Brake > Brake Hydraulics > Brake Master Cylinder. 810in Bore GS Compact - Master Cylinder - GS Compact - 0.810 in Bore - 1.25 in Stroke - Remote Reservoir - Aluminum - Black Paint - Kit. This item is in the category "Automotive\Parts & Accessories\Car & Truck Parts & Accessories\Brakes & Brake Parts\Master Cylinders". The seller is "partsterr_canada" and is located in this country: CA. This item can be shipped worldwide.