Seatpost clamp

An upgrade to the seatpost clamp can be a significant improvement for Brompton folding bike owners. Brompton's stock seatpost clamp is known for its limited clamping force and can cause problems when using a heavier rider or riding on rough terrain. A replacement seatpost clamp with a stronger clamping mechanism can improve the bike's stability and reliability, especially during fast descents and on uneven terrain.