Praxis BB Shimano -T47 INTERNAL  85.5MM ROAD

Praxis T47 Internal Bottom Bracket for Shimano 85.5mm Road is designed for riders who want smooth performance, reliable power transfer, and long-lasting durability on modern road bikes. Built specifically for Shimano Hollowtech II road cranksets, this bottom bracket fits T47 internal bearing threaded road frames with an 85.5mm shell width.

Praxis combines precision machining with high-quality bearings to deliver excellent crank stability and efficient pedaling performance. The forged and heat-treated alloy cups provide strength while maintaining lightweight performance for road cycling applications. Available with cartridge steel or premium ceramic Enduro 2437 bearings, this bottom bracket ensures low friction and consistent rotation under demanding riding conditions.

The ceramic version features Grade 5 / ABEC 5 rated bearings for riders looking for maximum efficiency and smoother crank movement. Designed around Shimano 24mm spindle compatibility, this bottom bracket offers a secure fit and quiet operation for endurance rides, training, and competitive road cycling.

Perfect for performance-focused cyclists upgrading or replacing their road bike bottom bracket system.

Key Features

• Compatibility: Designed for Shimano Hollowtech II road cranksets

• Frame Standard: Fits T47 Internal Bearing threaded road frames

• Shell Width: 85.5mm road frame compatibility

• Bearing Options: Available in cartridge steel or ceramic bearings

• Ceramic Rating: Grade 5 / ABEC 5 ceramic bearing option

• Spindle Compatibility: 24mm drive side and 24mm non-drive side

• Construction: Forged and machined heat-treated alloy cups

• Performance: Smooth rotation with low friction performance

• Durability: Built for long-term road cycling reliability

• Operation: Quiet and stable pedaling efficiency

Product Specifications

• Product: Praxis Shimano T47 Internal Bottom Bracket

• Bottom Bracket Type: T47 Internal Bearing (I.B.)

• Frame Compatibility: T47 threaded internal bearing frames

• Crank Compatibility: Shimano Hollowtech II Road

• Shell Width: 85.5mm

• Bearing Type: Enduro 2437 cartridge bearings

• Bearing Options: Steel or Ceramic

• Ceramic Bearing Grade: Grade 5 / ABEC 5

• Spindle Size: 24mm

• Cup Material: Forged heat-treated alloy

• Application: Road bike drivetrain systems

Bearing Performance

• Low Friction Design: Improves pedaling efficiency during long rides

• Precision Bearings: Enduro bearings deliver smooth crank rotation

• Enhanced Durability: Built to handle regular road cycling use

• Stable Power Transfer: Reduces flex and improves drivetrain response

• Quiet Riding Experience: Minimizes unwanted bottom bracket noise

Easy Operation / Usage

• Install into compatible T47 internal threaded road frames

• Designed specifically for Shimano Hollowtech II road cranksets

• Suitable for professional workshop installation or experienced home mechanics

• Ensure proper torque settings during installation for best performance

• Compatible with 24mm Shimano road crank spindles

Why Choose This Product

• Premium Build Quality: Precision-machined alloy cups for strength and durability

• Reliable Compatibility: Engineered specifically for Shimano Hollowtech II systems

• Smooth Performance: High-quality bearings improve drivetrain efficiency

• Road Cycling Focused: Optimized for 85.5mm T47 road frames

• Trusted Brand: Praxis components are known for performance and reliability

• Upgrade Ready: Ideal for replacing worn bottom brackets or upgrading performance

In the Box

• Praxis T47 Internal Bottom Bracket

• Drive side cup

• Non-drive side cup

• Installed bearings

• Product documentation