PF30A Hollowtech II Thread Together Bottom Bracket
Best reliable adapter for cyclists installing Shimano cranks on PF30A frames.
Upgrade your bike's drivetrain with the Wheels Manufacturing PF30A Hollowtech II Bottom Bracket. Expertly crafted in the USA, this component seamlessly adapts your PF30A frame for a Shimano Hollowtech II crankset. It features a secure thread-together design for a stable connection and includes high-quality, replaceable Enduro bearings for exceptionally smooth and durable performance. The outboard bearing design enhances overall drivetrain stability, making it a smart choice for cyclists seeking precision and longevity.
$167.00
Owner Satisfaction
4.7
/ 5
Category Rank
68
/ 2101
#68 in Components
Price vs Category Average
+62%
Above average
BB Shell Width
73
/ mm
Who it's for
- Cyclists tired of annoying creaks and frame noise
- Riders seeking long-term reliability and fewer maintenance headaches
- Performance enthusiasts prioritizing drivetrain efficiency and smooth pedaling
Who should skip it
- Budget-conscious riders looking for an affordable replacement part
- Home mechanics lacking specialized bottom bracket installation tools
- Weight-obsessed racers chasing every gram of bike savings
Performance breakdown
Bearing Smoothness
Enduro bearings deliver a buttery, low-friction rotation for efficient power transfer.
Installation Stability
Thread-together design eliminates common creaking issues found in press-fit systems.
Build Precision
American-made machining ensures a perfect fit within the PF30A shell.
Maintenance Ease
Replaceable bearings significantly extend the lifespan of the entire unit.
Drivetrain Rigidity
Outboard bearing placement provides a stiff, stable platform for hard pedaling.
Compatibility Versatility
Seamlessly bridges the gap between specialized frames and standard Shimano cranks.
Key Specs
BB Shell Width
73 mm
BB/Frame Interface
PF30A
Spindle Interface Type
Shimano Hollowtech II
Bottom Bracket Shell I.D.
46 mm
Defined Color
Black
Weight
158 g
Model Number
PF30A-OUT-SHIM
Features
- Converts PF30A frames for Hollowtech II spindles
- Secure thread-together installation
- Replaceable Enduro bearings
- Made in the USA
- Outboard bearing design for stability
What customers say
Cyclists overwhelmingly praise this bottom bracket for effectively eliminating the notorious creaking common with press fit systems. The thread together design creates a secure, stable interface, resulting in a significantly quieter ride. Users consistently note the robust build quality, featuring precision machined cups and high quality bearings that deliver excellent durability and a remarkably smooth pedaling feel. While the initial cost is higher, the product offers superior long term value by solving a persistent problem reliably. The peace of mind and enhanced riding quality strongly justify the investment for many users, making it a highly recommended, well engineered solution.
Know before you buy
Yes, this model is specifically engineered for frames with a 46mm PF30A bottom bracket shell width of 73mm. It is designed to bridge the gap between that specific frame interface and Shimano Hollowtech II cranksets.
The thread-together design allows the two halves of the bottom bracket to lock securely into each other. This prevents the creaking often associated with standard press-fit systems and ensures a more stable, reliable connection.
Yes, this bottom bracket features replaceable Enduro bearings. When the time comes for maintenance, you can swap out the bearings rather than replacing the entire unit.
No, this specific model is designed exclusively for Shimano Hollowtech II spindles. It will not be compatible with cranksets using different spindle diameters or standards.
You will need a bottom bracket wrench compatible with the external notches on the cups to tighten the two halves together. Because it is a thread-together system, it is much easier to install accurately than a traditional press-only unit.
Still have a question?
Ask Hayley anything about this product before you decide.