Rear-frame clip set
The rear frame clip was introduced by Brompton in 2007. It stops your Brompton from automatically folding each time you pick it up (such as for going up or down a short set of steps).
This kit is designed to retro-fit to pre-2007 model Bromptons adding the improved functionality.
If your bike folds automatically when you pick it up - you probably want this - we think it's the best Brompton upgrade out there!
It clips the rear triangle in an unfolded position, to stop the bike folding automatically when picked up.
For bikes (pre-2007) with 8mm rather than 6mm bolt on the seatpost quick release. Note: Although even if you have a quick release on the seatpost, it is a different diameter (8mm) - so you need the new quick release in order for the rear frame kit to fit (it's now 6mm - so the old clamp is not compatible with the rear frame clip alone)