E-8X

Weight 20.5 kg
Sizes  46, 50, 54 cm
Frame Aluminium 6061 TB
Color(s) Meteor Grey

Pricing

recomm. retail price
3 459.00 €

Fit For Fun.

Even some motorbikes don't have as much torque (75Nm) as the powerful Bosch Performance Line CX motor (4th generation!). Prestigious shift and brake components like these are usually found on high-quality mountain bikes. But its true potential is brought forward by the STEVENS add-ons - mainly the new frame with super-low (and perfectly protected) battery placement and sporty-but-comfortable seating position.

  • Sportive E-cross bike with low center of gravity
  • Bosch G4 Performance Line CX Cruise system w/ 75 Nm torque and 500 Wh battery
  • Shimano Deore XT: 12-speed gears plus hydraulic disc brakes
  • Innovative Bosch Kiox display
  • Fast & grippy Continental Double Fighter III tires

Technology

500 Wh Battery

This will decide success or failure of e-mobility. That's why STEVENS uses batteries with a huge 500 Watt-hour capacity in all its top-notch pedelecs for up to 215 km of range (according to the manufacturer, please refer to the Bosch range calculator for more exact results). This is possible even without a weight penalty: Compared to the old PowerPack 400, the new Bosch PowerPack 500 is just 100 grams heavier. This huge "fuel tank" is our premier recommendation for pedelec riders who don't shy away from the hilliest of itineraries.

QR15 Front Thru-Axle

"15" stands for the diameter in millimeters, "QR" for quick release. Combined they are the most useful method to fix the front wheel to the (suspension) fork. With convincing advantages: high stiffness, precise positioning of the brake disc and super-easy handling. So STEVENS specs almost all its mountain bikes and even high-quality trekking bikes, cross bikes and pedelecs with a thru-axle. Additionally, especially with 29" MTBs axle spacing is increased from 100 to 110 mm which makes the design even stiffer.

Bosch Kiox-Display

Bosch Kiox-Display

The innovative Kiox display is attached to the stem with a user friendly magnetic holder. It provides ambitious e-bike riders with all kinds of interesting information like self-generated power and heart rate (with optional Bluetooth heart rate chest belt).

Semi-integrated battery

Semi-integrated battery

This is what successful integration looks like: A Bosch PowerPack battery is concealed under this matt black cover, which is harmoniously adapted to the shape of the frame - optimally protected from the weather and cold, so it is clean and dry and can be easily recharged in the office or home, even after riding in the rain.

Bosch G4 Performance Line CX Cruise

Bosch G4 Performance Line CX Cruise engine

Smaller, lighter, more powerful - there is no way around the new Bosch G4 (for 4th generation) Performance Line CX for high-end e-bikes. It supports its riders with a maximum of 340 % of their own pedal force and brings 75 Newton meters of torque into play. The engine power is dosed particularly smoothly in the so-called "E-MTB" mode, when the respective optimum support level is automatically engaged, because the fine sensors read the rider's request from the soles of his or her feet.

Hydroforming

Using water pressure aluminium tubes are transformed from their original round shape into their ideal shape determined by STEVENS engineers and designers.

Speed sensor integrated in the dropout

Speed sensor integrated in the dropout

This view is only available when the rear wheel is removed - otherwise the sensor, which gives the e-bike drive system the decisive information about the current speed, is perfectly integrated and well protected in the rear left dropout. The not so rare error that the incorrectly positioned spoke magnet slows down the motor support is thus combated very effectively.

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.

Triple Butted, Double Butted

Meaning a frame tube has three or two different wall thicknesses along its length. Triple butted (TB) is the usual technology with STEVENS high-quality frames.
Tubes with different wall thicknesses are optimally adjusted to certain ways of manufacturing or to withstand specific loads. Where the highest loads occur or where tubes are welded, walls are the thickest. Butted tubes allow frame weight to be lower by several hundred grams.

Hydraulic Disc Brakes (Trekking)

There is no brake system more reliable than hydraulic disc brakes - that is why we strongly advice everyone, who is riding their bike (nearly) 12 months a year to choose one of our models with a disc brake. Brake power is easy to modulate and does not fade a bit in the wet. Also the brakes are almost maintenance-free. And your local STEVENS dealer will gladly explain to you what you need to take care of when removing and re-installing a wheel.

E-thru Rear Axle

E-thru Rear Axle at E-Cayolle

This abbreviation stands for Shimano's thru-axle standard for rear stays that integrates a thread into the dropout. As a result, the 12mm thru axle provides outstanding rear triangle stiffness and utmost precision in brake disc alignement to prevent annoying brake rub.

