Sonora ES Generation 1

Weight 10.8 kg
Frame Carbon SL HMF
Sizes 29" - 16", 18", 20", 22"
Color Silver Black

Pricing

recomm. retail price
2 949.00 €

This is what you get …

… when STEVENS puts a racer for ambitious marathon riders on the big 29er wheels: A top-class carbon monocoque frame. Components that can easily cope with a long racing season - from Shimano's Deore XT 1x12-speed drivetrain and Ice-Tech brakes to the elegant DT Swiss system wheels. Or in short: the Sonora ES.

  • Carbon hardtail with first-class frame details and World Cup worthy handling
  • Lightweight Fox 32 Float Step Cast suspension fork w/ lockout remote control
  • Proven DT Swiss X 1900 wheelset
  • Complete Shimano Deore XT 1x12-spd groupset
  • 740 mm handlebar width for maximum control

Specifications

Details

Illustration may differ. Specification subject to change.

Chassis

Frame
Carbon SL HMF
  • O.L.D.: 148 mm
  • Brake: postmount disc 6"
  • BB: Pressfit BB92
  • Cable routing: internal
  • Cable routing: internal
Fork
Fox 32 Float SC Performance
  • Step Cast technology
  • Travel: 100 mm
  • Air suspension
  • Remote Lockout
  • Tapered Steerer 1 1/8" - 1.5"
  • O.L.D.: 110 mm
  • Brake: postmount disc 6"
Headset
STEVENS MTB Taper 1 1/8"-1 1/2"
  • Upper bearing cup: IS42/28.6
  • Lower bearing cup: IS52/40
Brake front
Shimano Deore XT
  • BR-M8100
  • Hydraulic disc brake
Brake rear
Shimano Deore XT
  • BR-M8100
  • Hydraulic disc brake
Brake disc front
Shimano RT-MT800
  • Rotor size: 180 mm
  • Center-Lock
Brake disc rear
Shimano RT-MT800
  • Rotor size: 160 mm
  • Center-Lock

Drivetrain

Crankset
Shimano Deore XT
  • FC-M8100-1
  • 34 T
  • BB type: Pressfit BB92 / Hollowtech II
  • Boost chain line
Derailleur rear
Shimano Deore XT Shadow+
  • RD-M8100-SGS
  • 12-speed
  • Total capacity: 41 T
Chain
Shimano CN-M8100
Cassette
Shimano Deore XT
  • CS-M8100-12
  • 12-speed
  • Combination: 10-12-14-16-18-21-24-28-33-39-45-51 T

Wheelset

System wheel front
DT Swiss X 1900 Spline
  • Axle: QR15x110 mm
System wheel rear
DT Swiss X 1900 Spline
  • Axle: QR12x148 mm
Tire front
Schwalbe Racing Ray Evolution
  • Tire size: 57-622
  • Foldable
  • ADDIX Speed compound
  • LiteSkin
  • Tubeless Easy
Tire rear
Schwalbe Racing Ralph Evolution
  • Tire size: 57-622
  • Foldable
  • ADDIX Speed compound
  • LiteSkin
  • Tubeless Easy
Tubes
Schwalbe Aerothan
  • SV19E
  • 54/62-622
  • Valve-length 40 mm

Cockpit

Handlebar
Oxygen Scorpo MTB
  • Width: 700 mm
  • Backsweep: 9°
  • Rise: 15 mm
  • Clamp: 31.8 mm
Stem
Oxygen Scorpo MTB
  • Handlebar clamp: 31.8 mm
  • Angle: 5°
Saddle
Oxygen Roccia
Seatpost
Oxygen Scorpo MTB
  • Length: 380 mm
  • Diameter: 30.9 mm
  • Insertion depth: min. 100 mm
Shift lever right
Shimano Deore XT
  • SL-M8100
  • 12-speed
Brake lever
Shimano Deore XT
  • BL-M8100
  • 2 finger

Data

Weight
10.8 kg
Laden weight
115 kg
Color(s)
Silver Black
Sizes
29" - 16", 18", 20", 22"
 

Technology

QR15 thru axle

QR15 thru axle

The most functional method of anchoring the front wheel in the (suspension) fork.

Read more …
E-thru rear axle

E-thru rear axle

Shimano thru-axle standard for rear triangle stiffness and precise positioning of the brake disc.

Read more …

QR15 thru axle

QR15 thru axle

The "15" stands for the axle diameter, the "QR" for "Quick Release" – and together for the most functional method of anchoring the front wheel in the (suspension) fork. The advantages are impressive: high rigidity, precise brake disc positioning and foolproof operation. STEVENS therefore equips all mountain bikes and E-MTBs as well as the highest quality trekking bikes, cross bikes and E-bikes with them. For (E-)MTBs in particular, the installation width has even been increased – from 100 to 110 mm, which is even stiffer.

E-thru rear axle

E-thru rear axle

This abbreviation stands for Shimano’s thru-axle standard for rear triangles, in which the threaded nut is integrated directly into the dropout. The 12 mm axle ensures outstanding rear triangle stiffness and absolutely precise positioning of the brake disc – this avoids annoying grinding noises.

Geometry

schematische Skizze eines Fahrrades mit eingezeichneten Geometrie-Messpunkten

The online size guide does not replace advice from a specialist retailer. It serves as an initial orientation and may differ from personal preferences. A test ride offers the best comparison.

Frame height (")   16 18 20 22 Measuring mode
Seattube length A1 630 635 651 661 nominal
Seattube length A2 399 445 483 523 bottom bracket to top of seattube
Seattube length A3 347 393 432 472 bottom bracket to top of top tube
Top tube length B 558 574 596 619
Top tube horizontal C 575 600 625 650 center headtube to center seatpost/seattube
Headtube angle (°) D 69,5 69,5 69,5 69,5
Seattube angle (°) E 73,7 73,7 73,7 73,7
Wheelbase F 1087 1113 1139 1165
Chainstay length G 435 435 435 435
Headtube length H 95 100 115 125
Bottom bracket drop I 60 60 60 60 distance of bottom bracket to hub level*
Bottom bracket height K 310 310 310 310 distance to ground*
Fork rake L 51 51 51 51
Slope M 255 216 191 164 top tube level distance front to rear
Wheel radius front N1 372 372 372 372 tyred
Wheel radius rear N2 372 372 372 372 tyred
Standover height O 747 779 806 835 top of top tube to ground**
Top tube height O1 376 408 435 464 standover height minus bottom bracket height
Fork build height P 506 506 506 506 incl. lower headset cups*
Front wheel - bottom bracket Q 659 684 710 736
Reach R 398 421 442 465 center bottom bracket to center headtube, horizontal
Stack S 605 610 625 635 center bottom bracket to center headtube, vertical
Stack/Reach (1:x)   1,52 1,45 1,41 1,37 ratio stack to reach
Seatpost diameter   30,9 30,9 30,9 30,9
Stem length   70 80 90 100 center-center
Stem angle (°)   5 5 5 5
Handlebar diameter   31,8 31,8 31,8 31,8
Assembled spacers   8,3 + 3*5 + 10
Handlebar width   740 740 740 740
Cranklength   170 175 175 175
    16 18 20 22  

* Values measured with rider on board and slightly compressed front fork / rearshock (regular riding position)

** measured 100 mm ahead of bottom bracket, fork and rearshock not compressed (static)