







RocStem is our swiveling bicycle stem, This allows you to rotate your handlebars 90° to the side without tools. This makes your bicycle significantly narrower in no time and without tools – ideal for motorhomes, garages, basements, or anywhere space is at a premium.
Our SwingBack™The swivel function makes turning and swiveling the handlebars quick and easy. And if height is also crucial, our patented system ensures it's always at the correct level. FlatFit™ In the MAX models, this ensures that the handlebars remain particularly flat when swiveling.
Designed for modern bicycles and e-bikes, precisely manufactured from high-strength aluminium and tested according to DIN EN ISO 4210-5:2023. So your bike takes up less space – and you get more out of it.

Welcome to Rocker Parts, the developer of the innovative, swiveling Roc bicycle stemsStem AiO and RocStem Bend. Here you'll experience not only a revolution in terms of adaptability for your bicycle, but also....

Rocker Parts GmbH has had its RocStem swiveling bicycle stem tested according to the current DIN EN ISO 4210-5:2023 standard. This testing will be used in the future to...

Discover the true value of function, quality, and everyday usability. A stem is an inconspicuous component – until it makes all the difference...