Wilwood Short Compact Remote Master Cylinder Kit - Bore .625
The Wilwood short compact remote master cylinders are designed for applications where space is lim...The Wilwood short compact remote master cylinders are designed for applications where space is limited but the output capacity of a full-size cylinder is required. The body is only 3.36" (85mm) long yet the stroke is 1.12" (28mm), which meets or exceeds most full-size cylinders. This short body design is ideal for restricted spaces. The kit includes the cylinder and two different reservoir sizes that can be mounted directly to the cylinder or remotely. A mounting bracket, feed hose, fittings, and clips are included for remote mounting. The cylinder features a black E-coated body for corrosion resistance. It is fully rebuildable with kits available separately.
Specifications:
Body length: 3.36" (85mm)
Total length (inc pushrod): 7.82" (199mm)
Fluid outlet: 1/8" NPT female
Pushrod thread: 5/16" UNF
Mounting flange: Vertical with 2.25" (57mm) hole centers
This Wilwood master cylinder kit is for custom vehicle builders and mechanics working in tight spaces who need reliable braking performance. Its primary benefit is its compact design, offering full-size output in a short body, with a key caveat being the need for specific technical knowledge for installation. This kit features a corrosion-resistant E-coated body, includes options for direct or remote reservoir mounting, and provides ample stroke for most applications.
All features
Model Part Number
260-10371
Brand
Wilwood
Extended Product Information
FAQs
What is the main advantage of this master cylinder?
Its primary advantage is its extremely compact body length (3.36 inches), allowing it to fit into very tight spaces where larger master cylinders would not be suitable, while still providing ample braking output.
Can I use this master cylinder with my existing brake lines?
You will need to adapt your brake lines to the 1/8" NPT female fluid outlet. Ensure you use the correct fittings for your specific brake line material and size.
What type of brake fluid should I use?
This master cylinder is compatible with standard DOT 3 or DOT 4 brake fluid. Always use fresh, high-quality fluid.
How do I know if the bore size (.625) is correct for my application?
The bore size affects the leverage and fluid displacement. A .625" bore is generally suitable for single caliper applications or dual caliper applications with smaller pistons. Consult your brake system designer or a professional for specific recommendations based on your vehicle's weight and intended use.
Is the reservoir included?
Yes, the kit includes the master cylinder and two different reservoir sizes, along with hardware for both direct and remote mounting.
How do I bleed the brakes with a remote reservoir?
Bleeding procedure is similar, but ensure the remote reservoir is kept full and that the feed line maintains constant fluid supply to the master cylinder during the bleeding process.
Is this a direct bolt-on replacement for any specific vehicle?
No, this master cylinder is designed for custom applications and may require modification for installation. It is not typically a direct bolt-on for any specific factory vehicle.
Troubleshooting
Brake pedal feels spongy or soft.
Air in the brake lines. Re-bleed the entire brake system carefully. Ensure all connections are tight and leak-free.
Master cylinder leaks fluid.
Check the seals on the fluid outlet fitting and reservoir connections. Ensure they are properly seated and tightened. If leaking from the piston seal, the unit may require a rebuild.
Brakes are not engaging properly.
Verify brake line connections are correct and secure. Ensure the pushrod is properly connected to the pedal and has full travel. Check caliper function independently.
Remote reservoir hose is kinked or blocked.
Straighten the hose and ensure there are no obstructions. Check for proper fluid flow from the reservoir to the master cylinder.
Pros and Cons
Pros
Significantly reduced body length for tight installations.
Maintains high fluid displacement comparable to larger cylinders.
Flexible mounting options for reservoirs.
Durable E-coated finish for enhanced longevity.
Kit includes necessary components for remote mounting.
Cons
Requires mechanical expertise for proper installation and brake bleeding.
Fluid outlet is a specific NPT size, may require adapters.
Pushrod thread size is specific, requiring compatible linkages.
Rebuild kits are sold separately.
Primarily designed for custom or performance applications, not direct OEM replacement.
Setup, Compatibility & Care
Setup:
Identify the desired mounting location, considering clearance for the cylinder body, reservoir, and pushrod travel.
Mount the cylinder using the provided bracket or by drilling appropriate holes in the firewall, ensuring the mounting flange is secure.
Connect brake lines to the 1/8" NPT female fluid outlet. Use appropriate fittings and thread sealant.
Attach the reservoir: either directly to the cylinder ports or remotely using the supplied hose, fittings, and bracket.
Connect the pushrod to the brake pedal linkage, ensuring smooth operation without binding.
Bleed the brake system thoroughly following standard procedures to remove all air.
Compatibility:
Fluid Outlet: 1/8" NPT female. Requires compatible brake line fittings.
Pushrod Thread: 5/16" UNF. Ensure pedal linkage is compatible or can be adapted.
Mounting Flange: Vertical, with 2.25" (57mm) hole centers. Requires a compatible mounting surface.
Reservoir: Compatible with DOT 3 or DOT 4 brake fluid.
Care:
Periodically check brake fluid levels in the reservoir and top off as needed with fresh, compatible fluid.
Inspect brake lines and fittings for leaks or damage.
Clean the exterior of the cylinder with a damp cloth. Avoid harsh chemicals.
For long-term maintenance, consider a rebuild every few years or as recommended by service intervals, using Wilwood's specific rebuild kits.