If you are installing disc brakes to all four wheels, the use of this master cylinder is mandatory. The stock master cylinder cannot supply the additional pressure or the correct bias needed in a 4-wheel disc brake application. The answer is our 20.6mm bore Dual Circuit Master Cylinder. We offer one unit for all standard Beetles and another for Super Beetles only. Recommended for all 4-Wheel Disc Brake applications

NOTE: Oversized shipping may be required. This item is larger than our online shipping calculator can reliably calculate. Please inquire over shipping rates, or feel free to checkout and we will contact you with a revised shipping price.