Hard tail electric mountain tandem bike

From

€7,899

  • 21% VAT included, shipment costs not included
  • OLI Edge-SH 90Nm motor with integrated and removable 630Wh battery
  • Base components pack + assembly
  • Custom painting
  • “Bikefitting” geometry design

eCellecs is Campmajó’s hard tail electric tandem, designed for high-performance and comfort, our hard tail etandem is built for efficiency, control, and endurance. It features a powerful 250W motor with 90Nm of torque, reaching a top speed of 25 km/h, and comes equipped with a 600Wh battery, upgradeable to 725Wh or a Bosch system with 800Wh for extended range.

With its rigid rear triangle, our eCellecs ensures maximum power transfer and pedaling efficiency, making it perfect for both off-road trails and long-distance touring. The integrated and removable battery is centrally positioned for stability, easy charging, and maintenance.

At Campmajó, every tandem is fully customizable—from geometry and components to paintwork. Build your perfect ride with premium components from our trusted partners, including FSA, DT Swiss, SRAM, and SQ Lab, among others.

Our rigid models low step through is optional and free of charge. And it is designed to make the tandem fully accessible and comfortable. 

CREATE YOURS

Click to start your own customization form

Electric system options

Included in the base price with 630Wh battery

OLI eBike Systems is a leading Italian brand with a global vision, committed to innovation and top-tier performance. Our Gurugú base mount features the OLI Edge motor, delivering 90Nm of torque for smooth and powerful assistance. Paired with a 630Wh battery, it delivers consistent and dependable performance. 

DRIVE UNIT

90Nm carefully distributed to deliver a natural pedalling feeling in any circumstance. Perfect match for limitless eMTB

  • Max torque: 90Nm
  • Max assistance until 25km/h
  • Rated continuous output: 250W
  • Weight: aprox. 3kg

Edge-SH

DISPLAY AND CONTROL UNITS

High-definition TFT display packed in a slim and elegant design. It integrates with any handlebar.

  • 2″ color screen
  • Motor power output
  • Rider power
  • Gorilla-glass anti reflective
  • Handlebar button controller

High Vision

BATTERY OPTIONS

Additional cost of +€1,090 to the OLI base price, including BOSCH electric system with 800Wh battery

BOSCH is the most renowned name in the e-bike world. And now our Gurugú features its latest launch, BOSCH Performance Line CX motor, launched on October 24 with the latest tech and Smart System software updates. Gurugu will also be equipped with the new PowerTube 800Wh battery, BOSCH’s most powerful and energy-packed model yet. 

DRIVE UNIT

The latest eMTB model from BOSCH. Precise and controlled power. The ultimate uphill flow.

  • Max torque: 85Nm
  • Max assistance until 25km/h
  • Rated continuous output: 250W
  • Maximum power: 600W
  • Weight: aprox. 2.8kg

Performance Line CX

DISPLAY AND CONTROL UNITS

Intuitively controlled via the control units. Compact and protected against water splash and dust. Ideal for sporty adventures and demanding rides.

  • 2″ color screen
  • eBike Flow App updates
  • Activity tracking
  • Navigation function
  • eBike lock by removing the display

Kiox 300, System Controller and Mini Remote

BATTERY OPTIONS

Drivetrain specs and options

BACK

1 – Cassette

  • 11/50 – 11s or 11/51 – 12s
  • HG spline

2 –  Rear derailleur

  • 11 or 12s derailleur
  • Mechanical or AXS
  • Sram UDH
  • T-type ready

3 – Chain

  • KMC
  • eBike 11 or 12s

MIDDLE

4 – Mono chainring

  • FSA MEGATOOTH 34t steel
  • “Direct mount” BOSCH spline
  • Chain line: 52mm

5 – Rear timing chainring

  • Miranda 34t
  • BCD104 / 4b

6 – Stoker crankset

  • Miranda – Delta R2 Crankset ISIS 170mm
  • Spider: Miranda BCD104 / 4b

FRONT

7 – Chain tensioner

  • Campmajó ISCG system
  • 14t pulley
  • Protects chainring

8 – Front timing chainring

  • Miranda 34t
  • BCD104 / 4b

9 – Captain crankset

  • BSA 73mm
  • FSA – COMET 170mm
  • Spider: Campmajó simple BCD104 / 4b

RECOMMENDED OPTIONS

  • 11/50 – 11s
  • Mechanical
  • +€0
  • 11/50 – 11s or 11/51 – 12s
  • Mechanical
  • +€175
  • 11/51 – 12s
  • Electronic
  • +€275

Brakes options

Braking is one of the most critical aspects of tandem riding. With greater weight and higher speeds involved, we equip all our hard tail mountain tandem builds with high-quality 4-piston calipers and 203mm rotors — delivering powerful, reliable stopping power when it matters most.

  • Shimano DEORE
  • +€0
  • Shimano XT
  • +€80
  • Magura MT7
  • +€167
  • Formula CURA
  • +€467

Wheel options

MUD boost – Our most affordable option, included in the base price. Great value for money. Ideal for riders who won’t tackle the most aggressive trails or terrains.

