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ONESPORT OT08 PRO Dual Battery Mountain E-Bike

SKU: C89309In Stock

£1,199.00
£1,499.00Save £300.00
3 payments of £399.67 at 0% withklarna
  • SpeedSPEED15.5 Mph
  • SpeedRANGE112 Miles
  • SpeedMOTOR500W
  • SpeedBATTERY36Ah
  • SpeedCHARGING9 Hours
  • SpeedWEIGHT86 lbs
UK Delivery: 2–7 business days
Free standard UK delivery on most bikes
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This Model Is Fully Compliant With UK Road Regulations

This bike is built to comply with UK Electrically Assisted Pedal Cycle (EAPC) regulations, meaning it can be used on public roads and cycle paths without registration, tax, or a licence. Motor assistance is limited to 250W and cuts off at 15.5 mph (25 km/h).

See UK Legislation

Go Further with Dual Battery Power

Imagine setting off on a ride without worrying about where the next charge will come from. The OT08 PRO is built around a unique dual battery system, combining two 48V 18AH packs for a massive total capacity. This setup delivers an assisted range of roughly 105 to 118 miles, so you can confidently plan longer adventures across the British countryside, though real-world range will vary with hills, weather, and how much you pedal.

Onesport OT08 PRO electric mountain bike dual battery pre-assembled and adjusted

Built for British Roads and Trails

Every detail of the OT08 PRO is designed to handle real UK riding. The aluminium alloy frame keeps things sturdy yet manageable, while the 20 x 4.0 inch fat tyres soak up bumps from potholed lanes and gravel tracks. A 48V 250W motor—fully compliant with UK e-bike law—pairs with a smooth Shimano 7-speed drivetrain, giving you the right gear for every climb. Hydraulic disc brakes provide confident stopping power in wet weather, and the front suspension fork takes the sting out of rough surfaces.

Stay connected on the go with a Bluetooth-enabled display that links to your phone, and keep your kit secure on the integrated rear rack. The bike comes ready for British conditions with an IPX4 water-resistance rating, a bright integrated brake light, and a handy phone mount. You also get an air pump, tools, and a bell in the box. With a max load of about 265 lbs and a seat height adjustable from roughly 29.5 to 37.4 inches, it suits riders from 5'3" to 6'7".

Onesport OT08 PRO 48V36AH 190KM 20 inch electric bike manufacturer code

Dual Batteries for All-Day Exploring

Range anxiety becomes a thing of the past with the OT08 PRO's clever twin battery design. By housing two 48V 18AH batteries, it offers a combined capacity that can take you around 105 to 118 miles on a single charge in pedal-assist mode. Whether you're tracing a coastal path or commuting across town, you can ride further without constantly hunting for a socket. Just remember that actual range depends on factors like hills, rider weight, and temperature.

Onesport brand logo on OT08 PRO dual battery electric mountain bike
Onesport OT08 PRO model name on electric mountain bike frame
Onesport OT08 PRO electric bike frame size unspecified for mountain riding

Conquer Steep Hills with Ease

British landscapes are rarely flat, but the OT08 PRO's motor makes short work of tough climbs. Its 48V 250W motor churns out 65 Nm of torque, giving you a responsive boost when the gradient kicks up. You can tackle inclines of up to 30 degrees without breaking a sweat, so even the steepest Cotswold lane or Pennine bridleway feels manageable. The power delivery is smooth and natural, making every ride feel lively and controlled.

Full Suspension for Supreme Comfort

Glide over rough ground with less fatigue, thanks to the OT08 PRO's dual suspension setup. It pairs a front shock-absorbing fork with a rear suspension system to soak up bumps and vibrations. Whether you're tackling rocky bridleways or potholed city streets, this full-suspension design keeps the ride smooth and controlled. You'll stay fresher for longer, with more confidence on every mile.

Onesport OT08 PRO 500W motor powering dual battery electric mountain bike
Onesport OT08 PRO electric mountain bike suitable for riders 160-200 cm tall

Oversized Tyres for Superior Traction

Stay planted on loose or slippery surfaces with the OT08 PRO's 20 x 4.0-inch fat tyres. Their wide contact patch delivers exceptional stability and grip across sand, snow, gravel, and wet UK roads. These chunky tyres also act like extra suspension, cushioning the ride and boosting your confidence. You'll feel secure and in control, no matter what the trail throws at you.

Smart Display with Bluetooth Connectivity

Take command of your ride with the OT08 PRO's modern Bluetooth-enabled display. Pair it with the dedicated mobile app to view detailed riding data, adjust assistance levels, and tweak settings straight from your phone. This clever integration puts key metrics and control right at your fingertips, making every journey more informed and enjoyable.

Grey Onesport OT08 PRO dual battery electric mountain bike with 20 inch wheels
Onesport OT08 PRO electric mountain bike with dual battery and aluminium frame
Lithium-ion battery pack for Onesport OT08 PRO dual battery electric bike
20-inch wheel size on Onesport OT08 PRO dual battery electric mountain bike
Unisex design of Onesport OT08 PRO electric mountain bike with dual battery
Onesport OT08 PRO electric bike includes batteries for dual battery system
  • BRAND
    Onesport
  • CATEGORY
    Fat Tire
  • MOTOR POWER
    500W
  • RANGE
    112 Miles
  • SPEED
    15.5 Mph
  • BATTERY
    36Ah
  • WEIGHT
    86 lbs
  • CHARGING TIME
    9 Hours
  • BRAKE SYSTEM
    Hydraulic Disc
  • FRAME MATERIAL
    Aluminium Alloy
  • MAXIMUM LOAD
    265 lbs
  • INPUT VOLTAGE
    48V
  • TIRE SIZE
    20 inch
  • TORQUE
    65 Nm

Secure checkout and fast UK delivery on every order.

  • Free standard UK delivery on most bikes — 2 to 7 business days
  • Express delivery may be available on request
  • Full tracking included with every order
  • Pay securely with Visa, Mastercard, PayPal, Apple Pay, Google Pay, or Klarna
  • 0% finance available through Klarna at checkout

Before you order:

  • Delivery is to UK mainland addresses — some remote areas may have a small surcharge
  • Most bikes arrive 85–90% pre-assembled and include basic tools for setup
  • If you are unsure about sizing or specs, contact us before you buy

Full details at Payment & Shipping.

Simple and fair terms so you can buy with confidence.

  • 14-day return window — if the bike is not right for you, send it back
  • The bike must be unused, in original packaging, with all accessories included
  • A refund or replacement is issued after we receive and check the return

Please note:

  • Returns for change of mind must meet the unused and original condition requirement
  • If we sent the wrong item or it arrived faulty, we cover return shipping in full
  • All bikes include a 12-month manufacturer warranty as standard

Full details at Returns & Refunds and Warranty.

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