CeramicSpeed T47a Shimano Bottom Bracket

The CeramicSpeed T47a Shimano Bottom Bracket is built for riders who want the lowest friction, maximum power transfer and industry-leading durability. Designed for 77 mm asymmetrical T47a shells, it brings the reliability of a threaded interface with the oversized benefits of BBright-style designs.

Engineered for the 77 mm Asymmetrical Standard: T47a frames position the non-drive side bearing inside the frame and the drive-side bearing externally, creating a stable, highly efficient structure. This setup enhances stiffness and ensures smooth rotation, making it ideal for modern performance road platforms using Shimano 24 mm crank spindles.

Hand-Built Bearings for Ultimate Efficiency: Each bottom bracket is equipped with CeramicSpeed’s hand-built bearings, delivering unmatched smoothness and long-lasting performance. These bearings are engineered to minimize friction and withstand contamination, offering a significantly longer lifespan than standard bottom brackets.

Precision Dust Covers for Full Protection: Specially designed dust covers ensure a snug fit that protects the bearings from dirt, moisture and road grime. This added sealing enhances performance longevity, allowing the bottom bracket to maintain smooth rotation across demanding riding conditions.

The T47a Shimano bottom bracket installs securely using the CeramicSpeed Dual Socket Tool T45/T47 16-notch (52.2 mm) interface.

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.