Brompton Chainring 46T–58T – Aluminium Alloy 130 BCD, Lightweight Upgrade for Folding Bikes (Excludes T Line)

✅ Key Features

Wide Size Range – Available in 46T, 48T, 50T, 52T, 54T, 56T, and 58T to suit different riding styles and gearing preferences.

Brompton Compatible – Designed for all Brompton models (excluding T Line).

Performance Upgrade – Larger chainrings allow higher top speeds, ideal for stronger riders and flat terrain.

Lightweight & Durable – Made from high-quality aluminium alloy, weighing approximately 71–103g depending on size.

Standard Fit – 130mm BCD for reliable compatibility with appropriate cranksets.

📦 Product Details

Material: Aluminium alloy

BCD: 130 mm

Sizes: 46T / 48T / 50T / 52T / 54T / 56T / 58T

Weight: Approx. 71–103g (varies by size)

Package Includes: Chainring only (bolts not included)

💡 Description


Upgrade your Brompton folding bike with this stylish and lightweight aluminium chainring, designed to improve performance and customise your riding experience. Available in a wide range of sizes, it allows you to fine-tune your gearing for higher speeds or more efficient pedalling.


Please note that Brompton’s standard chainring sizes are 44T, 50T, and 54T. If installing a different size, you may need to adjust your chain length. A common solution is to use a 116-link chain and resize it to fit your setup.


For optimal performance and smoother drivetrain operation, it is recommended to install a new chain and sprockets when upgrading your chainring.