Why T47 Bottom Brackets Are Taking Over: What Cyclists Need to Know
- Bike Bearing Store Team
- Jun 28
- 3 min read
Updated: Sep 21
If you're shopping for a high-performance bike upgrade or looking into bottom bracket options, you’ve likely seen the term T47. But what exactly is T47, and why is it becoming the preferred choice for so many serious riders?
What is T47?
T47 is a modern bottom bracket standard that blends the best of both worlds: the oversized shell and stiffness of press-fit systems, and the reliability of threaded designs. With a 47 mm internal diameter and precision threading, T47 allows for larger bearings, better alignment, and a creak-free riding experience.
It’s designed to accommodate today’s most common crank spindle sizes like 30 mm, DUB, GXP, and 24 mm Shimano systems.
Why T47 is Worth Considering
More and more high-end bikes are shipping with T47 frames for good reasons:
No more creaking – Threaded interface prevents movement and noise.
Supports oversized cranks – Works with 30 mm, DUB, and more.
Stiff and efficient – Wide shell improves power transfer.
Easier maintenance – Install and remove with common tools, no pressing needed.
What Frames Use T47?
You’ll now find T47 used across premium road, gravel, and MTB bikes, including:
Brand | Model(s) | Category |
Trek | Émonda, Domane, Madone, Crockett | Road, Gravel |
Colnago | C68 | Road |
Factor | Ostro VAM, O2, Slick | Road |
Cervélo | Soloist, Áspero | Road, Gravel |
Scarab | Páramo | Gravel |
Parlee | Z-Zero GT | Road |
Litespeed | Custom builds (optional T47 upgrade) | Road, Gravel |
Wittson | DEVA (Titanium) | Road |
Standert | All models | Road, Gravel |
Ibis | Hakka MX | Gravel |
Pearson | Shift | Aero Road |
Look | 795 Blade RS, 765 Optimum, Huez 785 | Road |
Cloud Bicycle Co | All-Road Series, Adventure Series | Road, Gravel, Adventure |
T47 comes in both inboard (bearings sit inside the shell) and outboard (bearings sit outside) versions, with various shell widths (e.g., 68, 73, 86 mm).
T47A (T47 BBright) bottom bracket is a specialised variant of the T47 threaded standard, designed to accommodate asymmetrical frame (77mm width frame) designs, particularly those from brands like Cervélo, Factor, and Felt.
Shop T47 Bottom Brackets at BikeBearingStore.com.au
At BikeBearingStore.com.au, we offer a wide selection of T47 bottom brackets featuring Aita Ceramic™ high-performance bearings.
T47/68 Outboard Bottom Bracket for 30mm Note: "68" is the width of the T47 frame (68mm), and since the bottom bracket sits outside of the frame, it is referred to as ‘Outboard’ or ‘EX’.
Note: "86" is the width of the T47 frame (86mm), and since the bottom bracket sits inside of the frame, it is referred to as ‘Inboard’ or ‘IN’.
Note: It is for a T47 frame with 77/79mm asymmetrical shell, and one side of the bottom bracket sits inside the frame, and another side is outside of the frame.
Whether you’re riding Shimano, SRAM, or DUB, we have the right T47 bottom bracket to fit your frame and crankset.
Final Thoughts
It’s the standard that solves the common creaking issues of press-fit while maintaining compatibility with today’s most advanced drivetrains.
If you're upgrading your bike or building a new one, don’t overlook the benefits of a ceramic T47 bottom bracket — you’ll feel the difference with every pedal stroke.
Have questions? Contact us anytime at info@bikebearingstore.com.au
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