Gewicht 11.7kg
Buizen frame Carbon SL HMF
Afmetingen 27.5": 16" | 29": 18", 20", 22"
Kleuren Olive Green


op verzoek

How do I get to my first Marathon Start?

STEVENS' entry into the 29" marathon category weighs in at just over 11kg (24lbs 4oz). From its top level carbon frame to the reliable specs including Shimano drivetrain and brakes, RockShox suspension fork with tapered steerer and thru-axle, and Oxygen-Scorpo cockpit, the Sonora shows no weaknesses.

  • Carbon hardtail with first-class handling
  • High-quality frame details: internal cable routing, pressfit, direct mount ...
  • Responsive RockShox Recon Silver RL suspension fork w/ lockout remote control
  • Reliable Shimano Deore XT/SLX 2x11-speed drivetrain
  • DT Swiss wheels wight boost axle standard (16" version: 27.5")


Boost-Standard Fork

What is right for the rear wheel is even more important at the front wheel - because steering precision matters. This is why STEVENS uses suspension forks and hubs with extra wide axle spacing for all its 29er fullies, the Whaka+ ES and the trail rocket Sonora SL. These 110mm of axle spacing are called "Boost" or "Plus" and stand for lots of added lateral stiffness plus space for extra wide studded tires.

Boost-Standard am Hinterbau

Seit dem Modelljahr 2016 entsprechen die Hinterbauten aller STEVENS-Fullys dem neuen „Boost“- oder „Plus“-Achsmaß mit 148 mm Einbaubreite – und das hat gute Gründe: Die Seitensteifigkeit des Hinterrades erhöht sich um ca. 20%, wovon vor allem die großen 29er-Laufräder profitieren. Und es wird Platz geschaffen für voluminöse Stollenreifen, die auf dem Trail mit besserer Performance und mehr Fahrspaß punkten.

Double Chamber Technology

In order to better handle the applied loads, frame main tubes and fork legs are devided into two chambers by an inner reinforcement rib. Riders of the top road bike model Ventoux and carbon MTB hardtail Sonora will benefit from this feature.

Side Swing front derailleur

Side Swing Umwerfer
Side Swing front derailleur

Our top supplier Shimano made a great innovation here. One that works reliably on any terrain when changing gears at the front has to be fast and precise - be it in competitions or on technical trails. Thanks to its upright axes the front derailleur cage swings outward and forward at the same time, and due to its direct actuation from the downtube only needs minimum operating force.

High Modulus Carbon Fibers

Only the very best materials are used for the highest quality STEVENS carbon frames - so called high modulus carbon fibres. They offer a perfect combination of maximum toughness and elasticity. This way they provide maximum lateral stiffness for best forward drive and a high amount of comfort. Result: incredibly light and enormously stiff frames.

Versatile cable routing

We keep the cable routing on our bikes as versatile as possible so you can ride your bike like you want to. There are wide and therefore easy to reach cable ports in the frame to insert either one or two cables or none at all - there are cover plugs for any of these configurations. This is also very convenient for retrofitting a dropper post.


Elektronische Schaltungen haben sich am Rennrad und am Mountainbike neben den klassischen mechanischen Schaltungen längst etabliert. Bestechend schnelle und zuverlässige Gangwechsel bei minimalem Wartungsaufwand machen sich eben nicht nur bei der Tour de France oder im Cyclocross-Worldcup oder auf den Cross Country-Weltcup-Strecken bezahlt. Und genau darum sind viele Rennrad- und Mountainbikerahmen von STEVENS bereits „Di2-ready“ – sprich: für die nahtlose Integration von Akkus und Kabeln (anstelle der herkömmlichen Seilzüge) vorbereitet. Und selbst für seine edle Alfine-Nabenschaltung bietet Shimano eine Elektronik-Version an.

Tapered Steerer / Tapered Headtube

Fork shaft (or steerer tube) and head tube are tapered, meaning their diameter increases from top to bottom resulting in a conical shape. The diameter needs to be bigger at the bottom since this is where higher stress is applied - especially when the bike has a higher total weight due to luggage or an e-drive and battery. Also tapered steerers feature a smoother force transfer (like forces caused by hard braking) to the downtube than forks with a continuous 1 1/8" diameter.

QR15-Steckachse vorn

Die „15“ steht für den Achsdurchmesser, das „QR“ für „Quick Release“, also Schnellspanner – und zusammen für die funktionellste Methode, das Vorderrad in der (Feder-)Gabel zu verankern. Die Vorteile sind bestechend: hohe Steifigkeit, präzise Bremsscheiben-Positionierung und kinderleichte Bedienung. Also stattet STEVENS fast alle Mountainbikes und sogar die hochwertigsten Trekking-, Crossbikes und Pedelecs damit aus. Vor allem bei den 29“-MTBs wird sogar noch die Einbaubreite erhöht – von 100 auf 110 mm, das ist noch steifer.

E-thru Rear Axle

This abbreviation stands for Shimano's thru-axle standard for MTB rear stays that integrates a thread into the dropout. On the majority of STEVENS mountain bikes a 12mm thru axle provides outstanding rear triangle stiffness and utmost precision in brake disc alignement to prevent annoying brake rub.


