Folding bikes & e-bikes
Folding bikes segment belongs to the fastest growing in the cycling industry. Folding e-bikes are becoming a first choice of transportation for modern city dwellers in crowded European cities.
Efneo’s GTRO is a perfect match for folding bikes & e-bikes. All small-wheel bikes are facing the same challenge – at high speed, the chainring quickly becomes too small and the cadence skyrockets. On the other hand, front derailleurs are too spacious to be used and only small-range rear derailleurs can be applied, due to bike’s small size.
With the GTRO a bike’s designer gets much more flexibility. The physical chainring (or beltring) is small, while virtually it gets very large on a 3rd gear. With a folding e-bike, no rear derailleur is necessary to make gear shifting possible.
We are showing GTRO on Strida and Brompton, two top brands with which GTRO is now technically compatible. For both bikes GTRO offers better gear ratios, shifting & ride comfort and (as far as we know) higher reliability than original gear systems used on these brands.
Our objective is to make GTRO the first choice for all mid- and high-end folding brands on the planet.