Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm

Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm

$45.00 NZD
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Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm
  • Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm
  • Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm
  • Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm
  • Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm
Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm

Shimano Bottom Bracket (HOLLOWTECH II) SM-BB72-41B Press-Fit type 86.5 mm

$45.00 NZD
Taxes included. Shipping calculated at checkout.

The Shimano SM-BB72-41B Press Fit Bottom Bracket is a reliable Ultegra-level BB86 replacement part designed to deliver smooth pedalling, efficient power transfer and long service life for Shimano Hollowtech II road bikes ridden across Brisbane, Queensland and Australian road conditions.

SM-BB72-41B Features

  • Genuine Shimano press-fit bottom bracket for BB86 / PF41 road frames
  • Designed for Shimano Hollowtech II 24mm road cranksets
  • Reliable Shimano bearings and seals for long service life
  • Lightweight 69g average weight for performance road builds

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SKU: SM-BB72-41B
Barcode: 689228122567
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Key Features & Technical Specifications

Technical Specifications

  • Product Name: Shimano SM-BB72-41B Bottom Bracket
  • Product Type: Press-fit road bottom bracket
  • Model Number: SM-BB72-41B
  • Series Level: Shimano Ultegra / Shimano road component family
  • Bottom Bracket Standard: BB86 / PF41 road press-fit
  • Frame Shell Width: 86.5mm
  • Frame Shell Internal Diameter: 41mm
  • Crank Compatibility: Shimano Hollowtech II road cranksets
  • Spindle Compatibility: 24mm Shimano crank spindle
  • Bearing Type: Small ball bearing design
  • Installation Type: Press-fit
  • Average Weight: Approximately 69g
  • Colour: Shimano series colour
  • Recommended Use: Road cycling, endurance road, racing, fast bunch rides, commuting, indoor training and drivetrain servicing
  • Best Bike Type: Road bikes, endurance bikes, aero road bikes, lightweight climbing bikes and Shimano-equipped performance bikes using BB86 shells
  • Main Upgrade Purpose: Bottom bracket replacement, smoother pedalling, drivetrain refresh, creak repair and crank bearing service

Compatibility Notes

  • Designed for frames using an 86.5mm wide press-fit BB86 / PF41 shell.
  • Designed for Shimano Hollowtech II 24mm road cranksets.
  • Commonly used with compatible Shimano Ultegra, 105, Dura-Ace and Tiagra road cranksets.
  • Not compatible with SRAM DUB, SRAM GXP, BB30, PF30, BB386EVO, square taper, ISIS, Octalink or threaded BSA frames.
  • Professional installation is recommended because press-fit bottom brackets require correct tools, alignment and frame inspection.
Notable Tech, Materials & Construction

Shimano Hollowtech II Compatibility

The SM-BB72-41B is built for Shimano Hollowtech II road cranksets, which use a 24mm spindle to balance stiffness, low weight and smooth rotation. When matched with a compatible crankset, it supports efficient power transfer and stable pedalling under load.

Press-Fit BB86 Construction

This bottom bracket presses directly into compatible BB86 / PF41 road frame shells. The press-fit format allows frame manufacturers to use a wider bottom bracket area, supporting frame stiffness and clean road bike design.

Reliable Shimano Bearings and Seals

Shimano designed the SM-BB72-41B with reliable bearings and seals to support long service life. Good sealing is especially important for riders dealing with wet roads, sweat, indoor trainer use, road grime and high weekly kilometres.

Small Ball Bearing Design

The small ball bearing construction helps keep weight low while maintaining smooth rotation. This supports a refined road bike feel without adding unnecessary bulk.

Lightweight 69g Average Weight

At approximately 69g, the SM-BB72-41B is light enough for performance road bikes while remaining practical and durable for regular training and endurance use.

Genuine Shimano Service Part

Using a genuine Shimano bottom bracket helps maintain correct crank fit, bearing alignment and drivetrain feel. It is a smart choice when replacing worn, contaminated or noisy press-fit bearings.
Size, Fit, Geometry & Measurements

Bottom Bracket Fitment

  • Frame Standard: BB86 / PF41 road press-fit
  • Frame Shell Width: 86.5mm
  • Frame Shell Internal Diameter: 41mm
  • Crank Spindle Diameter: 24mm Shimano Hollowtech II
  • Installation Style: Press-fit
  • Average Weight: Approximately 69g

Fit Checklist Before Purchase

Before ordering, confirm:

  • Your frame uses a BB86 / PF41 road bottom bracket shell.
  • Your shell width is 86.5mm.
  • Your frame shell internal diameter is 41mm.
  • Your crankset uses a Shimano Hollowtech II 24mm spindle.
  • Your crank is not DUB, GXP, BB30, PF30, square taper, ISIS or Octalink.
  • Your frame shell is clean, round and undamaged.
  • You have the correct press-fit installation tools or workshop support.

Installation Notes

  • Remove the old bottom bracket with the correct press-fit extraction tool.
  • Inspect the shell for wear, ovalisation, contamination or carbon damage.
  • Clean the shell before pressing in the new cups.
  • Use correct BB86 press drifts to avoid damaging the cups or frame.
  • Refit the crankset and set preload correctly.
  • Check for smooth rotation, no side play and correct front shifting.
Who it is best suited for and where it is best suited

The Shimano SM-BB72-41B is best suited to riders who need a genuine, smooth and reliable replacement bottom bracket for a Shimano Hollowtech II road bike with a BB86 press-fit frame.
Industry Feedback, Rider Reviews and our own opinion
Product Care & Warranty Info

Product Care

  • Avoid pressure washing directly around the bottom bracket.
  • Keep the bottom bracket area clean after wet or gritty rides.
  • Check for crank play, clicking, creaking or rough rotation during servicing.
  • Set Shimano crank preload correctly after installation.
  • Inspect the frame shell when replacing the bottom bracket.
  • Use correct press-fit tools for installation and removal.
  • Replace if bearings feel gritty, loose, seized or noisy.
  • Keep the chain, pedals and drivetrain maintained to avoid misdiagnosing noises.
  • Check indoor trainer bikes for sweat corrosion around the bottom bracket area.
  • Have persistent drivetrain noises professionally diagnosed.

Warranty Information

  • Warranty coverage is subject to Shimano or retailer terms and conditions.
  • Warranty generally applies to manufacturing defects in materials or workmanship.
  • Normal bearing wear, contamination, incorrect installation, poor frame tolerances, pressure washing damage, crash damage and misuse are generally not covered.
  • Bottom bracket lifespan depends on installation quality, frame shell condition, weather exposure, cleaning habits, crank preload and service frequency.
  • Professional installation is recommended for correct fitment, bearing alignment, crank setup and long-term reliability.
Stock Reference
Product SKU
  • Default Title: SM-BB72-41B
Barcode (GTIN/EAN)
  • Default Title: 689228122567

Shimano

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