Invention lab
The winning projects
the SPEZI 2025
With the STEPTRIKE, Denis Lautier combines 20 years of research with true craftsmanship. Its unique V-LAUTIER crankset replaces the traditional circular motion with a linear lever system that enables smooth and natural pedaling. The load on the left and right leg can be adjusted individually – even while riding. This makes the STEPTRIKE not only suitable for sports enthusiasts but also ideal for rehabilitation and physiotherapy. The system engages the entire muscle chain, reduces strain on the heart and joints, and makes cycling noticeably more efficient. Handcrafted in the French Jura, the V-LAUTIER crankset stands for innovation, comfort, and pure riding pleasure.More info
Pieter Hollebrandse has completely reimagined the classic drum brake. Instead of the usual mechanical operation, he relies on an innovative hydraulic system that delivers significantly more braking power and a much more precise feel at the lever. Pieter has been riding with this system on his own bike for six years – reliable and low-maintenance. The secret: a hydraulic body with two pistons acts directly on the brake shoes, eliminating friction losses. The result is noticeably improved braking performance that immediately convinces both private riders and industry professionals. A practical conversion kit is planned, allowing conventional mechanical drum brakes to be easily upgraded into powerful hydraulic systems.More info
There can never be enough inventions for sustainable, efficient and needs-based mobility! In 2026, SPEZI will once again present the ten most promising contestants and award prizes to the winning projects in the public vote.
Enjoy the creative variety and choose the most fascinating idea on SPEZI by giving your vote to the design that impresses you the most in the SPEZI.
