The Dead stop for Trigo front luggage frame (which is used in the Xplorer bags) stops the luggage frame from getting stuck on the carrier block. It's compatible with both the original plastic Brompton carrier block and the stainless steel Eerder Full metal Brackets in all it's variants.

The idea of the Dead stop is that the luggage frame will be under a defined amount of tension so that the combination is free of play, but it won't sag so far that it becomes overly tight and difficult to loosen.

Older Trigo frames have a brass thread insert which can be used to add a M4 bolt. Newer Trigo frames lack this brass insert but have a small pilot hole which is the location to drill a 6mm hole to insert the provided Rivnut. This Rivnut should be glued into place using cyanoacrylate glue (not included). Use the bolt to get a grip on the small rivnut in order to not get glue on your finger tips.

The M4 bolt will be protected from misalignment by the sticky assembly paste I apply, but can still be adjusted with a small screwdriver so that you can switch from a Brompton carrier block to a Full metal Bracket and vice versa in case you have more than one Brompton or use the bag also on your Seatposthugger while having a Full metal Bracket at the front. So you'll need to add a small screwdriver to your repair kit to be able to do this.

On the original plastic Brompton front carrier block the Dead stop bolt can be screwed fully in or up to one full turn anti clock wise from full in.

On the Full Metal Bracket, the bolt head needs to stick out around 8.3 mm measured from the raised area where the bolt is threaded in. This stick out can vary slightly depending on the FmB and your preference. For example, if you extend it 0.5-1 mm further, the pannier will come loose more easily, but it can also create some play in the connection between the luggage frame and the carrier block.

Weight: 3 grams

Tip to take a heavy bag off the carrier block:

What I do is pull the bag handle while my other hand holds the handlebars. So I don't activate the release yet, but just pull the bag loose. Then I pull again while activating the release. This method allows me to apply force with both hands (the first pull) and prevents it from suddenly shooting up and hitting something... That doesn't always work for me either. Sometimes with a really heavy load (which can be quite difficult to lift without the clamp) and after a bumpy ride, I have to lean over the handlebars and pull from the bottom with both hands, alternating left and right, to get it loose. By wiggeling it, it comes loose easily. But with the Dead stop installed and adjusted well it will not be necesarry to wiggle it to get it loose.