The most comfortable, efficient and practical system to join 2 normal bicycles into a tandem.

TRAX is a device designed to be assembled at the seat post of any bike allowing it to tow another one. The traction is made by a Kevlar wire and a mechanical system designed to pick it up back and to avoid any possibility to become tangled to the wheel.

TRAX is thought to share the cycling with anybody that you want, regardless of the skill level of either rider.

At the same time, the easy hooking and unhooking system allows both riders to change from 2 independent bikes to 2 bikes joint as tandem in less than 1 second.

         Do you want to enjoy TRAX?

Simple and effective

Simple and effective are the main premises in which the TRAX design has been based on.

TRAX can be installed in less than 1 minute to any bicycle with no tools. The device is designed to be attached to the seat post through 3 standard nylon flanges.

A simple knot at the end of the kevlar cable, allows a quick hooking and unhooking on all standard handlebar/stem of any bicycle.

Less than 5 seconds without having to stop the way.

The simplicity of the TRAX system results in a weight of only 95g.
This weight makes it imperceptible when it’s installed on the bike. It also permits carrying it in the bag or in the bike jersey without notice.


Endless possibilities

TRAX opens an endless space of possibilities that you would never imagine.

Venture yourself to ride some routes that you wouldn’t never imagine with your children, nephews/nieces, grandchildren, friends

TRAX opens endless possibilities to share the cycling without barriers!

Carry an emergency TRAX “back to home” in your bag to be able to tow whoever and whenever, in case a companion has a mechanical breakdown or something happens while cycling delaying the arrival time.

In team races where it’s allowed to tow your teammates (adventure raids for example), with TRAX there’s no need to think in anything else. No ropes, no carabiners, no extra bags to keep it.

Technical features


Weight of the device – 95g

Sizes of the seat post – From 27.2 to 31.6mm

Type of closure – Adaptable closure with a nylon flange

Sizes – 60x50x50mm



Material – Kevlar KV1500

Length – 1.90m



Maximum weight per towed cyclist – 90kg / 200lbs

Maximum recommended speed – 10km/h / 6mph


This project has been supported by:

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