C/DURO E/EPONA
Arguably the lightest full-power e-bike
E/EPONA delivers everything you love about its analog sister. Advanced materials and technology, combined with a clever single-pivot design and progressive geometry, make it a truly versatile trail machine. Agile and playful in corners yet composed when the trail gets rough, E/EPONA lets you push your limits. Smash berms on flow trails, shred bike parks, and send jumps just like on a regular bike, with the extra power to ride more laps, explore further, and even shuttle your friends.
Weighing just 2 kg, the Maxon Air S is the lightest full-power e-bike motor. With 90 Nm of torque and up to 620 W of peak power, it delivers a natural ride feel with serious performance — perfectly complementing the E/EPONA’s suspension design. Built around a single-pivot layout with 150 mm of travel, it’s tuned for solid performance under braking (Ar ~ 90%) and minimal pedal kickback (6° at 32/10 gear). With 8% progressivity, the system is designed for an air shock, making the E/EPONA as simple and sophisticated as it is capable on every ride.
When designing the geometry, we focused on giving riders the freedom to choose size based on riding style, not just height. All sizes feature a low standover height and shorter seat tubes to fit the longest dropper posts on the market. This means even smaller riders who want extra stability and confidence can comfortably size up.
NOT JUST ANY CARBON FIBER
All C/DURO frames are made in an automated process from advanced carbon fibres UMS40 and M40J with very high stiffness (~400GPa) and strength (~4500MPa), resulting in a very stiff, strong and lightweight frame. The stiffness gives our bikes distinctively precise and agile ride feel without harshness thanks to vibration damping capabilities of our tubes. A very high stiffness to weight ratio puts the natural frequency of C/DURO frames higher to avoid resonance and loss of grip.
CONFIDENT
Combination of high stiffness and aggressive geometry give the E/EPONA distinctive ride feel that will boost your confidence.
LIGHTWEIGHT
Our advanced design and technology, paired with the Maxon BIKEDRIVE AIR S and 400 Wh battery, result in arguably the lightest trail e-bike frameset out there.
RELIABLE
On each side, there is an oversized 16004 bearing that was selected with sufficient reserve to last you longer.
FASTER
Weighing just 2kg, the Maxon Air S is the lightest full-power e-bike motor. With 90Nm of torque and up to 620W of peak power, it delivers a natural ride feel with serious performance.
ADJUSTABLE
The oversized head tube is compatible with ZS56/ZS56 angle headsets, giving you the freedom to fine-tune your bike’s geometry to match your riding style.
UDH COMPATIBLE
The frame is compatible with UDH and Transmission standards.
BUILD YOURS
PRICE UPON REQUEST
C/DURO E/EPONA comes as a frame-set, the core of your custom build. If you’re looking for a full-build bike, we’re here to help you choose the right components that match your riding style and budget.
Made with passion in the heart of Europe.
HARDWARE INCLUDED WITH THE FRAME
- Bearings for main pivot
- Bolts for shock
- Seatpost clamp
- Rear axle
- Headset
- Drive unit, charger
SPECIFICATIONS
| Headset | Top: ZS56 Bottom: ZS56 |
| Fork travel (intended) | 150 – 170 mm |
| Shock length & stroke |
230 x 57.5 - 60 mm • stroke 57.5 mm → 145 mm travel • stroke 60 mm → 150 mm travel |
| Seat tube inner Ø | 31.6 mm |
| Derailleur hanger | SRAM UDH |
| Brake mount | 180 mm rotor (direct) Max 203 mm (with adapter) |
| Rear axle | Boost 148 mm |
| Drive unit | Maxon Air S |
DRIVE UNIT
| Motor | Maxon Air S |
| Max torque | 90 Nm |
| Max motor power | 620 W |
| Max support factor | 400 % |
| Motor weight | 2 kg |
| Battery capacity | 400 Wh or 600 Wh |
| Voltage | 36 V |
| Battery weight | 1.8 kg (400 Wh) 2.8 kg (600 Wh) |
| Time to 80% charge | 3 hours |
GEOMETRY
| Size | 450 | 475 | 500 | 535 |
| HT angle | 64° | 64° | 64° | 64° |
| HT length | 125 mm | 125 mm | 135 mm | 149 mm |
| Reach | 450 mm | 475 mm | 500 mm | 535 mm |
| ST angle | 79° | 78° | 78° | 78° |
| ST length | 350 mm | 405 mm | 440 mm | 475 mm |
| BB Drop | 27 mm | 27 mm | 27 mm | 27 mm |
| Wheelbase | 1192 mm | 1222 mm | 1247 mm | 1287 mm |
| Stack | 620 mm | 629 mm | 629 mm | 639 mm |
| Chainstay length | 450 mm | 450 mm | 450 mm | 450 mm |
| Rider height | 160–176 cm | 172–185 cm | 182–195 cm | 190–203 cm |
The right frame size depends on your riding style. If you want more stability and support from the bike, choose a larger size. If you prefer agility and a more playful feel, a smaller size may suit you better.
Geometry may vary depending on the frame size, fork rake/offset, and wheel choice.
Interested in buying E/EPONA?
Simply drop us an email at tomas@cdurobikes.com or fill out the form.
We’ll get back to you as soon as we’re off the trails.
#CDUROEEPONA
