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      ROCKRIDER E-bike 900

      €77,75 EUR
      €399,95 EUR

      • Free worldwide shipping

      • Free returns

      • Carbon neutral

      • Secure payments

      Features

      Design benefits

      autonomy
      autonomy
      Ride for up to 68 km
      power
      power
      70 Nm torque and 500 W max power central motor
      smooth pedalling
      smooth pedalling
      The built-in motor automatically assists you when needed. Perfect for MTBing.
      control
      control
      Enjoy: raised position, 120 mm suspension, very wide tyres, Ergofit saddle.

      Design details

      WHAT SIZE MOUNTAIN BIKE TO CHOOSE?
      Please note, for size S, the minimum height is 1.60 m and not 1.50 m as indicated in the drop-down menu grid. If you are on the edge between 2 sizes: Choose the smaller size for easier steering (easier to handle) and comfort (straighter back). Choose the larger size for easier pedalling with a more stretched out position (position more suited to performance)
      IS ELECTRIC MTB A SPORT?
      You have to pedal to go forward! The electric assistance boosts your pedalling by 320%, helping you ride over obstacles. You'll get to enjoy longer MTB rides. The motor stops when you stop pedalling. The walking mode compensates for the weight of the bike when you need to put your feet down.
      A WORD FROM THE TEAM
      Our team of mountain bike enthusiasts created this E-ST 900 electric mountain bike at our B'Twin Village in Lille, France. We designed and tested the E-ST 900 MTB by involving MTB riders at every stage of the project.
      STURDY, PLAYFUL FRAME
      The frame of the Rockrider E-ST900 electric MTB is made of 6061 aluminium with hydroformed tubes. Why? The battery sits snugly on the frame to improve the robustness of this electric mountain bike. The forged aluminium parts make it compatible with the new 27.5'+ tyre format (wider than the 27.5') in the rear, while remaining easy to manoeuvre. We've kept a frame geometry with short bases for easier steering.
      MOTOR WITH 70NM TORQUE
      The BROSE T Aluminium central motor is specially designed for high altitude mountain biking: - 70 Nm torque to handle large obstacles and steep gradients - metal housing for maximum durability - belt for an ultra-quiet motor - and sealed bearings to withstand the sometimes adverse weather conditions of mountain biking
      SAMSUNG BATTERY CELLS
      Our battery is equipped with SAMSUNG SDI cells, renowned for their high level of reliability and safety.
      BATTERY LOCK
      Our Rockrider mountain bike team has designed a battery that locks in place with a simple lever. Child's play! This locking system prevents the battery vibrating when riding on rough terrain. A key lock is also installed if you want to protect your battery from theft. For example, if you park your bike in the street.
      CONTROL SCREEN
      A discreet LCD control screen. The screen is right next to your left grip so you don't have to let go of the handlebar to choose from the 4 assistance modes available: Eco+, Economy, Standard, Boost. You'll also find a host of useful information: -Assistance level -Battery level -Speed (current, average, maximum) -Remaining battery life -Distance covered (total and trip)
      4 ASSISTANCE MODES
      Mode 0 - Deactivated The battery is not used. Mode 1 - Economy +40%: Extend your rides while conserving battery life. Ideal when you want a little push on small gradients. Mode 2 - Economy +80%: Gain power. A perfect helping hand for keeping up with other mountain bikers. Mode 3 - Standard +160%: This is the most versatile mode. Climb any slope without getting too tired and without using too much power. Mode 4 - Boost +320%
      ROCKSHOX FRONT SUSPENSION
      Ride over obstacles (roots, pebbles, stones, etc.) easily thanks to the Rockshox JUDY fork with 120 mm of travel. This fork has: - a thru axle and conical pivot for more durability. - pneumatic spring for optimal adjustment based on your weight - rebound adjustment and lockout for better control, depending on the terrain.
      SINGLE CHAINRING DRIVETRAIN
      The E-ST900 electric bike is equipped with a single chainring and ChainFlow 3D anti-drop technology to prevent chain drops. A single shifter on the right handlebar makes it easy to shift between the 10 speeds. In detail: - ChainFlow anti-derailment 34-tooth chainring - SHIMANO DEORE M6000 Shadow+ 10-speed rear derailleur with long cage - SHIMANO DEORE M6000 right shifter - SHIMANO DEORE 10-cog cassette (11-42 teeth) - KMC E10 Turbo special e-bike chain
      27.5+ Sunringle Duroc 40 Wheels
      These wheels were specially designed for this mountain bike: - 36 mm rims (width between brackets) and 32 spokes at the front and rear for greater durability and a good hold on wide (2.8') tyres. - BOOST format thru axles (12x148 rear, 15x110 front) for greater durability - Aluminium hubs with sealed bearings. - TUBELESS READY rims: you will need TUBELESS tyres, specific Presta valves, and puncture sealant.
      HUTCHINSON TYRES
      So you feel safe on any terrain, and to provide traction suited to your motor, the E-ST900 mountain bike is equipped with Hutchinson Taipan Koloss 27.5+ tyres with a 2.8' cross-section. Our test riders particularly liked these tyres for their grip on the ground. Mounted on wide rims, these tyres ensure grip, traction, and comfort on any terrain.
      HYDRAULIC DISC BRAKES
      No matter the conditions you ride in (dry, muddy, wet), the Tektro TKD32 hydraulic disc brakes on the front and rear provide powerful, progressive braking. Oversized 180mm diameter discs provide even more power.
      HANDLEBARS, STEM, GRIPS
      The adjustable stem brings the E-ST 900 controls to your hands. The all-aluminium Rockrider stem is 70 mm (size S), 80 mm (size M/L), or 90 mm (size XL) and can be raised to 5 adjustment intervals: + 0mm, + 7.5mm, + 15mm, + 22.5mm, + 30mm. In detail: - 720mm oversize ROCKRIDER SPORT aluminium handlebar - ROCKRIDER SPORT 'soft touch' ergonomic grips for good grip and a comfortable feel
      Saddle
      Since your mountain bike rides will get longer and longer, it is important to sit comfortably. So our teams designed the exclusive ROCKRIDER Ergofit Pro saddle. It fits all hip sizes and has a curved shape that is particularly good for sport trail rides. The 31.6 mm aluminium seat post ensures compatibility with most adjustable and suspended seat posts on the market.
      Platform pedals
      The bike comes with 520 Grip MTB platform pedals (ref. 8487130) with a wider pedalling surface and more pronounced dots for better grip on the pedal.However, if you are looking for improved performance when pedalling and better control of the bike when cycling, we recommend replacing them with clipless pedals with platforms or wide aluminium platform pedals.
      Accessories
      Your E-ST900 mountain bike is fitted with a bell, lights, wheel reflectors and pedals. The frame is compatible with: - front and rear mudguards - stand - bottle cage (on the horizontal tube) - saddle pouch - rear pannier rack (fixed onto the seat stays or special mounts for wide bikes, 148 mm gap for the rear wheel & 2.8' fat tire) - child seat ...
      OUR ADVICE FOR YOUR FIRST RIDES
      Tip no.1 When mountain biking, there is always the risk of a fall: don't forget to wear a helmet. Tip no. 2 A puncture could happen at any time, so always remember to take a repair kit and a 6 mm Allen key for removing your wheels. Tip no.3 If you don't want to stop to drink, bring water in a bottle or water bladder to access it while riding.
      Care advice
      Leave your battery on the bike when washing using a hose. This will protect the connectors from rusting.

