2026 Transition Spire Alloy Eagle 90
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Transition Spire
Alloy Eagle 90
Alloy Eagle 90
2026 · 29" · 170mm · Aluminum
Frame & Suspension
Frame
6061 heat-treated alloy; molded chainstay, seatstay, and down tube protection
Rear Travel
170mm
Rear Shock
RockShox Super Deluxe Ultimate, trunnion mount, 205mm × 65mm stroke
Fork
RockShox ZEB Ultimate, 38mm stanchions, 44mm offset
Fork Travel
170mm
Head Tube
Straight, 56mm
Headset
FSA No.55R/57, ZS56 upper/lower
Cockpit
Handlebar
Burgtec Ride Wide Alloy Enduro, 35mm clamp — SM: 800mm / 20mm rise · MD: 780mm / 30mm rise · LG/XL: 800mm / 38mm rise
Stem
Burgtec Enduro MK3, 35mm length, 35mm bar clamp
Grips
ODI Longneck V2.1, lock-on
Brakes
Brakes
SRAM Maven Bronze, 4-piston · Rotors: SRAM CenterLine, 200mm
Levers
SRAM Maven Bronze Stealth, tool-free reach adjust
Drivetrain
Configuration
1× 12-speed
Shifter
SRAM Eagle 90 Transmission, 12-speed, MMX mounting bracket
Front Derailleur
None
Rear Derailleur
SRAM Eagle 90 Transmission, 12-speed
ISCG Tabs
ISCG05
Chainguide
e*thirteen Vario Enduro upper slider with bashguard
Cranks
SRAM Eagle 90 Transmission Alloy DUB, 165mm
Chainring
SRAM Eagle 90 Transmission, 30T
Bottom Bracket
SRAM DUB, 73mm English/BSA threaded
Pedals
None
Chain
SRAM GX Eagle Transmission Flattop, 12-speed
Cassette
SRAM GX Eagle Transmission XS-1275, 12-speed, 10–52T
Wheels & Tires
Wheel Size
29"
Rims
DT Swiss E 1900 Spline 30 Alloy, 30mm inner width
Hubs
DT Swiss 370 · 15×110mm Boost front · 12×148mm Boost rear with Ratchet LN freehub and XD driver
Spokes
DT Swiss Champion
Tires
Front: Schwalbe Magic Mary, Radial Trail Pro casing, Ultra Soft compound, 29" × 2.5"
Rear: Schwalbe Albert, Radial Gravity Pro casing, Soft compound, 29" × 2.5"
Rear: Schwalbe Albert, Radial Gravity Pro casing, Soft compound, 29" × 2.5"
Max Tire
29" × 2.6"
Seatpost & Saddle
Saddle
SDG Bel-Air V3
Dropper Post
OneUp Dropper — 150mm (SM) · 190mm (MD) · 210mm (LG) · 240mm (XL)
Post Diameter
31.6mm
Clamp
Single bolt, 34.9mm
General
Rear Dropout
12mm × 148mm (Boost)
Bottle Mounts
One inside front triangle, plus accessory mounts under top tube
Colors
Galactic Black, Ultra Violet
Warranty
Lifetime frame
Weight
TBA
Notes
- GiddyUp Four-Bar Horst-Link rear suspension design
- Geometry adjustable via two-position flip chip at lower shock mount
- Internal cable routing
- SRAM UDH (Universal Derailleur Hanger)
- Rear travel can be decreased to 160mm with 60mm-stroke shock
- Compatible with coil shocks and dual-crown forks
- Includes tubeless valves and tire sealant
- Frame weight, size MD with FOX FLOAT X2 Factory shock: 10.6 lbs (4.81 kg)
Geometry adjustable via two-position flip chip at lower shock mount (High / Low) · Available in SM, MD, LG, XL, XXL · Paste geometry numbers here when available
| Measurement | SMHigh / Low | MDHigh / Low | LGHigh / Low | XLHigh / Low | XXLHigh / Low |
|---|---|---|---|---|---|
| Top Tube Length | — | — | — | — | — |
| Reach | — | — | — | — | — |
| Stack | — | — | — | — | — |
| Head Tube Angle | — | — | — | — | — |
| Head Tube Length | — | — | — | — | — |
| Seat Tube Angle | — | — | — | — | — |
| Seat Tube Length | — | — | — | — | — |
| BB Height | — | — | — | — | — |
| Chainstay Length | — | — | — | — | — |
| Wheelbase | — | — | — | — | — |
Shipping Policy
Components:
All component items (wheels, drivetrains, suspension, brakes, etc.) ship within 2-5 business days of purchase.
Bicycles:
Complete bikes typically ship within 2–3 weeks due to build, tuning, and inspection times. You will receive tracking information as soon as your order is ready to ship.
Riding Gear & Apparel:
Riding gear and apparel orders (helmets, jerseys, gloves, etc.) ship within 1–3 business days.
Returns & Exchanges:
If you received the wrong size or wish to exchange an item, it must be returned in original condition—unused, uninstalled, and with all packaging intact.
For full details, please see our Refund Policy before initiating a return.
