I know it's not a Thompson, but apart from the logos and faceplate it looks exactly the same... Nukeproof warhead, 110mm, 31.8 bar, 1 1/8" stem, 5' rise
I've got this mint Elite X4 stem 110mm long, 0 degrees, 1-1/8 & 31.8mm clamp. Came off my Yeti, swapped it out for a shorter length pretty soon after building the bike so it wasn't used much.