Shimano BR6810-R replacement

flyingboy75

I have purchased a felt AR2 2016 and the rear brake is a direct mount Shim BR6810-R. The brake sticks out from the frame and looks but ugly. The clearance to the non drive arm is mm. Due to this I can't use my stages power arm as it hits the brake. I would like to change the rear brake caliper if possible, looked at TRP but they say theirs isn't compatible. Anyone know one that is is?

Thanks in advance