Velopedia Bicycle Archive

2026 Transition Spur Eagle 90

Original manufacturer specifications including 29" wheels, 27.1 lbs / 12.29 kg (Size MD) published weight, geometry for 8 published sizes.

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What Velopedia knows

Model year
2026
Category
Mountain
Original MSRP
$6,499.00
Sizes
S, M, L, XL
Colors
Nightshade, Frostberry
Weight
27.1 lbs / 12.29 kg (Size MD)
Geometry
8 manufacturer sizes · Geometry context
Record coverage
22 preserved details · 2 archived images · original MSRP · preserved geometry
Archive ID
900001558
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Manufacturer catalog

Published sizes and colors

4 sizes · 2 colors

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

NightshadeFrostberry

Frameset

Frame ConstructionSpur Carbon 120mm
Frame MaterialCarbon Fiber
ForkFox Float 34 SL Grip X Performance Elite(130mm)
Rear ShockFox Float SL Performance Elite(190x45mm)

Drivetrain

ShiftersSRAM Eagle 90 MMX
Rear DerailleurSRAM Eagle 90
CranksetSRAM Eagle 90 DUB(32t/165mm)
CassetteSRAM XS 1275 T-Type (10-52t)
ChainSRAM GX Eagle Transmission

Brakes

BrakesSRAM Motive Silver; Rotors: SRAM Centerline (180mm)

Cockpit & Contact Points

HeadsetFSA no.42/48/ACB
HandlebarRaceFace Turbine BarSM(760x20mm)MD(780x40mm)LG/XL(800x40mm)
StemRaceFace Aeffect R (40mm)
SaddleSDG Bel Air 3
SeatpostOneUp Dropper PostSM(150mm)MD(180mm)LG/XL(210mm)

Wheels & Tires

HubsDT Swiss 350 Spline Ratchet 54
RimsDT Swiss XR 1700 Spline
SpokesDT Swiss Competition Straightpull
Front TireMaxxis Forekaster 3C EXO+ (2.4)
Rear TireMaxxis Forekaster 3C EXO+ (2.4)
Wheel Size29"

Size-specific frame data

Geometry

8 sizes · 10 measurements

Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.

MeasurementSM · HighSM · LowMD · HighMD · LowLG · HighLG · LowXL · HighXL · Low
Seat tube360 mm360 mm390 mm390 mm430 mm430 mm460 mm460 mm
Effective top tube570 mm570 mm603 mm603 mm631 mm631 mm660 mm660 mm
Head tube100 mm100 mm110 mm110 mm120 mm120 mm135 mm135 mm
Head-tube angle66°65.5°66°65.5°66°65.5°66°65.5°
Chainstay / rear center434 mm436 mm434 mm436 mm439 mm441 mm439 mm441 mm
Wheelbase1163 mm1163 mm1197 mm1197 mm1231 mm1231 mm1262 mm1262 mm
Bottom-bracket drop40 mm47 mm40 mm47 mm40 mm47 mm40 mm47 mm
Reach430 mm425 mm460 mm455 mm485 mm480 mm510 mm505 mm
Stack608 mm612 mm617 mm621 mm626 mm630 mm640 mm644 mm
Standover height660 mm660 mm660 mm660 mm660 mm660 mm660 mm660 mm

Geometry source: Transition first-party SBG geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.

Geometry tools

Analyze a published size

Choose a size

The manufacturer publishes more than one geometry configuration. Velopedia analyzes each labeled state separately while treating them as one chassis in archive comparisons.

SM geometry

Configuration

Archive context: Its bottom-bracket drop of 40 mm sits somewhat deeper than typical. The head angle of 66° sits somewhat steeper than typical. Its wheelbase of 1163 mm sits close to the middle of the group.

Compared with 180 distinct mountain geometries in the Small-equivalent size cohort from model years 2024–2027 in the Velopedia archive.
Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze SM · High geometry

Parts & serviceability

Find replacement parts

3 top part searches
ChainMatching configuration
SRAM GX Eagle Transmission Interpreted as SRAM GX · 12-speed Component family — verify exact version
CassetteExact archived part
SRAM XS 1275 T-Type (10-52t) Named component · published drivetrain speed — verify exact version
Front tireOne check needed
Maxxis Forekaster 3C EXO+ (2.4) Named tire · verify the exact width Before ordering: Confirm the exact tire width before ordering.
More qualified parts (5)
Rear derailleurMatching configuration
SRAM Eagle 90 Interpreted as SRAM Eagle 90 · 12-speed Named component · published drivetrain speed — verify exact version
ShiftersQualified part search
SRAM Eagle 90 MMX Interpreted as SRAM Eagle 90 · 12-speed Named component · published drivetrain speed — verify exact version
HeadsetExact archived part
FSA no.42/48/ACB Exact archived model
RimsQualified part search
DT Swiss XR 1700 Spline Named archived component — verify dimensions
HubsQualified part search
DT Swiss 350 Spline Ratchet 54 Named archived component — verify dimensions

Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.

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Used-bike inspection

If you’re buying this bike used

Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.

Follow the full used-bike inspection order →
  • FrameInspect the frame in bright light, especially around the head tube, bottom bracket, chainstays and clamped areas. Look for cracks, ripples, crushed sections or signs of a previous impact.Inspect the frame and fork →
  • BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
  • SuspensionAsk when the fork and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for play.Evaluate the suspension →
  • DrivetrainShift through the full range under light load, measure chain wear and inspect the cassette or freewheel teeth. Skipping or hesitation can indicate wear, poor adjustment or mismatched parts.Check drivetrain wear →
  • Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
0 of 22 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2026 Transition Spur Eagle 90 · Mountain · Published sizes: S, M, L, XL

Archived: Frame: Spur Carbon 120mm · Fork: Fox Float 34 SL Grip X Performance Elite(130mm)

Archived: Fork: Fox Float 34 SL Grip X Performance Elite(130mm) · Rear shock: Fox Float SL Performance Elite(190x45mm)

Archived: Shifters: SRAM Eagle 90 MMX · Rear derailleur: SRAM Eagle 90 · Crankset: SRAM Eagle 90 DUB(32t/165mm) · Cassette: SRAM XS 1275 T-Type (10-52t) · Chain: SRAM GX Eagle Transmission

Archived: Brakes: SRAM Motive Silver; Rotors: SRAM Centerline (180mm)

Archived: Wheel size: 29" · Rims: DT Swiss XR 1700 Spline · Hubs: DT Swiss 350 Spline Ratchet 54 · Front tire: Maxxis Forekaster 3C EXO+ (2.4) · Rear tire: Maxxis Forekaster 3C EXO+ (2.4)

Controls and contact points

Archived: Headset: FSA No.42/48/ACB · Handlebar: RaceFace Turbine BarSM(760x20mm)MD(780x40mm)LG/XL(800x40mm) · Stem: RaceFace Aeffect R (40mm) · Seatpost: OneUp Dropper PostSM(150mm)MD(180mm)LG/XL(210mm) · Saddle: SDG Bel Air 3

Before and during the test ride

Follow the full used-bike inspection order →

Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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