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Description
The CeramicSpeed T47/68 External Shimano 24mm Bottom Bracket is designed for frames with a 68mm wide T47 Outboard shell, combining the oversized stiffness of PF30 and EVO386 with the creak-free reliability of a threaded interface. Originally developed by custom frame builders, the T47 standard features a 47mm inner diameter and threaded cups for secure installation and long-term performance.
This bottom bracket places the bearings outside the frame shell, making it ideal for road, gravel, and cyclocross bikes using the T47/68 outboard standard. The oversized design improves power transfer and stiffness, while the threaded interface ensures easier maintenance and a more dependable fit.
Coated bearings feature ultra-smooth CeramicSpeed balls and hardened-steel races, offering low friction and long-lasting performance. It also includes a 3-micron-thick metallic coating on the races for increased durability, reduced drag, and extended lifespan—ideal for riders seeking maximum efficiency and reliability.
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Important Update for Our Canadian Customers
We regret to inform you that shopping on Sigma Sports is temporarily unavailable for customers based in Canada.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our Canadian community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team