Praxis Shimano BB30/PF30 MTN Conversion Bottom Bracket - 73mm
Bottom Brackets
Praxis Shimano BB30/PF30 MTN Conversion Bottom Bracket - 73mm
Praxis Shimano BB30/PF30 MTN Conversion Bottom Bracket - 73mm
The Praxis Shimano BB30/PF30 MTN Bottom Bracket lets you run a Shimano Hollowtech II mountain crank in a press-fit BB30 or PF30 73mm mountain frame, giving you a proper, creak-free interface instead of a workaround. Read the overview
At a glance
- Crank Compatibility
- Shimano Hollowtech II MTN
- Frame Shell
- BB30 / PF30
- Width
- 73mm (MTB)
- BB30 Measurement
- 73mm x 42mm diameter
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Overview
What does the Praxis Shimano BB30/PF30 MTN conversion bottom bracket do?
The Praxis Shimano BB30/PF30 MTN Bottom Bracket lets you run a Shimano Hollowtech II mountain crank in a press-fit BB30 or PF30 73mm mountain frame, giving you a proper, creak-free interface instead of a workaround. The cups are forged and machined from heat-treated 7075-T6 aluminum, and the bracket is built precisely to Shimano mountain bearing stance and chain line spec so your crank sits exactly where it should. Fully sealed Enduro 2437 steel cartridge bearings handle the dirt, water, and side loads of real trail riding and make this a dependable replacement for a worn or noisy factory BB.
This is the steel-bearing version for 73mm BB30 and PF30 mountain frames, and it includes a sleeve for PF30 installation. It is built around the Praxis Collet design for a secure, stable fit. Note it is for Shimano Hollowtech II steel-spindle MTN cranks only, not road cranks, and it is not compatible with Cannondale BB30a or PF30a frames. Installation calls for two 16-notch outboard BB tools and a press tool. Best for mountain riders and mechanics converting or refreshing a press-fit frame who want a precise, long-lasting Shimano-compatible bottom bracket.
All the specs
13 specs in 3 groups. Open a group, or expand them all.
Sensors and connectivity2 specs
- Crank Compatibility
- Shimano Hollowtech II MTN (24mm steel spindle)
- Not Compatible
- Road cranks, Cannondale BB30a/PF30a, 68mm shells, BBRight, BB386EVO, BB86, BB92
Build and box5 specs
- Cup Material
- Forged, machined heat-treated 7075-T6 aluminum
- Color
- Black
- Weight
- 140g
- Warranty
- 2 years
- MPN
- 73-3001R
Other details6 specs
- Frame Shell
- BB30 / PF30
- Width
- 73mm (MTB)
- BB30 Measurement
- 73mm x 42mm diameter
- PF30 Measurement
- 73mm x 46mm diameter (sleeve included)
- Bearings
- Enduro 2437 sealed steel cartridge (24mm drive and non-drive)
- Design
- Praxis Collet
FAQ
Good questions
What frames does this fit?
It fits 73mm mountain frames with a BB30 or PF30 shell. It includes a sleeve for PF30 installation. It is not for BBRight, BB386EVO, BB86, or BB92 frames, and 68mm road shells are not supported by this version.
Can I use it with a road crank?
No. This version is for Shimano Hollowtech II steel-spindle mountain cranks only. It cannot be used with road cranks.
Does it work with Cannondale BB30a or PF30a frames?
No. It is not compatible with Cannondale proprietary BB30a or PF30a frames. The frame shell also cannot have inner obstructions like cable guides or screws that block the BB from seating.
What tools do I need to install it?
Installation requires two 16-notch outboard BB tools with a 44mm inner diameter, plus a press tool or drift. Follow the Praxis manual for exact steps.
Is this the steel or ceramic version?
This listing is the steel cartridge bearing version (Enduro 2437). Praxis also makes a ceramic version, which is a separate product.
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