Wilwood Tandem Aluminum Master Cylinder 1-1/8” Bore for Manual & Power Brake

Wilwood Tandem Aluminum Master Cylinder — 1-1/8” Bore for Manual & Power Brake High-performance, lightweight master cylinder engineered for power-assisted braking systems. The 1-1/8” bore is optimized for vacuum or hydraulic assist, delivering firm pedal feel, consistent fluid control, and reliable performance for street and track. Bore: 1-1/8” — ideal for power brake applications Construction: Precision-machined aluminum die casting — approximately 3 lbs, significantly lighter than OE cast iron units Stroke & Ratio: 1.10” stroke with a 2:1 volume ratio between primary and secondary chambers for balanced braking Mounting: Flange spacing 3.22”–3.40” to fit most domestic cars and trucks from the mid-1960s to present Fluid outlets: Ports on both sides for flexible plumbing and easy installation Finishes: Plain, ball-burnished, or durable black e-coat for corrosion resistance Designed for restorations, performance upgrades, and custom brake systems where reduced weight, durability, and power-brake compatibility matter. Combine with Wilwood combination proportioning valve kits (PN 260-13190 or retrofit PN 220-13189) for a complete, application-specific solution including brackets and stainless lines. Benefits: Improved braking response, consistent pedal modulation, corrosion-resistant finishes, and precision bore sizing that enhance vehicle dynamics and reliability.