Made this bumper myself, ARB is so expensive!
4mm thick plate in centre, 3mm thick tapering sides
bottom is mounted to the four holes in the end of the chassis, top has 12mm steel bars that bolt to tabs i welded about 300mm back from the front of the chassis , just behind the steering box, and other side.
Has 8000lb winch and has never bent or moved under full load, and trust me ive had it loaded to max!
Let me know if you want a close up pic of mounts
Resting almost entirely on corner of bumper, and bumper never moved
"an exclusive frame mounted anti-rotation bracket" - Thanks Shrockworks for the quote
An anti-rotation bracket?? Lets think about this, a round tube with a round U bolt around it, and you say it doesnt rotate?
Sounds like its a very fancy way of saying, um i made a bumper, and um it broke off, so um I chucked some spare U bolts on it.