Quick view County | sku: GWC1111 Wheel Cylinder - Rear - MGA Rear Brake Wheel cylinder. These cylinders have a 7/8" bore. Fitment: - MG MGA 1500cc models. - Morris Minor - to suit the rear 7" drum brakes on Morris Minor MM, Series 2 (OHV) and Morris Minor... MSRP: Was: Now: $59.50