Theory American BMX Bottom Bracket Kit
Best durable upgrade for riders seeking smooth and reliable bearing performance.
A straightforward upgrade for vintage frames, this kit swaps out outdated loose-ball bearings for modern, sealed units. It is the essential fix for riders looking to improve drivetrain smoothness and reliability without replacing their frame.
$34.95
at
Albe's BMX
More American Bottom Bracket options
Who it's for
- Riders seeking a low-maintenance upgrade for smoother pedaling performance
- Aggressive street and park riders who demand long-lasting hardware
- Vintage bike enthusiasts wanting modern reliability on classic frames
Who should skip it
- Home mechanics without access to a professional bearing press
- Weight-conscious riders looking to minimize their total bike mass
- Owners of modern professional-grade frames requiring different sizing
Performance breakdown
Rotation Smoothness
Sealed bearings eliminate the gritty drag common in loose-ball setups.
Installation Simplicity
Requires a press tool, but fits standard American shells without fuss.
Maintenance Intervals
Sealed design keeps dirt out and grease in for longer rides.
Build Durability
Aluminum cups offer a robust, reliable housing for high-impact riding.
Compatibility Range
Dual spindle options cover the most popular modern BMX crank standards.
Aesthetic Finish
Anodized colorways provide a clean, custom look for any frame build.
Key Specs
Bottom Bracket Standard
American
Bearing Type
Sealed
Compatibility
19mm and 22mm spindles
Material
Aluminum cups
Bearing Count
2
Know before you buy
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Ask Metto anything about the Theory American BMX Bottom Bracket Kit before you decide.
