Latest Products


New CHACHA Bottom Bracket

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…

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New BOLERO Bottom Bracket

BOLERO Bottom Bracket

BOLERO delivers efficient power transfer for racing and mountain bikes. It combines low weight with high stability under load. Made in Germany, its cold-forged, ZN-coated (A2B) steel spindle, composite sleeve, and composite cups deliver strength without adding weight. The…

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New RUMBA Bottom Bracket

RUMBA Bottom Bracket

RUMBA connects cranksets with 24 mm spindles to the frame smoothly and reliably. It combines extremely lightweight composite components with sealed 2RS ball bearings for low-friction pedaling and easy maintenance.  Made in Germany, the RUMBA bottom bracket is designed for…

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FAQS

RUMBA is the better fit when a bike design uses cranksets with integrated 24 mm spindles instead of square taper. It combines THUN reliability with lightweight composite cups, exchangeable external ball bearings, and a lower material footprint.

BOLERO combines one of the lightest square taper designs on the market with proven THUN reliability. This means it reduces weight while keeping a familiar interface for performance-focused bikes.

CHACHA uses composite cups, a composite sleeve, diameter reduction rings and spacers to help reduce overall system weight.


Your Contact at THUN

Have questions about one of our new products? Our sales and engineering teams are here to help you. 

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Carina Füllbeck

Carina Füllbeck

Vice President Sales