This is by far the best and most affordable upgrade for flat mount mechanical disc brakes.
Juin Tech F1 Hydraulic Cable Pull Disc Brake Flat mount Set – Road | Gravel | CX
The brake pads operate by a cable actuated closed hydraulic mineral oil system. This allows the rider to use their normal sti/ergo or flat bar levers on a disc brake bike without the expense of upgrading everything to a full hydraulic system.
142grams per caliper - substantial weight saving.
The Juin Tech F1 Disc Brake Set comes complete with the following:
2 x Hydraulic cable actuated post mount disc caliper, inc. finned pads
4 x Flatmount bolts & washers
2 x 160mm Stainless Steel (6 Bolt IS)
12 x torq screws to mount rotors
Weight: 142grams per caliper approx