  • einfach
  • erweitert


Buizen frame
Carbon SL HMF
  • Double Chamber Technology
  • Axle: QR12x148
  • Brake: postmount disc 160
  • BB: Pressfit 92
  • Front derailleur mount: direct mount (high)
  • Cable routing: intern
RockShox Recon Silver
  • Travel: 100mm
  • Air suspension
  • Remote Lockout
  • Tapered Steerer 1 1/8" - 1 1/2"
  • Axle: QR15x100
  • Brake: postmount disc 6"
STEVENS MTB Taper 1 1/8" - 1 1/2"
  • Upper bearing cup: IS42/28.6
  • Lower bearing cup: IS52/40
Shimano Deore
  • BR-M615
  • Hydraulic disc brake
  • Rotor: SM-RT56
  • Rotor size: 180/160mm
  • IS / 6-bolt
  • 2 finger


Shimano SLX
  • FC-M7000, 36-26 T
  • BB type: Pressfit 92 / Hollowtech II
Versnelling v
Shimano SLX
  • FD-M7020-11D6
  • Side-Swing
Shimano CN-HG601
Versnelling h
Shimano Deore XT Shadow+
  • RD-M8000-DGS
  • 11-speed
  • Direct Mount
  • Total capacity: 39 T
Shimano SLX
  • CS-M7000
  • 11-speed
  • Combination: 11-13-15-17-19-21-24-27-31-35-40 T
Zoom 1.54 - 7.98 m, 2*10

Wiel set

Systeem wiel
DT Swiss Mountain Classic
Continental X-King Performance
  • Tire size: 55-584 | 622
  • Foldable
  • PureGrip compound


Oxygen Scorpo
  • Width: 700mm
  • Backsweep: 11°
  • Rise: 20mm
  • Clamp: 31.8mm
Oxygen Scorpo
  • Handlebar clamp: 31.8mm
  • Angle: 6°
Oxygen Spark
Oxygen Scorpo
  • Length: 380mm
  • Diameter: 27.2mm
  • Insertion depth min. 100mm
Schakel hendel
Shimano SLX
  • SL-M7000
Rem hendel
Shimano Deore
  • BL-M615
  • 2 finger


27.5": 16" | 29": 18", 20", 22"
Olive Green
Laden weight
  • Bike incl. rider, clothing and luggage

Test reportages

Logo O2-Bikers: Wendiger Kletterer

O2-Bikers: Wendiger Kletterer


The Sonora allows to take switchback curves the shortest possible way. No turn is too tight no matter how hard you are pedalling, the stiff carbon frame takes you where you want to go. These properties also make the Sonora a good climber.
Logo O2 Bikers

O2 Bikers


Light frame, beautiful finish. The Sonora is an excellent bike in every aspect. Geometry and handling were to all test riders' liking, sensational price.


schematische Skizze eines Fahrrades mit eingezeichneten Geometrie-Messpunkten

Frame maat (")   16 18 20 22 Meet methode
Wheelsize (") 27.5 29 29 29  
Lengte zadelkolom A1 605 627 642 652 nominaal
Lengte zadelkolom A2 376 427 478 510 hart trap-kogellager tot bovenzijde zadelkolom
Lengte zadelkolom A3 341 388 440 470 hart trapkogellager tot bovenzijde bovenstang
Lengte bovenstang B 584 584 598 617  
Bovenstang horizontaal C 595 600 620 640 tot snijpunt zadelsteun
Hoek stuurkolom (°) D 69 70 70 70  
Hoek zadelkolom (°) E 74.5 74.5 74.5 74.5  
Wielbasis F 1106 1108 1123 1144  
Lengte kettingboog G 425 435 435 435  
Lengte stuurkolom H 95 95 110 120  
Diepte verzonken traplager I 53 70 70 70 Afstand tot naafhoogte
Hoogte traplager K 301 301 301 301 Afstand tot bodem
Vork voorvorming L 44 43 43 43  
Hellend M 254 227 193 171 Bovenstang level verschil v/h
Radius buitenband N 354 371 371 371 incl. banden
Vrije hoogte O 714 755 787 811 Bovenzijde bovenstang tot bodem*
Hoogte voorvork P 490 490 490 490 incl. de onderste stuurset-ring
Afstand voorwiel - traplager Q 686 676 697 718  
Reach R 433 432 448 466 center bottom bracket to center headtube, horizontal
Stack S 583 605 619 628 center bottom bracket to center headtube, vertical
Stack/Reach (1:x)   1.35 1.4 1.38 1.35 ratio stack to reach
Zadelsteun Ø   27.2 27.2 27.2 27.2  
Voorbouw lengte   60 75 90 100 hart op hart
Hoek voorbouw (°)   6 6 6 6  
Stuur klemring   31.8 31.8 31.8 31.8  
Spacer pakket   8.3 + 5 + 5 + 5 + 5  
Breedte stuur   760 760 760 760  
Kruk lengte   170 175 175 175  
    16 18 20 22  

* 1/3 van zadel kolom verwijderd