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2025 Transition

Spur Carbon Eagle 90

A 29″ carbon frame full suspension trail bike with ultra high-end components.
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Manufacturer Price

$4,999$6,499
FrameCarbon
SuspensionFull, 120 / 120mm
ForkFox Performance Elite Float 34
ShockFox Float DPS Performance Elite
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetEagle 90 Transmission
BrakesSRAM Hydraulic Disc
SeatpostDropper
View on transitionbikes.comLearn about Transition
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Spur Carbon Eagle 90
Other Trail bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

Spur Carbon Eagle 90

26 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Spur model range

View Comparison
Sizing
SM

5'0" – 5'7"

MD

5'4" – 6'0"

LG

5'8" – 6'3"

XL

6'0" – 6'7"

🐐 Estimated

Rider Fit Notes

None yet.

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Reviews

Summary

The Transition Spur is a highly versatile trail bike that excels in both climbing and descending, offering a lightweight, playful ride with a full carbon fiber frame and lifetime warranty. Its geometry and suspension design provide a confident and efficient ride, blurring the lines between XC and trail capabilities. While it may require cautious line choice in rougher sections, its performance and reliability make it a standout choice for riders seeking a well-rounded bike.

Pros
  • Capable and efficient shorter-travel bike

  • Blurs the lines between XC and trail

  • Reliable companion for all-terrain riding

  • Lightweight, under 30 pounds

  • Steep seat angle and balanced geometry for effective climbing

Cons
  • Lower shock bolt being slightly loose

  • Small travel numbers may be a negative for larger riders

  • Requires cautious line choice in rowdier sections

  • SRAM’s G2 brake levers rattle over rough terrain

Key Quotes
The Spur has been a reliable companion.
BIKE Magazine logoBIKE Magazine
The Spur sparks confidence in a similar way trail bikes do, but in a more svelte package.
Mountain Bike Action logoMountain Bike Action
It's one of the most well-rounded bikes I've been on in a while.
BIKE Magazine logoBIKE Magazine

Feedback?

View all reviews

Loam Wolf
Review: Transition Spur V2

Mar 2026 · Cole Gregg

This Transition Spur V2 finds it a more confident and capable short-travel trail bike without losing an ounce of the pep. See how it rides.

Highs
  • Climbing prowess retained from original

  • Composed and confident descending despite 120mm travel

  • Poppy, playful, and balanced feel

  • High rear suspension progression for controlled big hits

  • Intuitive jumping

  • Well-finished frame with rattle-free internal routing

  • Boom Box storage

  • Lifetime warranty on frame

  • Ample seatpost insertion allowing long dropper

  • Weight only increased 0.2 lb from previous model

Lows
  • Not the plushest short-travel bike

  • Forward riding position on flatter climbs puts pressure on hands

  • Limited traction on loose, ultra-steep grinds

  • Limited side knobs on Forekaster tires require learning for hard corners

  • Shimano XT Di2 derailleur noise on big hits

Read Review

Pinkbike
Review: The New Transition Spur is Lightly Revised and Still Just as Fun

Mar 2026 · Mike Kazimer

In-frame storage, adjustable geometry, and a shorter seat tube are a few of the key updates.

Highs
  • Hits the mark when it comes to overall handling.

  • Short stems, higher rise bars, and longer dropper posts are great to see on a 120mm bike.

Lows
  • The frame weight's reasonable, but gram counters may want something even lighter.

  • Even the base model is on the pricier side of things.

Read Review

BIKE Magazine
Tested: Transition Spur

Jan 2025

Why you shouldn't overlook this capable and genre-bending short-travel mountain bike.

Read Review

Mountain Bike Action
LONG TERM REVIEW: TRANSITION SPUR - MINIMIZED EFFORT FOR MAXIMUM TRAIL EXPERIENCE - Mountain Bike Action Magazine

Dec 2024 · Ron Koch

Transition’s lightness, both in feel and on the scales, makes for a bike that can be pedaled farther and pointed down gnarly lines with fresh legs, thanks to the overall efficiency.

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Singletracks
2024 Transition Spur Test Ride Review

Mar 2024 · Tim Wild

A Sedona hot lap on the new Transition Spur suggests this is a bike that can punch above its weight.

Highs
  • Incredibly light

  • Playful geometry

  • Lifetime frame warranty

Lows
  • Limited colorways

  • Some might like more adjustability on the fame

Read Review

Geometry
Specs
Build
Frame

Spur Carbon 120mm (UDH)

BB StandardBSA, 73mm, Threaded

Hanger StandardUDH

Tire Clearance2.4"

ColorsHazy Grey; Blackberry

Fork

Fox Float 34 Performance Elite Grip X, (120mm)

Travel120mm

Spring TypeAir

Shock

Fox DPS Performance Elite, (190x45mm)

Travel120mm

Bottom Bracket

73mm BSA Threaded

Headset

FSA No.57E

Stem

ANVL Swage (40mm)

Handlebar

ANVL Mandrel Alloy 35, SM/MD (800x20mm), LG/XL (800x30mm)

Saddle

SDG Bel Air 3

Seatpost

OneUp Dropper Post, SM (150mm), MD (180mm), LG (210mm), XL (240mm)

TypeDropper

Grips

ODI Elite Flow Lock-On

Groupset
Rear Derailleur

SRAM Eagle 90

Crank

SRAM Eagle 90 DUB, (32t/170mm)

Shifters

SRAM Eagle 90 MMX

Cassette

SRAM XS 1275 (10-52t)

Chain

SRAM GX Eagle Transmission

Brakes

SRAM Motive Bronze

TypeSRAM Hydraulic Disc

Wheels
Rims

DT Swiss M 1900 Spline 30

Spokes

DT Swiss Champion

Front Hub

DT Swiss 370 Ratchet LN

Rear Hub

DT Swiss 370 Ratchet LN

Tires

Front: Maxxis Dissector 3C EXO (2.4), Rear: Maxxis Rekon 3C EXO (2.4)

Disc Rotors

SRAM Centerline (180mm)

Rider Notes
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First added July 12

Last updated February 21

Not listed for 111 days