ePure Flex

ePure Flex

Solid-Axle (36H/OLD 135mm) / 700C / EU
€899,00
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ePure Flex
  • ePure Flex
  • ePure Flex
ePure Flex

e‑Bike Conversion Kit

ePure Flex

Expand Your Ride.

From city commuting to entry-level road and gravel bikes, ePure Flex brings the e-bike experience to more riders.
€899,00
In stock
Axle TypeSolid-Axle (36H/OLD 135mm)
Wheel Size
Charger AC Type
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Description

Minimalist Two-Component Design: Consisting solely of the Battery/Controller Dock and the Rear Solid-Axle Motor, the system adds only ~3.25 kg total weight, preserving your bike’s original handling dynamics.

Intuitive HMI & Smart Memory: One-button control for power and 3 assist levels, with automatic memory recall for your last used assist mode upon startup.

Natural Pedal Assist: The built-in torque sensor provides zero-latency motor response, delivering power that feels like an organic extension of your own legs.
Specification

Battery & Controller Dock:

  • Capacity: 36V/4.9Ah(176.4Wh)/10S1P (Samsung INR21700-5000)
  • Dimensions & Weight: 233x 53.9x91.2 mm/(Approx. 1.2 kg with controller dock)
  • Protection & Communication: IP65/CAN BUS
  • Certifications: CE/IEC62133, UN38.3, EN50604, ISO 13849, BSMI, UL2271, RoHS
  • User Interface: 5-LED multi-function indicator

Solid-Axle Motor:

  • OLD: 135mm (Anti-rotation flat width: 9mm)
  • Rated Power/Torque: 250W/35 Nm
  • Weight & Speed Limit: 2.0 kg
  • Sensor Type: Integrated Torque Sensing Freehub
  • Wheel Compatibility: 20" to 700C (13G/2.3mm spokes, recommended 2-cross lacing)

Protection & Certifications: IP65/ CE, ROHS, EN15194
Delivery and Returns
  • Fast shipping across Europe and UK.
  • Orders are typically dispatched within 7 business days.
  • Shipping options and delivery times may vary by region.
  • 14-day return policy on eligible products.
  • Products must be returned unused and in original packaging.
  • Return shipping costs apply unless the item is faulty or supplied incorrectly.

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FAQ

Q1. What bikes are compatible with ePure Flex?

ePure Flex is designed for bikes with a 135mm quick-release rear dropout and standard water bottle cage mounts. Most city, hybrid, trekking, fitness, and mountain bikes meet these requirements.
Q2. Why choose ePure Flex instead of a new e-bike?

ePure Flex lets you enjoy the benefits of electric assistance without replacing the bike you already own. Whether you're commuting, running errands, tackling hills, or simply riding for leisure, ePure Flex makes every ride easier and more enjoyable. With a simple retrofit, you can extend your riding range, reduce fatigue, and experience the convenience of an e-bike at a fraction of the cost of purchasing a new one.
Q3. Will ePure Flex change the way my bike rides?

ePure Flex is designed to preserve the natural riding feel of your bike. When the system is switched off, the low-resistance hub motor allows you to ride much like a conventional bicycle. When assistance is enabled, the system provides smooth, responsive support without overwhelming the riding experience.
Q4. How can I check if my frame has enough clearance?

You can download our ePure 5-Second Fitment Checker to quickly verify motor and battery clearance or consult with the bike shop before purchasing.
Q5. Do I need to modify my bike to install ePure Flex?

No frame modification is required. ePure Flex is designed as a retrofit system that can be installed on compatible bikes while preserving the original ride characteristics and appearance.
Q6. What's the difference between ePure Flex and ePure Edge?

ePure Flex is designed for a wider range of bicycles using quick-release OLD 135mm dropouts, while ePure Edge is optimized for modern road and gravel bikes with OLD 142mm thru-axle rear dropouts.
Q7. How far can I ride with ePure?

Range varies depending on the route and riding conditions. Based on our real-world testing and rider experiences, ePure can typically cover 40-60 km on flat to moderately rolling terrain. For more challenging climbs, riders have completed routes exceeding 25 km with 500-700 m of elevation gain, including gradients averaging 15% and reaching up to 21%.

As range is influenced by terrain, rider effort, assist level, and environmental conditions, actual results may vary. These figures are intended as a general reference only.
Q8. Can I install ePure Flex myself?

Yes, but wheel building is required as part of the installation process and technical knowledge. For most riders, we recommend having the system installed by a qualified bicycle dealer. If you purchase our wheel-building service, you'll receive a ready-to-install motor wheel together with the ePure kit, making the remaining installation straightforward by following our instruction manual.