Wilwood High Volume Alum Master Cylinder, DOT 4 Fluid & Tool

Master Cylinder

Wilwood high-volume aluminum master cylinders have the highest fluid capacity of any integral reservoir design. With a total capacity of 8.2 ounces, there is at least 26% more fluid than most competitive brands. More fluid volume means cooler temperatures and additional insurance for extreme conditions where high pad wear can compromise fluid levels during long events. With 1-7/16" of piston travel, there is plenty of margin when used with large four or six piston calipers.

An internal slosh baffle guarantees a constant fluid supply to the bore chamber during hard cornering, acceleration and braking. This unique baffle also eliminates aeration into the reservoir from return fluid that can occur during brake release and bleeding procedures.

• Die-cast from high-grade aluminum
• Heavy-duty internal piston springs provide fast retraction for immediate release and positive fluid transfer without the need for cumbersome external pushrod springs
• Pedal feel is improved, piston retraction is guaranteed, fluid recovery is quicker and the bleeding process is simplified
• Formed steel lids, heavyweight bail wires and bellows type gaskets keep the fluid in and the moisture out with correct pressure balancing during fluid displacement
• 1/8"-27 NPT fluid port

Learn more about selecting the proper master cylinder for your vehicle by reading our tech article. Brake System Selection.

 

Brake Fluid

EXP 600 Plus is a highly refined blend developed for extreme performance under the high heat and extreme pressure of professional motorsports. EXP 600 Plus has been tested to 626° F with a wet boiling point of 417° F. These numbers far exceed any DOT or SAE specifications.

It is true that racing brake fluids need to have high boiling points. It is also true that fluids need to have low moisture affinity to slow the natural absorption rate of water vapor. But the true test of any high temp brake fluid is how well it resists aeration and compressibility after it has been heated and pressure cycled a few hundred times. The real test is at the track. EXP has been proven to maintain firm pedal feel and quick response, long after others have failed.

Note: For optimum performance, EXP 600 Plus should not be diluted with any other brake fluids. Add new fluid to a clean system.

 

Bleeding Tool

 

• Maximum capacity: 1 liter (33 oz)
• Uses standard workshop air supply
• Universal rubber fitting holds securely on brake bleed screw
• Convenient hanging hook and locking trigger
• Transparent drain hose allows

835-260676 Instructions(PDF)

8352906209 Instructions (PDF)

Material Safety Data Sheet (PDF)