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Today’s Deals2025 Transition
Spire Alloy GX
A 29″ aluminum frame full suspension enduro bike with high-end components.
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Manufacturer Price
$3,499| Weight | 36.0 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Full, 170 / 170mm |
| Fork | Fox Performance Elite Float 38 |
| Shock | Fox Float X Performance Elite |
| Wheels | 29″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | GX Eagle |
| Brakes | TRP DH-R EVO Hydraulic Disc |
| Seatpost | Dropper |
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Spire model range
View Comparison5'0" – 5'7"
5'4" – 6'0"
5'8" – 6'3"
6'0" – 6'7"
6'2" – 6'10"
🐐 Estimated
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
Summary
The Transition Spire is a robust and predictable enduro bike, praised for its overbuilt frame and progressive suspension design, making it a favorite for park and shuttle use. While it excels in downhill stability and fun, its weight and slack geometry may not suit all riders, especially those prioritizing climbing efficiency.
Predictable handling and suspension action
Overbuilt and bombproof frame
Progressive suspension design suitable for a wide range of sag settings
Excellent for park and shuttle use
Good value for money
Heavy (over 40lbs)
Slack head tube angle may not suit all riders
Not the best climber
Primer grey color may be too muted for some
Thin paint prone to wear
The Transition simply does not have any quirks.
BIKE MagazineIt would be the perfect park and shuttle rig for someone who wants to own a 170mm big bike but would not get to ride it as often as they would like.
BIKE MagazineTransition's ethos of 'Engineered to Party' and moniker of the Spire being a 'nimble bruiser' are spot on.
NSMBFeedback?
View all reviews
Aug 2024
Andrew’s final look at the 2021 Transition Spire and a few words about the next step in the Secondhand series.
May 2023 · Henry Quinney
Mike Kazimer, Dario DiGiulio, and Henry Quinney ride, rate and review each other's daily drivers, and talk about how some small changes can make a big difference.
Feb 2022
How'd the Spire turn out after a couple months of bashing around the Shore? Tim Coleman has the answers about the "nimble bruiser..."
Feb 2022 · Ian Collins
Shortly after launching a freshly updated aluminum Patrol and an all new model dubbed the Spire, Transition Bikes sent me the latter
| Frame | Spire Alloy 170mm BB Standard: BSA, 73mm, Threaded Hanger Standard: UDH Tire Clearance: 2.6" Colors: Fade to Black; Hint of Blue |
|---|---|
| Fork | Fox Float 38 Performance Elite, (170mm) Travel: 170mm Spring Type: Air |
| Shock | Fox Float X Performance Elite, (205x65mm) Travel: 170mm |
| Bottom Bracket | 73mm BSA Threaded |
| Headset | FSA NO.55R/57 |
| Stem | ANVL Swage (40mm) |
| Handlebar | ANVL Mandrel Alloy 35, SM (800x20mm), MD/LG/XL (800x30mm), XXL(800x40mm) |
| Saddle | SDG Bel Air 3 |
| Seatpost | OneUp Dropper Post Type: Dropper |
| Grips | ODI Elite Flow |
| Rear Derailleur | SRAM GX Eagle |
|---|---|
| Crank | SRAM GX Eagle DUB, (30t/165mm) |
| Shifters | SRAM GX Eagle |
| Cassette | SRAM XG 1275 (10-52t) |
| Chain | SRAM GX Eagle |
| Chain Guide | OneUp Bash Guide |
| Brakes | TRP DH-R EVO Type: TRP DH-R EVO Hydraulic Disc |
| Rims | RaceFace Aeffect R |
|---|---|
| Spokes | RaceFace 2.0/1.7/2.0 |
| Front Hub | RaceFace Trace 28H |
| Rear Hub | RaceFace Trace 28H |
| Tires | Front: Schwalbe Magic Mary, Super Trail, Soft (29x2.4), Rear: Schwalbe Big Betty, Super Trail, Soft (29x2.4) |
| Disc Rotors | TRP R1 2.3 (223/203mm) |
First added June 21
Last updated December 6
Not listed for 203 days