Wilwood 260-15541-P Compact Tandem Master Cylinder Bore with Pushrod - 1-1/8

The Wilwood 260-15541-P Compact Tandem Master Cylinder delivers reliable braking performance in a lightweight, precision-engineered package. Featuring a 1-1/8" bore diameter and ball burnished finish, this manual brake master cylinder is designed for custom and performance applications where weight savings and compact packaging are critical.

Key Features:

• 1-1/8" bore diameter for optimal fluid displacement
• Includes 3/8-24 diameter pushrod for manual brake systems
• Ball burnished finish for corrosion resistance and smooth operation
• Fits mount flanges from 3.22" to 3.40" (common on most domestic vehicles mid-1960s to present)
• Dual-sided fluid outlet ports for flexible installation
• 1.10" stroke with 2:1 volume ratio between primary and secondary chambers
• Weighs only 3 lbs—75% lighter than typical cast iron OE master cylinders
• Machined from high-pressure die castings for strength and precision

This compact tandem master cylinder is ideal for street rods, muscle cars, and custom builds requiring manual brake operation. The lightweight aluminum construction reduces unsprung weight while maintaining the reliability and safety of a dual-chamber design. Compatible with Wilwood's combination proportioning valve retrofit kits (PN 260-14248 for left-hand outlets or 260-15667 for right-hand outlets) for complete brake system integration.