- For more than 100 years Thun has been producing and distributing components for bicycles. The family business particularly focuses on transmission parts such as bb-sets and sensor technology for e-bikes. With highly efficient processing, Thun produces more than 50,000 units per day. Thun is distributed worldwide and has become one of the world's market leaders due to its superior technology. This bottom bracket is designed for mountain bikes in mind. A carbon composite is implemented into these, meaning no grease is needed to attach to your frame, and will work exactly how you want it to, this also means no seizing. Perfect for frames with damaged threads, these bottom brackets attach with ease. **Specifications** * ISO 4210-8 mountain bikes * For spindles with a diameter of 24mm * Compatible BB- housing 68, 73mm * 2RS Ball bearings * Composite sleeve * Composite cups RUMBA is designed to pass certification tests as per this standard whereas additional certification tests possibly need to be repeated with cranksets/spindles.
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