12-speed |
| Chain | SRAM Eagle Flattop |
| Crankset | SRAM GX Eagle DUB, 30T, 165mm |
| Brakes | SRAM DB8 (or Motive), 4-piston, 200mm rotors (F/R) |
| Wheels | Stan's NoTubes or DT Swiss, Boost spacing |
| Tires | Maxxis Minion DHF/DHR II or Schwalbe Magic Mary/Big Betty, 29" x 2.5/2.4" |
| Dropper Post | OneUp V3 or Fox Transfer, size-dependent travel |
| Geometry | 63.0/63.5° head angle (high/low flip chip), 77.8° seat angle |
| Sizes | SM, MD, LG, XL (XXL on some years) |
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