Take your Brompton to the next level with our 12-Speed Upgrade Kit, turning your P or T Line 4-speed into a versatile 12-speed bike. Designed with 100% authentic Brompton parts, this upgrade offers enhanced performance without compromising Brompton’s lightweight, compact design.
Feeling confident with your bike mechanic skills? Order the kit and perform the conversion yourself. For those who prefer to leave it to the professionals, select the send us your Brompton option ($250), and we’ll handle the conversion for you.
Our skilled technicians will install the upgrade and make sure everything runs smoothly. Why not go a step further? Select the Add a tune-up option and while it’s here, we’ll ensure your Brompton is performing at its absolute best. Return shipping charges will be calculated once you bike is ready to ship back to you. We do not ship internationally.
