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A black Praxis M30 Thru T47 Inboard Bottom Bracket with blue seals.

Praxis Bottom Brackets

Praxis M30 Thru T47 Inboard Bottom Bracket

Power Meter City August 19, 2025
5.00 out of 5 based on 1 customer rating
(1 customer review)

$49.50

T47 inboard bottom bracket for 30 mm cranksets

A 10% Tariff Surcharge applies to this product, as required by the manufacturer. To keep things simple, this amount is already included in the listed price—no surprise at checkout.

Only 2 left in stock – Ships Monday!

An angled view of two black Praxis M30 Bottom Bracket Socket Tools against a white background.
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Praxis M30 Thru T47 Inboard Bottom Bracket

The Praxis M30 Thru T47 Inboard Bottom Bracket is made for 30 mm spindles. It uses steel bearings and features machined heat-treated aluminum cups. It is made for frames that can accept a T47 inboard bottom bracket, meaning the bearings sit within the frame.

This bottom bracket requires the Praxis T47 I.B. Shimano Tool for installation and removal.

 

Praxis Bottom Bracket Comparison 

ModelPriceBearingsShellCranksetsWeight
Praxis M30 BSA Threaded Bottom BracketSteel: $45 | Ceramic: $160Steel | CeramicFits BSA (English) threaded 68/73 mm shellsFits Praxis M30 (30 mm/28 mm) cranksets100 grams
Praxis M30 Road BB30/PF30 68MM Bottom BracketSteel: $75 | Ceramic: $185Steel | CeramicFits BB30 and PF30 68 mm road shellsFits Praxis M30 (30 mm/28 mm) cranksets130 grams
Praxis M30 T47 Inboard Bottom BracketSteel: $45 | Ceramic: $160Steel | CeramicFits T47 road framesFits Praxis M30 (30 mm/28 mm) cranksets100 grams
Praxis Shimano T47 Inboard Bottom BracketSteel: $45 | Ceramic: $160Steel | CeramicFits T47 road framesFits Shimano Hollowtech II cranksets104 grams
Praxis M30 BB86/BB90/BB92 Bottom BracketSteel: $45 | Ceramic: $160Steel | CeramicFits PF 41 mm bottom bracket shellsFits Praxis M30 (30 mm/28 mm) cranksets65 grams
Praxis Shimano Road BB30/PF30 68MM Bottom BracketSteel: $75 | Ceramic: $185Steel | CeramicFits BB30 and PF30 68 mm road shellsFits Shimano Hollowtech II cranksets130 grams
Praxis M30 Thru BSA Threaded Bottom Bracket$45SteelFits BSA (English) threaded 68/73 mm shellsFits 30 mm spindles100 grams
Praxis M30 Thru BB86/BB90/BB92 Bottom Bracket$45SteelFits PF 41 mm bottom bracket shellsFits 30 mm spindles65 grams
Praxis M30 Thru T47 Inboard Bottom Bracket$45SteelFits T47 road framesFits 30 mm spindles100 grams
Praxis M30 Thru Road BB30/PF30 68MM Bottom Bracket$75SteelFits BB30 and PF30 68 mm road shellsFits 30 mm spindles130 grams

Compatibility

  • Shell: Compatible with T47 road shells
  • Crankset: Fits cranks that use a 30 mm spindle

Specs

  • Shell Width: 85.5 mm
  • Shell Type: T47
  • Threading: Threaded
  • Axle Diameter: 30 mm
  • Weight: 100 grams
  • Cup Material: Aluminum

Tools Needed for Installation

You will need the following tool for installation of this product.

1 review for Praxis M30 Thru T47 Inboard Bottom Bracket

  1. Ryan (verified owner) –

    Highly recommend, and a relatively straight forward task if you’re considering the upgrade; do it!

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