Features:

1. Internal Lock Nut for tight and secure fixture, no more loosen part.

2. Easy to swap rear shocks for different road conditions and performance requirements.

3. Raise B frame after folding for more ground clearance and balanced fold to address the following issues:

              a. Grip on Brommie always scratching ground because lack for clearance (except for S type).

              b. Brompton without mudguard can’t stand still folded.