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Engineered & Designed by Rocker Parts
📦 Can you wait? Please allow us up to 5 extra business days for shipping and secure your 10 % discount. Use the code: NO RUSH Without a discount, we ship as usual in 1-2 days.
📦 Can you wait? Please allow us up to 5 extra business days for shipping and secure your 10 % discount. Use the code: NO RUSH Without a discount, we ship as usual in 1-2 days.
📦 Can you wait? Please allow us up to 5 extra business days for shipping and secure your 10 % discount. Use the code: NO RUSH Without a discount, we ship as usual in 1-2 days.
📦 Can you wait? Please allow us up to 5 extra business days for shipping and secure your 10 % discount. Use the code: NO RUSH Without a discount, we ship as usual in 1-2 days.
And suddenly there was space.

More space for your bicycle – with one simple movement

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.

August 8, 2025

Why swiveling stems

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....

 

June 27, 2026

RocStem successfully tested according to DIN EN ISO 4210-5:2023

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...

 

July 1, 2025

Expensive or good value? Function and quality trump price.

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

 

Authorized dealers & service partners
Bella Bici GmbH
ABikes
Ejunkie Powerful Mobility
boxx-inn
DerBiker24.de
Biketool24.de
alles ums rad
Fahrrad XXL Kalker
HOT.BIKE Waldkirch
Bella Bici GmbH
ABikes
Ejunkie Powerful Mobility
boxx-inn
DerBiker24.de
Biketool24.de
alles ums rad
Fahrrad XXL Kalker
HOT.BIKE Waldkirch
boxx-inn
Tretrollermax
Ejunkie Powerful Mobility
Sport Neuner
Fahrrad XXL Kalker
Bike Service Brandt
Jungherz GmbH
Radzentrum Nagold
E-Bike Pro
Sport Hoffmann
woba RadStudio
Radhaus Naumburg
Radladen Teumer
ABikes
Schelp & Fischer oHG
Radsport Pertl
Fun & Sport e.K.
Bike Store 57
Radsport Wagner
Fahrradhaus Schoknecht GmbH
HOT.BIKE Emmendingen
Bella Bici GmbH
Fahrrad Boeljes
Zweiradhaus Kämpflein
RADSCHLAG
Fahrrad Böttcher
Sputnik Bikeshop
Radhaus Schäuble
Der kleine Fahrradladen
bikeverleih-garmisch
2-rad Mueller
Biketool24.de
Fahrrad Niebur
Fahrradhaus Mangold
Auto & Motorrad Schuler GmbH
Fahrradcenter Oberland GmbH
A7 Bikestore
Cycle-m
Fahrrad Müller
natürlichRAD
alles ums rad
Bike-Shop-Klaiber
Ing. Walter Katzenbeisser
MRZ-WEBER / Drahtesel Der Fahrradladen
Bikefear
Bike Monkey
Auto&Zweirad Gertzen GmbH
Seilers Radsport
Radshop Respect GmbH
Schmidt-Adventureparts
HOT.BIKE Waldkirch
eBike-Haus.de GmbH
Rad-Sport Schriewer
DerBiker24.de
RADWECHSEL GbR
THEeRIDE
Vineyard-Bikes
Rad und Sportservice Wall
Sport Consult – Karl Posch
Martin e-Bike and more
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Rocker Parts GmbH
Bikesport Scheid
heiligenhafen.bikes
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