AURUM Magma Disc Road Complete Bike (SRAM/Zipp Kit)
AURUM's first model, Magma, is the ultimate racing road bike. It is the best performer on any road terrain, the one to be chosen no matter what the route profile and conditions. It is faster everywhere. Magma is the bike that Contador and Basso wish they had had throughout their careers. Born from experience, it’s a project that has kept them busy since they retired from professional racing.
Magma is agile, light and fast. But from the outset Contador and Basso agreed that it must be balanced in its handling: comfortable and compliant enough for long rides, yet stiff while climbing off-the-saddle. Reactive at its front end when cornering to track every tight corner with precision, yet stable to inspire confidence on even the fastest open descents.
Alberto Contador : This very special frameset has been the focus of our efforts for such a long time. It’s something that we’re both truly personally invested in – we’ve spent so many hours riding it, fine-tuning it and thinking about how to make it better than all the sensational bikes we rode during our careers.
Creating the fastest high-performance road bike on the market is a balancing act between different riding characteristics:
- STIFFNESS: For power delivery and quick, confident handling and cornering
- COMFORT: For long rides and ensuring that the rider can always get the best out of him/herself
- AERODYNAMICS: Reducing aero drag for the best efficiency and pure speed
For a lively feel and to save energy, without compromising stiffness and comfort
To achieve a bike that fulfills all this demanding criteria of perfectly balanced performance, Magma’s frame geometry is key, the soul of the frame.
Special attention was paid to keep the Magma’s soul consistent throughout the size range, and let every rider, regardless of his/her height, experience the same handling. Alberto and Ivan dreamt for years to design a bike’s frame geometry based on their experience, and it was paramount that all the frame sizes would handle that way. To achieve that, the Trail figure (the combination of the head tube angle and fork offset) was the starting point. Through experience and ride testing (with different test forks and wheel sizes) the AURUM team set an ideal Trail dimension, for the best balance of quick steering but also stability at high speed. Often small frame sizes get a compromised handling, with a long Trail that makes turning slow and unlively. AURUM Magma uses two different fork offsets depending on the frame size, which combined with the proper head tube angle results in a Trail that is always lively and fun as intended, also for the smaller frame sizes.
Stack and reach will put you in a race position for out-and-out performance, yet allow comfort for a long ride. Short, oversized chainstays contribute to a climber’s configuration, while a low bottom bracket height helps achieve an assured center of gravity coupled with a generous wheelbase that delivers a reassuring stability, however fast your descent.
Alberto Contador and Ivan Basso know as well as anybody that to perform at your best, the wattage you generate needs to be delivered to the road with maximum efficiency: a frame being stiff in the right places is crucial.
Magma is designed with high lateral stiffness at the bottom bracket area when you’re riding out of the saddle, at maximum effort, high speed or attacking a climb. It’s also made with high torsional stiffness particularly in the headtube and downtube sections – the backbone of the frame – crucial for a frameset that delivers confident handling and cornering.
Using a BB386Evo standard bottom bracket, Magma’s airfoil downtube tapers out from the headtube, maximizing torsional stiffness. The dimensions of the downtube on all frame sizes have been scaled individually for a proportionate stiffness level, so you’ll find consistent riding characteristics.
While the stiffness of key sections of Magma’s frameset are optimised for power delivery and sure handling – both in terms of geometry and details of the carbon layup – other areas are designed and tuned differently, to ensure the right level of comfort in an all-round performance bike. Riding position and frameset flexibility in the right areas are crucial for performing at your best over a long ride.
An important and non-debatable goal set by Contador and Basso from the beginning of the project was to work in depth in the aerodynamic efficiency of the Magma. Aerodynamics are very important in how Magma performs at speed and remains stable at different yaw angles. Traditional racing bikes have been split between Light or Aerodynamic, but it was essential to combine these two characteristics and make the Magma a faster bike.
Achieving a low weight was an important goal for the Magma project, however it was not to be the main focus of the development, but to have balanced overall riding characteristics. Often reaching for the last grams can result in a loss of structural strength or riding comfort.
At same time, too much focus on the weight figures could result in a not so aerodynamically optimized shaping, which after all contributes to higher speed in most riding situations.
AURUM Magma ECT frameset (Experience Carbon Technology)
CFD optimized aero fork and front triangle
FEA optimized frame tube dimensions and shape for every size
Internal cable routing, standard 28.6mm fork steerer tube
Tapered 1-1/8” to 1-3/8” headset
Electronic and mechanical drivetrain compatible
6 frame sizes: 50, 52, 54, 56, 58, 61
UCI approved, ISO-4210 safety standard approved
BB386Evo bottom bracket
Tapered headset with stainless steel angular bearings
27.2mm round seat post with custom hidden wedge
12mm stealth ultralight thru-axles
Flat mount disc brake only
Stem: Zipp SL Speed
Handlebars: Zipp SL 70 Ergo
Seatpost: Zipp SL Speed 20mm Offset
Saddle: Prologo Scratch M5 Nack Hard Black
Bartape: AURUM Experience 3mm
Wheels: Zipp 303 NSW Tubeless Disc
Tires: Schwalbe Pro One Evo 25mm clincher
Crankset: SRAM Red AXS Power Meter, 48/35t
Rear Derailleur: SRAM Red Etap AXS, 12-speed
Front Derailleur: SRAM Red Etap AXS
Cassette: SRAM Red XG-1290, 12-speed, 10-33t
Chain: SRAM Red 12-speed
Brakes: SRAM Red eTap AXS, Hydraulic Disc
Brakes rotors: SRAM Centerline XR 160mm front, 140mm rear
Mfr Claimed Weight
805g (54cm frame only)
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