Description Report Item ZRACE 2024’s newly upgraded DUB bottom bracket adopts the same manufacturing process as SRAM, which greatly improves the compatibility with the frame bottom bracket. Upgraded bearings are more durable and waterproof. The durability is increased by more than 45% than the old model, and the failure rate is reduced by 75%. Brand: ZRACE Material: aluminum alloy + plastic Structure: Bearing Scope of application: Compatible with SRAM DUB crank, and 29mm shaft crank

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