Wilwood 260-16520-BK Compact Tandem Brake Master Cylinder Bore - 7/8 Black

The Wilwood 260-16520-BK Compact Tandem Master Cylinder is a high-performance brake master cylinder designed specifically for manual brake applications on 1963-1967 Corvette C2 models. Featuring a 7/8" bore diameter and durable black e-coat finish, this lightweight aluminum master cylinder delivers exceptional braking performance while reducing weight by more than 50% compared to factory cast-iron units.

Key Features:

• 7/8" bore diameter optimized for Wilwood big brake kits and factory disc brake systems
• Machined from high-pressure die-cast aluminum for strength and light weight
• Weighs just 3.25 lbs—over 50% lighter than cast-iron factory master cylinders
• Full 1.10" stroke provides adequate fluid volume for multi-piston calipers
• Black e-coat finish resists corrosion and looks great under the hood
• Dual fluid outputs (1/2"-20 UNF) on both sides of bore for flexible installation
• Includes plugs and fittings for 3/8"-24, 1/2"-20, and 9/16"-18 IF brake lines
• Slotted mount flanges (3.22" to 3.40" hole spacing) bolt directly to Corvette firewall studs
• Compatible with most domestic cars and trucks from the 1960s era
• Includes specific length 3/8-24 diameter pushrod for manual brake applications

This compact tandem master cylinder is ideal for retrofitting 1963-64 drum brake cars to dual-circuit systems, upgrading to Wilwood big brake kits, or providing a softer pedal feel with reduced effort on 1965-67 non-power disc brake models. The reduced weight and compact design make installation easier while improving brake performance and safety with modern dual-circuit operation.

Note: Due to space constraints, the optional proportioning valve mounting kit (P/N 260-14248) is not compatible with this C2 Corvette tandem master cylinder. Residual valves for drum brake applications and adjustable proportioning valves are available separately.