Amazon.com : Shimano ROTOR FOR DISC BRAKE, SM-RT800, SS 140MM, W/LOCK RING : Sports & Outdoors
Amazon.com : BUCKLOS Shimano MT200 MTB Hydraulic Disc Brakes Set with 160mm Rotors, Front Left 800mm Rear Right 1550mm/1650mm Mountain Bike Hydraulic Brake Aluminum Alloy Levers with Calipers : Sports & Outdoors
SHIMANO Post Mount Mechanical Disc Brake Caliper | SHIMANO BIKE-EU