Who Is THUN?
honest bicycle components
About THUN
Mobility is changing. Bicycles and e-bikes are becoming central to sustainable transportation.
At Alfred THUN GmbH, we develop bicycle drivetrain components and systems that convert human energy into forward motion.
More than a component manufacturer, THUN works with bicycle brands as a development and system partner, supporting engineering teams from concept to series production.
Purpose
THE RIDE STARTS HERE
We exist to spark (a) movement. It’s our purpose to drive transformation in order to create a future worth living – for our team members and their families, our shareholders, our community, our business partners, our industry, our democratic political system, and society at large.
MISSION
HONEST BICYCLE COMPONENTS
We develop and manufacture honest components for bicycles and e-bikes and market them along with related services to manufacturers and cyclists. At the same time, we promote cycling and its benefits within our culture and through association work and advocacy. We are committed to ensuring that it remains easily accessible and affordable for everyone.
Honest
APPROACHABLE
ACCOUNTABLE
QUALITY-MINDED
TRAILBLAZING
The ride starts here. Every single second makes a difference. You make a difference. Get on your bike—in the city, in the countryside, wherever. On any road, on any trail, in any weather. Just start moving. Start a movement. Set an example. Set boundaries. Be kind to others. Find balance. Screw perfection. Foster change. Embrace failure. Prioritize your health. Eat well. Work those muscles. Take breaks. Go dancing once in a while. Sit by a campfire. Spend time with family and friends. Watch the sunrise. Enjoy simplicity. Do what you are passionate about. Make it count.
make it yours
Company Profile
Alfred THUN GmbH is the global market leader in bottom brackets for bicycles and e-bikes. Founded in 1919, the family-run company operates its development and production facilities in Ennepetal, Germany. Today, THUN manufactures more than 50,000 bottom brackets per day for bicycle manufacturers worldwide.
Our expertise includes:
- Cartridge bottom brackets
- Square taper and hollow spindle systems
- System integration for modern e-bike drives
- Industrial manufacturing and supply reliability
With more than a century of engineering experience, THUN combines mechanical precision and scalable production to support bicycle manufacturers globally.