TRP Slate T4 MTB Brake - Front - Black - Cambria Bike
Amazon.com : RUJOI Bike Disc Brake Kit, Aluminum Front and Rear Caliper, Full Aluminum Alloy Bicycle Brake Lever, 160mm Rotor, Mechanic Tool-Free Pad Adjuster for Road Bike, Mountain Bike (140mm Disc Brake
Shimano Ultegra BR-R8010-R Direct Mount Rear Brake Caliper for chain stay | eBay