Wilwood Brakes WIL Master Cylinder. Wilwood High Volume Tandem Master Cylinder - 1 1/8in Bore; M/C/TANDEM. This item is in the category "Automotive\Parts & Accessories\Car & Truck Parts & Accessories\Other Car & Truck Parts & Accessories". The seller is "emartscanada16" and is located in this country: CA. This item can be shipped to Canada.