Brompton 12-speed conversion kit upgrades your Brompton bike with a 12-speed gear setup, offering smoother shifting and a wider gear range. It’s perfect for riders who want enhanced performance and versatility for longer commutes or challenging terrains. Easy to install and designed for durability, this kit includes everything needed to transform your 6-speed or 4-speed Brompton into a 12-speed. Boost your cycling experience today!