Chris King ThreadFit™ T47 30i Bottom Bracket

A popular upgrade stocked by Brisbane bike shops and specified by professional bicycle service centres, the T47 30i is ideal for high‑end road bikes, gravel bikes, endurance builds, and custom frames where performance and longevity matter.

Bearing Technology

Every Chris King bottom bracket is built around the company’s legendary angular‑contact bearings, available in steel or ceramic. These bearings are designed and manufactured in‑house and are widely regarded as some of the highest‑quality bicycle bearings available.

The angular‑contact design supports both radial and side loads, resulting in extremely low rolling resistance. Unlike sealed cartridge bearings that degrade over time, Chris King bearings are designed to become smoother as they wear in, delivering consistent performance year after year.

For Brisbane riders logging long training miles, racing, or riding mixed road and gravel conditions, this translates to smoother pedalling, reduced friction, and outstanding reliability.

Why Choose the ThreadFit™ T47 30i

This bottom bracket is chosen by cyclists who want a component they do not need to think about again after installation.

It offers exceptionally low drag for improved pedalling efficiency.
It is fully serviceable, allowing it to be opened, cleaned and repacked for many years of use.
It provides a secure, silent threaded interface that eliminates creaks common with conventional press‑fit systems.
It delivers press‑fit‑level shell stiffness while remaining mechanic‑friendly.

These qualities make it a preferred option for Brisbane cyclists upgrading premium road or gravel bikes, particularly those investing in long‑term performance rather than disposable components.

Fit and Compatibility

The ThreadFit™ T47 30i is compatible with a wide range of modern frames and cranksets.

Shell compatibility includes T47 threaded bottom bracket shells with widths of 68 mm, 73 mm, 83 mm, 86 mm, and 92 mm.
Crank compatibility covers 30 mm spindle cranksets, commonly used in performance road, gravel, and endurance builds.

A Chris King Fit Kit is required to correctly space and preload the crankset. Fit Kits allow precise setup based on crank model and spindle length, which is why professional installation through a Brisbane bicycle service workshop is recommended.

Manufacturing and Warranty

The ThreadFit™ T47 30i is engineered, manufactured, and assembled in Portland, Oregon (USA). Tight machining tolerances and careful quality control ensure perfect alignment, durability, and long service life.

Chris King backs this product with a Lifetime Warranty, reflecting the confidence in its materials, design, and rebuildable construction.

Installation Notes

Installation requires the Chris King bottom bracket cup tool. Correct Fit Kit selection and torque settings are essential for optimal performance and bearing longevity.

Most Brisbane bike shops and professional bicycle mechanics are fully equipped to install and service Chris King bottom brackets.

Product Summary

Product: Chris King ThreadFit™ T47 30i Bottom Bracket
Shell standard: T47 threaded
Shell widths supported: 68 mm, 73 mm, 83 mm, 86 mm, 92 mm
Spindle compatibility: 30 mm
Bearings: Chris King angular‑contact, steel or ceramic
Serviceability: Fully rebuildable and repackable
Warranty: Chris King Lifetime Warranty
Manufacturing location: Portland, Oregon, USA
Installation tools: Chris King bottom bracket cup tool
Fit Kit: Required

Ideal For

• High‑end road bike builds
• Gravel and endurance bikes
• Custom frame builds
• Cyclists upgrading from press‑fit bottom brackets
• Riders prioritising smoothness, silence, and long‑term durability
• Premium bike servicing and maintenance programs in Brisbane