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Today’s Deals2021 Transition
Spire Alloy Frameset
A 29″ aluminum frame full suspension enduro frameset.
Manufacturer Price
$2,299| Frame | Aluminum |
|---|---|
| Suspension | Full, 170 / 170mm |
| Shock | Fox Float X2 Factory |
| Wheels | 29″ |
5'0" – 5'7"
5'4" – 6'0"
5'8" – 6'3"
6'0" – 6'7"
6'2" – 6'10"
🐐 Estimated
None yet.
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Summary
The Transition Spire is a versatile enduro bike that excels downhill with its stable, confidence-inspiring ride and capable geometry, while still managing climbs reasonably well despite its weight. Its suspension setup, including the DVO fork and Fox Vanilla RC / Marzocchi CR shock, provides a smooth and supple ride. The bike's adjustable geometry and sensible spec make it adaptable to various riding styles and terrains.
Downhill bike like descending capabilities
Adjustable geometry via flip chip
Slack head angle and steep seat tube angle for a commanding riding position
Supple suspension provides traction and a smooth ride
Sensible parts including heat-shedding four-piston XT brakes
Heavier than comparable bikes
Requires extra strength for climbing
Rear suspension can be harsh on square-edged hits
Not the most agile bike due to long chainstays
10-speed 11-43t setup not ideal for a 170mm full-suspension bike
Feedback?
View all reviews
Jun 2024
With a handful of rides on the 2021 Spire, it is time to check in on the used bike build and a few first thoughts on the experience.
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
Oct 2021
We just got the new Transition Spire in for test. Let's take a quick look through the build and specs.
Oct 2021 · BHowell
This 170mm 29er defies the numbers for a lively, playful ride.
Rides like a smaller bike
Comfortable on the climbs
Lively trail manners
Spot-on build kit
Easy to get along with
Rides like a smaller bike
Rear suspension is harsh
Sep 2021 · Henry Quinney
With near-downhill bike geometry, does the Transition Spire limit itself to the gnarliest, steepest terrain, or is there more to it than meets the eye?
Super capable geometry
Very sensible spec
About as versatile as a 170mm 29" bike could ever hope to be
Confidence-inspiring ride didn't translate to all-out speed on our test track
Low bottom bracket requires short cranks to avoid pedal strikes
Jun 2021 · Beta
Something to a Spire to
Jun 2021 · Jessie-May Morgan
The Transition Spire is their longest travel trail bike yet, with an ultra slack head angle that is even slacker than the TR11 DH Bike!
Jun 2021 · Spencer Astra
Transition’s new sled, the Spire, is described by the Bellingham-based company as their “nimble bruiser”—an ultra-capable long-travel trail bike that prioritizes stability at high speeds and down steep terrain. Sporting 170 millimeters of travel front and rear, 29-inch wheels and a 63-degree headtube angle (in the high setting), the Spire seems to lean much further toward “bruiser” than “nimble,” though, after spending time aboard the huckleberry-colored bike, I found it to be surprisingly well-mannered and easy to scoot uphill. Braced with a Fox 38 Performance Elite fork featuring a GRIP2 damper and chunky Schwalbe tires, the Spire comes prepared for just about any gnarly trail you throw at it right out of the box and is clearly spec’d to provide plenty of impact absorption and grip on any surface. With such a stout build I thought the Spire would have a hard time lumbering up steep climbs, but I was pleased to find that, even with a massive wheelbase of 1287 millimeters and long 446-millimeter chainstays on the size large I tested, I was able to stay centered and comfortable during long uphill stretches. Remaining seated, I found, was the best course of action for winching up steep climbs and I never had to fuss with leaning forward to keep the front wheel planted. If you do happen to get out of the saddle, the Spire firms up nicely—a bit more anti-squat is present here than what I’ve felt on previous long-travel Transition bikes. The real hallmark for me in climbing aboard the Spire was being able to just relax in the saddle and let the supple suspension provide traction and a smooth ride. The party really starts when the Spire gets going downhill. This is a bike that never truly feels alive until you reach cruising speed and I quickly found that there’s no reason to hold back when crushing technical singletrack. A smaller bike would feel more manageable on tight twisty trails, but on the fast and wide-open trails of the Chuckanuts in Bellingham, the Spire felt right at home, especially when plowing through roots and chunder at full blast. The strong chassis of the Fox 38 fork coupled with a long wheelbase provides an immense sense of stability. The carbon frame itself offers an incredibly robust ride quality—muscling the bike through fast corners and bombing over successive square edge hits is a dampened dream. With its 446-millimeter chainstays, the Spire doesn’t feel like the most agile bike, though, at top speeds, it bestows so much confidence that slapping it around to test its limits feels natural and intuitive. Even with ample irresponsible line choices, things always seem to work out just fine.
| Frame | Spire Alloy Frameset Colors: Huckleberry (Carbon); Primer Gray (Carbon); Factory Orange (Alloy); Raw (Alloy) |
|---|---|
| Shock | Fox Float X2 Factory, 2 Position (205x65) Travel: 170mm |
| Headset | FSA NO.55R/57, (included) |
First added June 3
Last updated August 14
Not listed for 1,749 days