Wilwood 260-14241-BK Remote Tandem Master Cylinder 7/8in Bore Black

Vehicle Fitment

• Universal - designed for mount flanges from 3.22 in. to 3.40 in., common to most domestic cars and trucks from the mid-1960s to present

Fitment Notes

• Manual brake systems only - not power brake compatible. Confirm your vehicle uses (or is being converted to) a manual brake setup before ordering.
• This is a remote-reservoir master cylinder with pushrod, not an integral-reservoir design - confirm your application has room for and can plumb separate remote reservoirs before ordering.
• Confirm your mount flange spacing falls within the 3.22-3.40 in. range this cylinder is designed for.
• Also available in a 15/16 in., 1.00 in., and 1.12 in. bore, and in ball burnished or black e-coat finish - this listing is the 7/8 in. bore, black e-coat version.
• Carries a California Proposition 65 warning.

Features

• Tandem (dual-chamber) design for reliable, independent front and rear brake circuit control
• High-pressure die-cast aluminum construction - roughly 75% lighter than a comparable cast-iron OE master cylinder
• Machined billet lid with a pressure-balanced bellows gasket for full sealing against moisture and fluid leakage
• Dual-side fluid outlet ports for flexible plumbing routing
• 2:1 volume ratio between primary and secondary chambers
• Includes pushrod for direct manual brake pedal actuation

Specifications

• Type: Tandem (dual-chamber) master cylinder, remote reservoir
• Bore Size: 0.875 in. (7/8 in.)
• Stroke: 1.120 in.
• Material: Aluminum (high-pressure diecast)
• Finish: Black E-Coat
• Weight: Approx. 3 lbs.
• Reservoir Capacity: 7 oz. per side (remote, not integral)
• Power Brake Compatible: No
• Pushrod Included: Yes
• Mount Flange Range: 3.22 in. - 3.40 in.

Included Components

• 1x Remote Tandem Master Cylinder
• 1x Pushrod

Product Description

The Wilwood 260-14241-BK is a remote-reservoir tandem master cylinder built for manual brake applications on mid-1960s-and-newer domestic cars and trucks, sized with a 7/8 in. bore and finished in durable black e-coat. Its die-cast aluminum body cuts significant weight versus a cast-iron OE unit while adding a machined billet lid for a fully sealed, leak-resistant design.

The tandem chamber layout keeps front and rear brake circuits independently controlled, with dual-side fluid outlet ports giving builders flexibility in how they route brake lines. A 2:1 volume ratio between the primary and secondary chambers is built into the design, and the included pushrod connects directly to a manual brake pedal setup.

Because this is a manual-brakes-only, remote-reservoir design sized for a specific mount flange range rather than one vehicle, confirming your brake system type, mount flange spacing, and reservoir mounting space before ordering is the key check here - it will not work with a power brake booster.