Wilwood GS Compact Remote Master Cylinder | 0.750" Bore | Rebuildable | 7/16-20 Threaded Inlet | Die-Cast Aluminium with E-Coat Finish

The Wilwood GS Compact Remote Master Cylinder with 0.750" bore is a rebuildable remote-mount brake master cylinder engineered for custom brake system applications — including brake bias bar setups, hydraulic handbrake systems, custom pedal box configurations, and other applications where a compact, remote-mounted master cylinder is required. The GS Compact Remote features a high-pressure die-cast aluminium body with a protective e-coat finish, a standard 7/16-20 threaded inlet, and a refined internal return spring and piston assembly for positive pressure control and a quick, complete release. Wilwood Engineering is the most respected performance brake manufacturer in the North American market — an American manufacturer with decades of motorsport development experience across road racing, oval, drag, and off-road competition.

Key Features:

• 0.750" bore — 0.750" (3/4") piston bore diameter — the bore size determines the hydraulic pressure output for a given pedal force input and the fluid volume displaced per stroke — select the correct bore size for your specific brake system requirements
• Rebuildable design — all-new rebuildable design — the master cylinder can be rebuilt with replacement seals and components rather than requiring full replacement — correct for competition applications where serviceability is a priority
• High-pressure die-cast aluminium body — high-pressure die-cast aluminium construction — lightweight and strong — correct material for a performance brake system component
• E-coat finish — protective e-coat (electrocoat) finish on the aluminium body — provides corrosion resistance in the demanding environment of a brake system
• 7/16-20 threaded inlet — standard 7/16-20 threaded brake line inlet — compatible with standard AN brake line fittings and adapters
• Refined return spring and piston assembly — refined internal return spring and piston assembly assures positive pressure control along with a quick and complete release — correct pedal feel and complete brake release
• Compact design — GS Compact designation — a compact body profile for installation in tight spaces in custom pedal boxes and brake system layouts
• Wilwood quality — manufactured by Wilwood Engineering, the most respected performance brake manufacturer in the North American market

Remote Master Cylinder — Applications:

A remote master cylinder is a master cylinder that is mounted separately from the pedal — actuated by a pushrod from a pedal, bias bar, or other mechanical input rather than being directly attached to the pedal assembly. Remote master cylinders are used in a wide range of custom brake system applications:

• Brake bias bar systems: A bias bar (balance bar) allows the driver to adjust the front/rear brake bias by shifting the balance point between two master cylinders — one for the front brakes and one for the rear. Each master cylinder in a bias bar system is a remote unit actuated by the bias bar's pushrod ends.
• Hydraulic handbrake systems: A hydraulic handbrake uses a remote master cylinder actuated by the handbrake lever to apply hydraulic pressure to the rear brakes independently of the main brake system — used in rally, drift, and time attack applications.
• Custom pedal box configurations: Custom pedal boxes for race cars and kit cars use remote master cylinders mounted to the pedal box structure and actuated by the pedal pushrods.

Bore Size — Selecting the Correct Specification:

The master cylinder bore size is a critical specification that determines the hydraulic characteristics of the brake system. A smaller bore produces higher hydraulic pressure for a given pedal force (harder pedal feel, more braking force) but displaces less fluid per stroke (less caliper piston travel). A larger bore displaces more fluid per stroke (more caliper piston travel) but produces lower hydraulic pressure for the same pedal force (softer pedal feel). The correct bore size depends on the caliper piston area, the desired pedal ratio, and the target pedal feel. Wilwood offers the GS Compact Remote in multiple bore sizes — verify the correct bore size for your specific brake system before ordering.

Specifications:

• Brand: Wilwood Engineering
• Part Number: WIL260-15091
• Barcode: 260-15091
• Bore: 0.750" (3/4")
• Body Material: High-pressure die-cast aluminium
• Finish: E-coat
• Inlet Thread: 7/16-20
• Type: Remote master cylinder — rebuildable
• Weight: 1.0 lb

Installation Notes:

• Use only DOT 3 or DOT 4 brake fluid — do not use DOT 5 (silicone) brake fluid in a system with rubber seals unless specifically confirmed compatible
• Bleed the brake system thoroughly after installation — any air in the system will result in a spongy pedal and reduced braking performance
• Verify correct pushrod length and alignment — the pushrod must be correctly aligned with the master cylinder piston to prevent side loading and premature seal wear
• Verify correct inlet fitting — the 7/16-20 inlet accepts standard AN brake line fittings — use the correct adapter if your brake line uses a different fitting specification
• Professional installation by an experienced brake system builder strongly recommended — custom brake system design and installation requires correct hydraulic calculations and thorough testing before competition or road use
• Perform a thorough brake system leak check and function test before use — verify correct pedal feel, correct brake bias, and complete brake release before driving

What's Included:

• Wilwood GS Compact Remote Master Cylinder — 0.750" bore (WIL260-15091)
• Refer to Wilwood's product documentation for complete kit contents

Why Wilwood?

Wilwood Engineering is the most respected performance brake manufacturer in the North American market — an American manufacturer with decades of motorsport development experience across road racing, oval, drag, and off-road competition. Wilwood's GS Compact Remote Master Cylinder lineup provides rebuildable, high-quality remote master cylinders for custom brake system applications — engineered with the same precision and quality as Wilwood's caliper and rotor products. For builders who want a quality rebuildable remote master cylinder from the most trusted name in American performance brakes, WIL260-15091 is the correct choice.

Perfect For:

• Custom brake bias bar systems, hydraulic handbrake systems, and custom pedal box configurations requiring a compact, rebuildable 0.750" bore remote master cylinder from Wilwood Engineering
• Race car, rally, drift, and time attack builds where a Wilwood GS Compact Remote master cylinder is the correct component for a custom brake system layout requiring positive pressure control and a quick, complete release
• Builders who want Wilwood's proven remote master cylinder quality in a rebuildable, compact aluminium unit with e-coat corrosion protection and standard 7/16-20 brake line inlet

Note: Verify correct bore size for your specific brake system before ordering. Use DOT 3 or DOT 4 brake fluid only. Bleed system thoroughly after installation. Verify correct pushrod alignment. Perform thorough leak check and function test before use. Professional brake system builder installation strongly recommended.