Union Jack BCD110 BB30 CNC Offset Crankset for Brompton Bicycle

Specially designed for Brompton folding bikes. It features a large offset to ensure that when the bike is folded, the crank arm doesn’t interfere with or impact the rear derailleur, providing better protection and maintaining precise shifting performance.

It uses a 110BCD 5-arm configuration and is compatible with the BB30 system. Available in 165mm and 170mm crank arm lengths.