The continuously adjustable pedal crank

Our patent-pending, universal, WX Vario bicycle crank adapter enables people with limited knee and/or hip mobility to train on a bicycle or ergometer. The length of the invalid crank is infinitely adjustable from 0 to 170 mm to ensure optimum effort and movement.

WX Vario | Einzelteile des Fahrradkurbeladapters

WX Vario | Der montierte Kurbeladapter mit Pedale und Zahnkranz

WX Vario | Die Tretkurbel montiert an einem Mountainbike

WX Vario | Verstellschiene ist stufenlos arretierbar

Determine your individual pedaling radius

Thanks to the infinitely adjustable length of the crank arm, you can optimize the pedalling radius to suit your individual range of motion and power input. The crank radius can be reduced from the maximum position to almost the 0 position using the sliding block.

WX Vario | Universeller Nachrüstsatz für alle gängigen Fahrräder/Ergometer

Training with limited knee or hip mobility

The bicycle crank adapter enables people with limited knee and/or hip mobility to train effectively and gently on a bicycle or ergometer. Athletes (e.g. after an injury-related break) can also return to cycling in a safe and controlled manner.

WX Vario | Schonendes Training auf dem Fahrrad oder dem Ergometer

Universal retrofit kit for all standard bikes/ergometers

The WX Vario is designed for all standard bicycle cranks. It is fitted directly to the existing crank or crank arm. Even unusual cranks can be fitted using the spacers supplied.

The WX Vario in detail

The WX Vario has been tested for safety in accordance with DIN EN ISO 4210-2-2023 and is robust and durable. The scope of delivery includes the adjustment rail, two crank clamps, the sliding block, the pedal screw and spacers in various designs:

WX Vario | Scope of delivery with adjustment rail, sliding block, spacer block and pedal screw

The WX Vario is fitted to the existing pedal crank arm.
Your existing pedal will continue to be used.

WX Vario | Der montierte Kurbeladapter mit Pedale und Ritzel

(Utility model no. 20 2020 104 219 protected and patent pending)

The WX Vario in practice

WX Vario | Montiert an einem Mountainbike

WX Vario | Montagebeispiel an der Tretkurbel eines Mountainbikes

WX Vario | Detailaufnahme der Tretkurbel

WX Vario | Montiert an einem Wettkampfrad

WX Vario | Anwendungsbeispiel an einem Rennrad

WX Vario | Montiert an einem Trekking-Bike

WX Vario | Detailaufnahme an einem Trekking-Rad

WX Vario | Anwendung am Beispiel eines Ergometers

WX Vario | Draufsicht auf das WX Vario am Ergometer

Assembly, adjustment & application

In this video we show you how to mount and adjust the WX Vario according to your needs.

The WX Vario in the press

We are pleased about reports and the presentations of the universal crank shortening

BIKE magazine (2023.11.08).

“I still remember well the first time I sat on an ergometer with shortened cranks after a serious knee injury. I spun the pedals very slowly, carefully and unsteadily. It was the most wonderful feeling in the whole time after the accident and gave me new hope to get back on the bike. Apart from the physical rehabilitation benefits, a crank shortening adapter can give injured riders a positive mental boost.”
BIKE editor Jan Timmermann

Radsport-News.com (2024.11.06)

Whether after an injury, due to a handicap or to determine the optimum crank length: with the WX Vario crank adapter, cyclists with special requirements can adjust their standard cranks to the millimetre. Lengths from 0 to 170 mm are possible; of course, it is not possible to go longer than the crank fitted to the bike. Read more (german)…

PT Magazine for physiotherapists (Issue 12/24)

The unique bicycle and ergometer crank adapter that fits any crank, patent pending and infinitely adjustable from 10 - 170 mm. Thanks to its easy installation, the WX-Vario turns any bike or ergometer into the perfect and individual training aid. Read more (german)…

Available now!

Cost per Set: 169 € (mainframe and conversion kit)
The conversion kit for use on the right or left costs 49 €

Order at wexel shop

If you have any questions or are interested in a personal demonstration or test on site (Fürstenfeldbruck, Germany), please contact Mr. Andreas Sextl: +49 8141 – 3538433 or via email: anfrage@wexelpunkt-wxvario.de

EAN Adapter (mainframe): 4170000199212
EAN Adapter (mainframe + kit right): 4270004619508
EAN Adapter (mainframe + kit left): 4270004619515
EAN conversion kit (right): 4170000201182
EAN conversion kit (left): 4170000201175