Our Shimano BB30/PF30 73mm MTN BB. It is compatible with Shimano™ Hollowtech II MTN cranks. High-grade Enduro 2437 steel bearings are fully sealed and are a fantastic replacement BB for your Shimano™ drivetrain.
SPECIFICATIONS | |
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PRODUCT | SHIMANO BB30/PF30 MTN BB For use only with Shimano™ Hollowtech II MTN cranks in a BB30/PF30 73mm MTN frame See photos and Manual! |
BUY THIS IF : | You are installing a Shimano™ Hollowtech II MTN crank into a 73mm width BB30 or PF30 MTN frame. |
MEASUREMENT | BB30 - 73mm Width MTN x 42mm Diameter PF30 - 73mm Width MTN x 46mm Diameter (Included Sleeve for PF30) Helpful frame shell guide here |
BEARINGS | Cartridge Steel or Ceramic | Enduro 2437 These are specifically made for use with Shimano Hollowtech II crank spindles. Ceramic version is Grade 5 / ABEC 5 rating 24mm Drive and a 24mm NonDrive Bearing |
TOOL | This Shimano BB30/PF30 BB requires TWO 16 notch traditional BB tools along with a press tool/drift for installation. Use any standard outboard cup BB tool with 16 external notches and a 44mm ID Please read and follow instruction manual carefully for exact installation steps. |
MFG | Forged & machined heat-treated alloy cups |
INTRUCTIONS | MANUAL HERE |
AVG. WEIGHT | 140g |
NOTE | - Praxis Collet Design - Made precisely to Shimano MTN bearing stance spec. - This BB CANNOT be used for Road Cranks - This BB IS NOT compatible with the proprietary Cannondale "BB30a" or "PF30a" frames. - Frame shell cannot have any inner shell obstructions (like cable guides/screws) that prevent BB from installing. |




Praxis warrants components to be free from defects in materials or workmanship for a period of 2 years after original purchase to the original owner.
However, there are limitations such as normal wear and tear…as “nothing lasts forever” so please read our full Warranty.

PROCESSING – Orders placed after 12:00pm M-F are processed/shipped the next business day. Also, any orders placed over a weekend or holiday will be processed and shipped the next business day. We ship with Fed Ex and charges are calculated in your shopping cart at checkout.
30 DAY / RETURNS – At Praxis, we are a core group of riders that believe you should be completely satisfied with the purchase you have made. Should an item purchased through the Praxis Online Store fail to meet your expectations, we will gladly accept its return within 30 days of original purchase date. WEB RETURNS