The ride starts here.
What’s new?
TAICHUNG BIKE WEEK 2026
Our team is attending TAICHUNG BIKE WEEK 2026, Sept 15–18. We can't wait to connect with customers and partners, showcase our latest developments, scout trends and gather inspiration. Meet us at: Evergreen Laurel Hotel, 2nd Floor, Booth no. H4
CHACHA Bottom Bracket
THE RIDE STARTS HERE. Think outside the square. The ChaCha bottom bracket: lightweight, efficient, built from recycled materials — and built to last. See it in action at out booth at TAICHUNG BIKE WEEK 2026.
KUNUNU Top Employer
THUN has been named Kununu Top Employer 2026. Based on feedback from our own team, the award reflects what shapes everyday work in Ennepetal: shared knowledge, real responsibility and bicycle components built for riders around the world.
honest bicycle components
About thun
For more than 100 years, THUN has been developing and manufacturing bicycle components in Europe. We focus on the parts and systems that turn pedal power into movement and help make every ride feel stable and reliable. From city bikes to e-bikes, THUN delivers drivetrain components that fit the way bicycles are built today. With decades of expertise in bottom brackets, cranksets and OEM requirements, we help manufacturers build with confidence.
CHACHA Bottom Bracket
CHACHA is a press fit bottom bracket designed for cranksets with an integrated 24 mm crank spindle. Its composite construction keeps system weight low while offering defined compatibility across city and trekking, mountain, and racing bicycle applications. Composite cups, a…
View productcatalogue
WORTH A CLOSER LOOK
Want to learn more about our products? Then take a look at all of them and our current catalogue.
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.