Equipment

Details

Chassis

Frame
Aluminium 6061 TB
  • O.L.D.: 142 mm
  • Brake: postmount disc 7"
  • BB: Bosch
  • Cable routing: internal
  • Fender + rack mounts
Front fork
SR Suntour NRX-E LOR Air
  • Travel: 63 mm
  • Air suspension
  • Lockout
  • Tapered Steerer 1 1/8" - 1 1/2"
  • O.L.D.: 100 mm
  • Brake: postmount disc 6"
Headset
STEVENS AH Taper 1 1/8"-1 1/2"
  • Upper bearing cup: ZS44/28.6
  • Lower bearing cup: ZS55/40
Brakes
Shimano Deore XT
  • BR-M8000
  • Hydraulic disc brake
  • Rotor: SM-RT64
  • Rotor size: 180/180 mm
  • Center-Lock

Drivetrain

Crankset
Oxygen E-Scorpo
  • 38 T
  • BB type: Bosch / ISIS
  • Chainguard
Derailleur r
Shimano Deore XT Shadow+
  • RD-M8100-SGS
  • 12-speed
  • Total capacity: 41 T
Chain
Shimano CN-M7100
Cassette
Shimano SLX
  • CS-M7100
  • 12-speed
  • Combination: 10-12-14-16-18-21-24-28-33-39-45-51 T
Pedals
ATB Alu Comp Reflex
Gear ratio
Zoom 1.69 - 8.63 m, 1*12

E-System

Engine
Bosch G4 Performance Line CX Cruise
  • Continuous rated power: 250 W
  • Max. torque: 75 Nm
Accumulator
Bosch PowerPack 500
  • Capacity: 500 Wh/13.4 Ah
  • Voltage: 36 V
  • Technology: Li-Ion
Breakaway at
25 km/h (15.5 mph)
Mileage
See BOSCH Range Assistant
No of notches
4 drive modes with support levels 60-340 % plus walk assistance

Wheelset

Hubs
Shimano SLX
  • Axle: QR15x100/12x142 mm
Rims
Oxygen PRO-D A19
  • ETRTO: 19 x 622
Tires
Continental Double Fighter III
  • Tire size: 50-622
  • Foldable

Cockpit

Handlebar
Oxygen E-Scorpo
  • Width: 660 mm
  • Backsweep: 9°
  • Rise: 25 mm
  • Clamp: 31.8 mm
Stem
Oxygen E-Scorpo
  • Handlebar clamp: 31.8 mm
  • Angle: 17°
Saddle
Oxygen Lynx
Seatpost
Oxygen E-Scorpo
  • Length: 320 mm
  • Diameter: 30.9 mm
  • Insertion depth: min. 100 mm
Shiftlever
Shimano Deore XT
  • SL-M8100-RA
  • 12-speed
Brakelever
Shimano Deore XT Trekking
  • BL-T8000
  • 3 finger
Display
Bosch Kiox

Data

Weight
20.5 kg
Sizes
46, 50, 54 cm
Color(s)
Meteor Grey
Laden weight
140 kg
  • Bike incl. rider, clothing and luggage

Geometry

schematische Skizze eines Fahrrades mit eingezeichneten Geometrie-Messpunkten

Frame height (cm) 46 50 54 Measuring mode
Seattube length A1 647 667 687 nominal
Seattube length A2 460 500 540 bottom bracket to top of seattube
Seattube length A3 289 271 285 bottom bracket to top of top tube
Top tube length B 584 610 627  
Top tube horizontal C 575 590 609 center headtube to center seatpost/seattube
Headtube angle (°) D 70,5 70,5 70,5  
Seattube angle (°) E 73 73 73  
Wheelbase F 1090 1106 1126  
Chainstay length G 463 463 463  
Headtube length H 140 160 180  
Bottom bracket drop I 55 55 55 distance of bottom bracket to hub level*
Bottom bracket height K 310 310 310 distance to ground*
Fork rake L 42 42 42  
Slope M 320 357 362 top tube level distance front to rear
Wheel radius N 365 365 365 incl. tires
Standover height O 692 684 701 top of top tube to ground**
Fork build height P 470 470 470 incl. lower headset cups*
Front wheel - bottom bracket Q 632 649 668  
Reach R 386 395 408 center bottom bracket to center headtube, horizontal
Stack S 619 638 657 center bottom bracket to center headtube, vertical
Stack/Reach (1:x)   1,60 1,62 1,61 ratio stack to reach
Seatpost diameter   30,9 30,9 30,9  
Stem length   80 90 100 center-center
Stem angle (°)   17 17 17  
Handlebar diameter   31,8 31,8 31,8  
Assembled spacers   23,2 + 10 + 10 + 5 + 5  
Handlebar width   660 660 660  
Cranklength   170 170 175  
    46 50 54  

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

** measured 1/3 from seattube and 2/3 from headtube, fork and rearshock not compressed (static)

// NEVER STOP