Chris King ThreadFit™ T47 24i Bottom Bracket

Name: Chris King ThreadFit™ T47 24i Bottom Bracket
Brand: Chris King
Price: 484.0 NZD
Availability: InStock

$484.00 NZD

A fully serviceable upgrade that combines the stiffness of a large T47 shell with quiet threaded installation and exceptionally smooth in-house bearings, making it ideal for high-mileage Australian road, gravel and endurance bikes.

Chris King ThreadFit T47 24i BB Features

Fits internally mounted T47 shells in 86mm and 92mm widths with compatible 24mm crank spindles
Chris King angular-contact bearings are manufactured in-house for low drag, precise adjustment and long service life
Threaded construction delivers secure, quiet installation with the stiffness benefits of an oversized bottom bracket shell
Bearings can be opened, cleaned and repacked instead of replacing the entire bottom bracket
Engineered, manufactured and assembled in Portland, Oregon, with a Chris King lifetime warranty

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More Product Details:

Bottom Bracket Standard: T47 internal

Shell Width Compatibility:

86mm
86.5mm on compatible road frames where permitted by the frame and Fit Kit specification
92mm

Crank Spindle Compatibility:

24mm crank spindles with the correct Fit Kit
Shimano Hollowtech II road and compatible 24mm cranksets when configured correctly
Selected stepped 24mm crank spindles with the appropriate Chris King Fit Kit

Bearing Options:

Stainless-steel angular-contact bearings
Ceramic-bearing upgrade, depending on colour and regional availability

Bearing Type:

Sealed angular-contact bearings
Designed and manufactured in-house by Chris King
Adjustable and fully serviceable

Cup Material: Precision-machined aluminium

Installation Type: Threaded internal cups

Thread Standard: T47

Installation Tool: Chris King bottom bracket cup tool required

Fit Kit Requirement: A compatible Chris King Fit Kit is required

Recommended Fit Kit for Standard 24mm Cranksets:

Chris King Fit Kit #4 for many Shimano-style 24mm crank spindles
Exact Fit Kit must be verified against the crank, frame and shell width

Compatibility Notes:

The Chris King ThreadFit T47 24i Bottom Bracket is intended for internal-bearing T47 shells, not external-bearing T47 shell configurations.
Confirm shell width, thread format and crank spindle dimensions before purchase.
A Fit Kit is required to correctly position, seal and preload the crank system.
It is not a direct replacement for BSA, BB86 press-fit, BB30, PF30 or T47 external bottom brackets.
It is not designed for SRAM DUB 28.99mm or 30mm spindles.
Use the Chris King Fit Finder or professional workshop measurement before ordering.

Chris King Angular-Contact Bearings

The Chris King ThreadFit T47 24i Bottom Bracket uses sealed angular-contact bearings designed and manufactured by Chris King. Unlike common radial cartridge bearings, angular-contact bearings are engineered to support both radial pedalling loads and lateral crank forces.

Their adjustable design allows correct bearing preload to be maintained as the system beds in. Chris King describes its bearings as wearing in rather than simply wearing out, with the contact surfaces becoming smoother through normal use and proper servicing.

Fully Serviceable Bearing System

The bearings can be opened, cleaned, inspected and repacked with fresh grease. This makes the Chris King ThreadFit T47 24i Bottom Bracket fundamentally different from inexpensive disposable units that require complete replacement when contamination reaches the bearings.

Regular maintenance can deliver a very long service life, making the higher initial purchase price easier to justify for riders who keep bikes for many years.

Threaded T47 Architecture

T47 was developed to combine the large shell diameter and frame stiffness associated with oversized press-fit systems with the precision, security and quietness of a threaded bottom bracket.

The threaded interface is particularly attractive to riders and mechanics seeking to reduce the possibility of creaking associated with misaligned or poorly toleranced press-fit shells.

Internal-Bearing Configuration

The 24i designation identifies the internal-bearing configuration for compatible wide T47 shells and 24mm crank spindles. The bearings sit within the shell rather than outside it, helping maintain crank compatibility and a neat finished assembly.

Precision-Machined Aluminium Cups

The cups are machined from aluminium for accurate thread engagement, low weight and corrosion resistance. Chris King’s tight manufacturing tolerances help support bearing alignment, smooth rotation and consistent installation.

Steel and Ceramic Bearing Choices

Stainless-steel bearings offer excellent durability, serviceability and value for regular training, wet rides and high annual kilometres. The ceramic option targets riders seeking a more premium specification and potentially lower rolling resistance.

Made in the USA

The Chris King ThreadFit T47 24i Bottom Bracket is engineered, manufactured and assembled in Portland, Oregon. Chris King also manufactures and hand-inspects its bearings in-house, allowing tighter control over bearing design, assembly and quality.

Shell Compatibility:

T47 internal threaded shell
86mm shell width
Compatible 86.5mm applications where approved
92mm shell width

Crank Compatibility:

24mm spindle with the correct Fit Kit
Selected stepped 24mm spindles with the correct Fit Kit
Shimano Hollowtech II-style cranksets where frame and Fit Kit specifications match

Fit Kit Guidance:

Fit Kit #4 is commonly used with standard Shimano-style 24mm spindles
Fit Kit requirements can change with crank design, spindle length and shell width
Confirm the exact kit before installation

Fit Checklist Before Purchase:

Measure the frame’s bottom bracket shell width.
Confirm the shell is internally threaded to the T47 standard.
Confirm the crank spindle diameter.
Check whether the crank uses a straight or stepped spindle.
Identify the correct Chris King Fit Kit.
Confirm the frame threads are clean and undamaged.
Check crank clearance and intended chainline.
Confirm access to the correct Chris King cup tool.
Arrange professional installation if any dimensions are uncertain.

The Chris King ThreadFit T47 24i Bottom Bracket is best suited to riders building or maintaining a premium road, gravel or endurance bike with a compatible internal T47 shell and 24mm crank spindle.

Rider discussions about Chris King bottom brackets are generally positive, particularly among cyclists who keep their bikes for a long time and prefer serviceable equipment.

Common positive rider comments include:

Exceptionally smooth bearing feel
Quiet operation when installed correctly
Long service life with regular cleaning and grease
Better long-term value than repeatedly replacing cheaper units
Excellent machining and anodised finishes
Strong customer support and warranty reputation
Good resistance to contamination with sensible maintenance
Easy bearing servicing compared with sealed disposable cartridges

Some riders note that the initial purchase cost is high and that the correct Fit Kit and installation tool add to the setup requirements. These costs make the most sense for riders who value longevity, maintain their equipment and plan to keep the frame for several years.

Wheels Manufacturing T47 Internal Bottom Bracket