AeroAddicts

Aurum · model family

Aurum Magma

2 variants by frame grade and generation. Compare them part by part below.

Generations

What changed from one generation to the next. Useful when you're weighing a used bike against a new one.

  1. 2024-05

    Magma V2

    V2 (2024)

    • Aero (NACA) profiles extended to the seat tube, seatpost and stays; deeper head tube and down tube
    • Wider fork stance; 35 mm tyre clearance
    • One-piece AURUM integrated bar with hidden cables
    • Claimed ~7 W (frame) + ~10 W (bar) saved at 45 km/h
    Source

Variants side by side

Each variant is shown with its first complete build. Pick other builds on the compare page.

Magma variants
Essentia (ECT-9)V2 (2024)
Overview
BrandAurumAurum
BuildESSENTIA Ultegra Di2 / Zipp 404 SMagma Ultegra Di2 / Scope R-series
Build notesAURUM's English page lists this build 'from €4,149 (tax excl.)'; the Spanish page shows €5,020.29, i.e. with 21% VAT, which is recorded here. The online configurator says the 2026 ESSENTIA range will be added soon, so no configured totals or other wheel options are priced yet. No power meter.AURUM lists the Ultegra parts by group name only, without model codes. No power meter. EUR price as AURUM's online configurator totals it (Spain selected), in any of the four standard colours; the KALEIDOS custom paint adds €550 and a second bottle and cage €47.
Price (MSRP)€5,020€5,020€5,020€8,299€8,299€8,299
Model year20262026
Generation—Magma V2 (2nd generation)
Launched—2024-05
DisciplineAero roadAero road
UCI legalNot statedYes
Verdict (out of 100)
Overall score7478
Aero7280
Frame7088
Components7682
Fit7284
Practicality6668
Price8765
Frame & fork
Frame materialCarbon (AURUM ECT-9 laminate, up to five types of carbon fibre around an EPS core)Carbon (AURUM ECT-10 laminate: six types of carbon fibre with a size-specific layup)
Fork materialCarbon (AURUM ESSENTIA ECT-9), 28.6 mm round steerer, asymmetric legsCarbon (AURUM ECT-10, wide-stance crown, standard 28.6 mm steerer)
Frame weight—780 g27.5 oz
Fork weight—375 g13.2 oz
Weight measured on—AURUM claim, size 54 (Cyclingnews quotes it as unpainted)
Frame sizes48, 51, 54, 56, 5848, 51, 54, 56, 58
Colours—Carbon Gloss, Red Team, Arctic White, Tenerife (complete bikes); KALEIDOS custom paint
Also available as—Magma Tenerife limited edition; the cheaper ESSENTIA in ECT-9 carbon with the same geometry
UCI frame approval—Approved 15 Feb 2024 as 'MAGMA V2' (frame and fork), sizes 48 - 58 (6), code AURUM-MG (UCI list version 2026.10.02); AURUM also states it is UCI approved
Compatibility & standards
Brake typeHydraulic disc, flat mountHydraulic disc, flat mount only
Wheel size700c700c
Max tire width30 mm35 mm
Bottom bracket standardBB386 EVO press-fitT47 threaded
Front axle12 mm thru-axle (AURUM CNC Stealth, 122 x 12)12 mm thru-axle (AURUM CNC 'stealth' ultralight)
Rear axle12 mm thru-axle (AURUM CNC Stealth, 163 x 12)12 mm thru-axle (AURUM CNC 'stealth' ultralight)
Drivetrain compatibilityElectronic groupsets onlyElectronic groupsets only
Mechanical shifting possibleNoNo
Cable routingFully internal (AURUM Head Tunnel)Fully internal through the AURUM integrated handlebar
Fit & adjustability
CockpitOne-piece AURUM carbon monocoque bar and stemOne-piece AURUM Integrated Handlebar (carbon monocoque) with hidden cable routing, in 15 sizes (38/40/42 cm widths, 90-130 mm stems)
Seatpost typeRound carbon 27.2 mm seatpost with an integrated clamp under a rubber capAURUM MAGMA aero carbon seatpost with hidden wedge clamp, 0 or 20 mm setback
Fit notes—The bar width (38/40/42 cm), stem length (90-130 mm), crank length and seatpost setback are chosen in the configurator. The bar comes with 5 and 10 mm stack spacers. The two smallest sizes have shorter seat tubes and the fork offset is 50 mm on sizes 48-51 and 44 mm on 54-58.
Aerodynamics
Manufacturer aero claimsAURUM lists aerodynamics among the frame's aims but publishes no figures for the ESSENTIAAbout 7 W saved at 45 km/h by the new frameset against the original Magma with the same size, wheels and parts, plus about 10 W from the integrated handlebar against a standard two-piece round bar and stem (AURUM CFD estimates)
