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The BB4129SR is a lightweight and durable press fit bottom bracket designed for BB86 / BB89.5 / BB92 frames (Ø41mm) and SRAM DUB cranksets (28.99mm spindle).
It features Premium bearings, a waterproof plastic center sleeve, and TOKEN’s patented Fusion Construction to reduce creaking and improve frame fit. Enhanced with X-Seal technology, this bottom bracket offers excellent protection against water and dirt while maintaining low friction. At just 68 grams, it’s a reliable upgrade for riders seeking smooth, quiet, and long-lasting performance.
Features
- Premium Bearings: Premium Bearings are our high carbon steel bearings.
- X-Seal: TOKEN’s X-Seal technology keeps bearings protected from dirt and water, with very little friction for a free-spinning bearing.
Specifications
- Frame Type: BB86 / BB89.5 / BB92 (dia.41x86.5/89.5/92)
- Crank Type: SRAM DUB(dia.28.99)
- Bearing Type: Premium
- Colours: Black
- Weight: 68 g / set
- Bearing Size: dia.41x29xH18mm