Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for
an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for
a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:

iF SOCIAL IMPACT PRIZE
(free of charge)

Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

Vorbau X-ACT Q.A.S / Stem

Vorbau X-ACT Q.A.S
Vorbau X-ACT Q.A.S

EUROBIKE AWARD

EUROBIKE AWARD

The QAS was designed for city and trekking bikes and is available both as an Ahead Stem and a Shaft Stem with a shaft length of up to 300 mm. Angle adjustment is effected without tools by means of a quick-release with integrated child protection. The technical design of the QAS enables the parallel adjustment of handlebar inclination with simultaneous angle adjustment, using a double-joint system with separate clamping of the handlebars by means of a dual clamp. The QAS enables variable adjustment for a sporting or comfortable sitting position. The toothed adjusting mechanism provides strong clamping which can be simply changed and re-adjusted by means of the quick-release.

Client / Manufacturer

Wilhelm Humpert

Wilhelm Humpert GmbH & Co. KG
Wickede/Ruhr, Germany

GO TO PROFILE
Design

Wilhelm Humpert

Wilhelm Humpert GmbH & Co. KG
Fellbach, Germany

GO TO PROFILE