Testing methodNone publishedCFD across -10 to 10 degrees of yaw during design; Cyclingnews reports the design was then checked in the University of Valencia wind tunnel
Tube profileNACA truncated aero profiles with a size-specific aero down tube; raised seat staysNACA 0024 profile for the head and down tubes, NACA 0021 for the fork, seat tube and seatpost, truncated trailing edges; high seat stays and a flattened top tube
Travel, maintenance & warranty
Headset bearingsTapered 1-1/8 in to 1-3/8 in, stainless-steel angular-contact bearingsTapered, angular stainless-steel bearings 1.5 in lower and 1-3/8 in upper
Derailleur hanger—UDH (SRAM Universal Derailleur Hanger)
Proprietary parts—AURUM integrated handlebar, MAGMA seatpost and hidden wedge clamp, AURUM thru-axles
Frame warranty—2 years on frame and fork, extended to lifetime when the frame serial number is registered on AURUM's website
Sold viaDirect online at aurumbikes.com and through AURUM dealersDirect online at aurumbikes.com and through AURUM dealers
Drivetrain
GroupsetShimano Ultegra Di2 R8100Shimano Ultegra Di2
Launched2021 · current generation—
Speeds12-speed12-speed
ElectronicYesYes
Drivetrain2x122x
ShiftersShimano Ultegra Di2 ST-R8170Shimano Ultegra Di2
CranksetShimano Ultegra R8100Shimano Ultegra Di2
Chainrings52/3652/36
Bottom bracketRotor PF4624CeramicSpeed T47
StandardBB386 EVO press-fitT47
Front derailleurShimano Ultegra Di2 R8150Shimano Ultegra Di2
Rear derailleurShimano Ultegra Di2 R8150Shimano Ultegra Di2
CassetteShimano Ultegra R8100Shimano Ultegra Di2
Range11-3011-30
Speeds12-speed12-speed
ChainShimano UltegraShimano Ultegra
Brakes
Brake calipersShimano Ultegra BR-R8170Shimano Ultegra Di2 hydraulic disc
TypeHydraulic discHydraulic disc
RotorsShimano UltegraShimano Ultegra
Front rotor160 mm160 mm
Rear rotor140 mm140 mm
Wheels & tires
WheelsetZipp 404 SScope R-series 4 / 6
MaterialCarbonCarbon
Notes—Choice of Scope R4 or R6 in the configurator
TiresVittoria Corsa N.EXT TLRVittoria Corsa Pro
Tire width28 mm28 mm
Notes—Tubeless ready
Cockpit
HandlebarAURUM Integrated HandlebarAURUM Integrated Handlebar
TypeOne-piece carbon monocoque bar and stemOne-piece carbon monocoque bar and stem
Integrated stemYesYes
Widths available—380, 400 or 420 mm at the hoods (395/415/435 mm at the drops) with 90-130 mm stems, chosen in the configurator
Bar reach—80 mm
Bar drop—125 mm
Flare—4°
Cable routing—Fully internal
MaterialCarbonCarbon
Weight—330 g11.6 oz
Notes—330 g for 400x110 mm including mounting hardware (AURUM's handlebar page); the Magma page quotes 320 g. Removable CNC mount for Garmin, Wahoo and GoPro.
Saddle & seatpost
SaddlePrologo Scratch M5 Pass TiroxPrologo Scratch M5 Nack
SeatpostAURUM Round carbon 27.2 mmAURUM MAGMA Carbon
Offset / setback—0 or 20 mm
MaterialCarbonCarbon
Weight—170 g6 oz
Bar tapeAURUM ExperienceAURUM Experience
Thickness3 mm3 mm
Included extras
Bottle cagesAURUM Carbon—
Geometry (smallest – largest size)
Sizes48, 51, 54, 56, 5848, 51, 54, 56, 58
Rider height min152–180 cm5′0″–5′11″152–180 cm5′0″–5′11″
Rider height max163–188 cm5′4″–6′2″163–188 cm5′4″–6′2″
Stack505–592 mm19.9–23.3″505–592 mm19.9–23.3″
Reach371–401 mm14.6–15.8″371–401 mm14.6–15.8″
Seat tube angle73.3–75°73.3–75°
Head tube angle71.8–73.2°71.8–73.2°
Head tube length103–189 mm4.1–7.4″103–189 mm4.1–7.4″
Effective top tube506–579 mm19.9–22.8″506–579 mm19.9–22.8″
Seat tube length435–549 mm17.1–21.6″435–549 mm17.1–21.6″
Chainstay408–410 mm16.1–16.1″408–410 mm16.1–16.1″
Wheelbase967–1,008 mm38.1–39.7″967–1,008 mm38.1–39.7″
BB drop71–74 mm2.8–2.9″71–74 mm2.8–2.9″
Fork length370 mm14.6″370 mm14.6″
Fork offset44–50 mm1.7–2″44–50 mm1.7–2″
Trail58–60 mm2.3–2.4″58–60 mm2.3–2.4″
Front centre570–608 mm22.4–23.9″570–608 mm22.4–23.9″
Standover721–826 mm28.4–32.5″721–826 mm28.4–32.5″
Wheel size700c700c
Handlebar reach80 mm3.1″80 mm3.1″
Handlebar drop125 mm4.9″125 mm4.9″

Geometry overlay

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Drawn to scale (how to read it).

Essentia (ECT-9) · 54V2 (2024) · 54