ACS Crossfire External BB Set
Best durable component for reliable bicycle drivetrain performance.
This specialized tool is essential for servicing specific freewheel systems. It provides the precise engagement needed to remove or install components without damaging the splines or the axle. It is a straightforward, durable solution for home mechanics looking to maintain their drivetrain with confidence and ease.
$54.02
at
Eugene Electric Bicycles
Who it's for
- Cyclists seeking a long-lasting, reliable bottom bracket for aggressive riding.
- Riders prioritizing maximum pedaling efficiency and responsive power output.
- Home mechanics and riders who prefer straightforward bicycle component upkeep.
Who should skip it
- Weight-conscious racers and ultralight build enthusiasts seeking every gram saved.
- Builders with older frames or non-standard cranksets needing specific fitments.
- Riders sensitive to bike noises or those who neglect regular component checks.
Performance breakdown
Drivetrain Stiffness
Forged aluminum construction provides a rigid platform for efficient power transfer.
Bearing Smoothness
High-quality sealed bearings deliver consistent, low-friction rotation under load.
Installation Ease
Standard BSA threading makes this a straightforward swap for most frames.
Weather Protection
Sealed design keeps trail grit out, though it lacks specialized weatherproofing.
Compatibility Range
Works seamlessly with the ubiquitous Shimano Hollowtech II standard.
Structural Durability
CNC-machined aluminum offers a robust, long-term solution for daily riding.
Key Specs
Material
Aluminum
Bottom Bracket Standard
BSA Threaded
Spindle Diameter
24 mm
Shell Width
68/73 mm
Thread Specification
BSA 1.37 inch x 24T
Spindle Interface Type
Shimano Hollowtech II
Bearing Type
Sealed
Serviceable Bearings
No
Ceramic Bearings
No
Compatibility
2-piece cranks
Know before you buy
Still have a question?
Ask Metto anything about the ACS Crossfire External BB Set before you decide.
