This is my attempt at an ultra low weight 5 inch FPV racing frame. My build comes in at just 195g (excl. lipo). The frame plus hardware is 59g. I could not find a frame that is specifically designed towards a 20mm FC stack and a micro cam, most of the frame, e.g. Hyperlite floss are still designed for 30mm stacks and allow bigger FPV cams.

I use 20mm standoffs for this frame.
2204 Motors, such as Rotorama Katana 2700kv, 2204 Hyperlites or 2204 RCX
I use this stack, its great so far: https://www.banggood.com/HGLRC-XJB-F428-TX20-Omnibus-F4-Flight-Controller-28A-2-4S-Blheli_S-ESC-25100250mW-Switchable-VTX-p-1183977.html?rmmds=search

Milling instructions:
5mm carbon fibre for the arms
2mm carbon fibre for the bottom plate
1.5mm carbon fibre for the top plate

Update 2

• Base plate now features slots to secure the battery cable to it with a cable tie.
• Added arm design for 1806 motors
• Added arms for 4inch props: 1mm thinner for 12mm motor screw mounts (1806, 1407)
• Added arms for 7inch props for endurance, long range copters

Update 1

Added fixed angle mounts for runcam micro and foxeer micro in 45 and 55 degrees.