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A black and orange Praxis 24MM T47 External Bottom Bracket

Praxis Bottom Brackets

Praxis 24MM T47 External Bottom Bracket

Eugene Cech May 15, 2026

Price range: $48.00 through $160.00

T47 external bottom bracket for 24 mm cranksets such as Shimano

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Praxis 24MM T47 External Bottom Bracket

The Praxis 24MM T47 External Bottom Bracket fits T47 frames that use 24 mm spindles, including Shimano Hollowtech II. It uses machined heat treated aluminum cups for strength and durability. Riders can choose steel or ceramic bearings to match their performance goals. This bottom bracket works with frames with T47 External 68 mm road shells and 73 mm mountain bike shells for wide compatibility.

 

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 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 M30 386EVO Bottom BracketSteel: $45 | Ceramic: $160Steel | CeramicFits 386EVO framesFits Praxis M30 (30 mm/28 mm) cranksets104 grams
Praxis 24MM T47 External Bottom BracketSteel: $45 | Ceramic: $160Steel | CeramicFits T47 road framesFits Shimano Hollowtech II cranksets104 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 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 External 68 mm and 73 mm shells
  • Crankset: Compatible with 24 mm cranksets, including Shimano Hollowtech II

Specs

  • Shell Width: 68 mm (Road) or 73 mm (MTB)
  • Shell Type: T47
  • Threading: Threaded
  • Axle Diameter: 24 mm
  • Weight: 104 grams
  • Cup Material: Aluminum

Tools Needed for Installation

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

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