      Specifications

      Details

      Level Of PracticeAdvanced
      IntensityMid Intensity
      Power AssistedWith Electric Assistance
      Number Of Speeds10 Speeds
      Bike Frame MaterialAluminium Frame
      Motor PositionMiddle Position
      Number Of ChainringsSingle Chainring
      Maximum Load100 Kg
      Lighting TypesBattery Lighting
      ConnectedNot Connected
      Wheel Size27.5+'
      Built-In BatteryWithout Built-In Battery
      Type Of BrakesHydraulic Disc Brakes
      Type Of PracticeLeisure Mtb
      Battery Capacity (In Wh)500 To 599 Wh
      Type Of Bicycle ForkSuspended Fork
      Weight (In Kg)22 Kg
      Removable BatteryRemovable Battery
      Charger TypeSector
      Handlebar Diameter31.8 Mm
      Number Of Bottle-Cage Holders1
      Seatpost CompatibilityTelescopic Seatpost Not Compatible
      Trunk Bag FixationTrunk Bag Fixation
      Tubeless Compatibility (Tyre)Non Tubeless Compatible
      Tubeless Compatibility (Wheel)Tubeless Compatible
      Type Of SeatpostRigid
      Cassette11/42
      Crankset34
      Crank Length (In Mm)175 Mm
      Seatpost Diameter31.6 Mm
      Engine Torque Maximum70 Nm
      Front Suspension Travel120 Mm
      BellWith Bell
      Handlebar Width720 Mm
      Rear Suspension TravelNot Concerned
      SuspensionSemi Stiff
      Autonomy (In Km)Up To 70 Km

      Composition

      Bike Frame: 100.0% Aluminium
      Example title

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