Wheels Manufacturing T47 Outboard Bottom Bracket
Best threaded upgrade for cyclists running Shimano 24mm cranksets.
This threaded bottom bracket brings the reliability of traditional external cups to modern T47 frames. It trades the sleek, hidden look of press-fit systems for superior durability and ease of maintenance, making it the smart choice for riders who prioritize long-term performance over aesthetics.
$131.99
More Outboard Bottom Bracket options
Who it's for
- Mechanics who prefer serviceable parts for long-term reliability
- Cyclists tired of persistent creaking from press-fit systems
- Riders wanting to install standard Shimano cranks on T47 frames
Who should skip it
- Budget-conscious riders seeking the most affordable replacement option
- Performance racers demanding the lowest possible rolling resistance
- Home mechanics lacking specialized large-diameter bottom bracket tools
Performance breakdown
Bearing Durability
Enduro ABEC-3 bearings offer exceptional longevity and smooth rotation under load.
Installation Simplicity
Standard threaded design makes installation straightforward for any home mechanic.
Build Quality
Precision-machined aluminum construction ensures a robust, creak-free interface.
Serviceability
Outboard design allows for easy bearing access, cleaning, and replacement.
Compatibility Range
Perfectly optimized for 24mm Shimano spindles across various shell widths.
Frame Integration
T47 threading provides a secure, stable fit for modern frames.
Key Specs
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T47 Outboard Threaded
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Machined Aluminum
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Enduro Bearings (Serviceable/Replaceable)
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68mm to 100mm
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24.00mm (e.g., Shimano HollowTech II)
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Drive side: Left-hand thread; Non-drive side: Right-hand thread
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