  • 29″ or 27,5″
  • Aluminium
  • 30mm inner width
  • 32 spokes
  • BOOST 110x15mm / 12x148mm
  • Disc 6b
  • HG spline
  • +€0

M30 – Upgrade option with proven performance. Made by a trusted Catalan brand we have worked with the most. Reliable, durable, and perfect for varied terrain and regular use.

  • 29″ or 27,5″
  • Aluminium
  • 30mm inner width
  • 32 spokes
  • BOOST 110x15mm / 12x148mm
  • Disc 6b
  • HG spline
  • +€125

HX 1700 – Trusted performance from the world-renowned DT Swiss. Similar top-tier quality as Racing Parts, with the added assurance of a globally respected brand for its precision, reliability and expertise.

  • 29″
  • Aluminium
  • 30mm inner width
  • 28 spokes
  • BOOST 110x15mm / 12x148mm
  • Disc 6b
  • HG spline
  • +€700

M34 – Our top-of-the-line wheels from RP, now in carbon. Made with ultra-resistant, high-quality carbon. Lighter than any other option we offer, without compromising durability or performance.

  • 29″
  • Carbon
  • 34mm inner width
  • 32 spokes
  • BOOST 110x15mm / 12x148mm
  • Disc 6b
  • HG spline
  • +€835

Seat posts options

RIGID SEATPOST

COMET – simple and reliable. Our standard option, included in the base price. Lightweight, low-maintenance, and ideal for riders who don’t need on-the-fly height adjustments.

  • Ø30.9mm
  • +€0

MECHANICAL DROPPER POST

Dropper SHOT – practical and versatile. Adjust saddle height quickly and easily with a cable-actuated system. A solid upgrade for more dynamic riding on changing terrain.

  • Ø30.9mm
  • +€85 per unit

SUSPENSION SEATPOST

EESILK+ – smooth and comfortable. Designed to absorb bumps and vibrations on rough terrain, its elastomer-based system provides enhanced comfort for a smoother ride.

  • Ø30.9mm
  • +€220 per unit

ELECTRONIC DROPPER POST

Reverb AXS – latest technology and high-performance. High-end wireless system for fast, precise saddle height adjustments at the touch of a button. Clean setup, minimal maintenance, and top-tier performance.

  • Ø30.9mm
  • +€1064 per unit

Stoker stem options

SIMPLE ADJUSTMENT

Our simplest adjustable stoker stem. Designed for tandems with standard seatposts that will remain in a fixed position over time, with minimal changes to the stoker handlebar or the captain seat.

  • Vertical adjustment via clamp on the captain’s seatpost
  • Horizontal adjustment through the stem itself
  • Seatpost clamp: Ø31.6mm
  • Handlebar clamp: Ø31.8mm
  • +€0

SIMPLE ADJUSTMENT FRAME CLAMP

This model is the same as the first but features our double-diameter clamp system. The same stem clamp secures the captain’s seatpost, allowing seat position adjustments without affecting the stoker handlebar position. It is also ideal for dropper seatposts.

  • Diagonal adjustment
  • Campmajó double-diameter seat tube clamp system
  • Seat tube clamp: Ø34.9mm (lower) and Ø31.6mm (upper)
  • Handlebar clamp: Ø31.8mm
  • Includes threaded holes for one bottle cage
  • +€48.4

DOUBLE ADJUSTMENT FRAME CLAMP

In this model, an angular adjustment is added to the longitudinal adjustment. This system allows the handlebars to be positioned almost anywhere in space, ensuring maximum comfort and flexibility for the stoker, whether for personal fit or to accommodate different riders.

  • Longitudinal and angular adjustment
  • Campmajó double-diameter seat tube clamp system
  • Seat tube clamp: Ø34.9mm (lower) and Ø31.6mm (upper)
  • Handlebar clamp: Ø31.8mm
  • Includes threaded holes for two bottle cages
  • +€108.9

Frame only options

To ensure the optimal operation of the our e-tandem frames’ drivetrain and to avoid any potential compatibility problems, we only sell electric frames including the electric system and timing drivetrain components. 

Hard tail electric tandem frame

  • Aluminuim frame and primary drivetrain
  • OLI Edge-SH 90Nm or BOSCH PowerLine CX 85Nm motor with integrated and removable 630, 725 or 800Wh battery 
  • “Bikefitting” geometry design
  • Any opaque RAL colour for the frame and black or white contrasting logos

From

€5,199

21% VAT included, shipment costs not included

Hard tail double battery tandem frame

  • Aluminuim frame and primary drivetrain
  • OLI Edge-SH 90Nm or BOSCH PowerLine CX 85Nm motor with integrated and removable 630, 725 or 600Wh batteries
  • “Bikefitting” geometry design
  • Any opaque RAL colour for the frame and black or white contrasting logos

From

€6,150

21% VAT included, shipment costs not included

Fill out your form and we will send you a detailed quote along with the design of your tandem! All non-binding

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