Lower Gearing Upgrade for Easier Starts and Steeper Streets Swapping from Brompton’s stock 50T to this 44T chainring is a straightforward way to get lower gears without changing your drivetrain. The smaller ring gives roughly a 12% reduction in gearing, making starts, hills, and heavier loads feel more manageable. Because you’re moving to a smaller chainring, you may need to remove links from the chain to maintain proper tension when the bike is folded. Instructions are included with the part. Small Things – Big Difference 44T chainring provides approximately a 12% reduction in gearing vs. a 50T ring Helps make climbs and stop-and-go riding easier Includes integrated chainring guard Designed for Brompton spider type cranksets Instructions included for installation and chain length adjustment