Brake Master Cylinders & Reservoirs

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Wilwood High Volume Integral Reservoir Master Cylinders – 1.0" Bore

Wilwood High Volume Integral Reservoir Master Cylinders – 1.0" Bore

Wilwood's High Volume Master Cylinders are made from high pressure die-cast bodies, feature 8.2oz of reservoir volume and 1,43″ piston stroke.These master cylinders are designed with high pressure, high grade aluminium die-cast bodies and steel components. They each feature a single outlet and are available in various bore sizes.Wilwood master cylinders have the highest fluid capacity of any integral reservoir design. They have a total capacity of 8.2 ounces, at least 26% more volume than other brands. The 1-7/16″ of piston travel offers extra margin when used with large piston calipers. Heavy duty internal springs provide fast retraction. The moisture is kept out thanks to formed steel lids with bellow type gaskets.Vertical flange with 2.25″ mounting hole centres. 1.4″ stroke. 7/16″ inlet, 3/8″ outlet.Wilwood master cylinders use common dimensions for flange or side mounting and 1/8-27 NPT outlet port. Bore Size Area (in): Stroke: Volumne (cu in): Type: Outlets: Finish: Reservoir Type Reservoir Size (oz) Reservoir Size (cu in) Overall Length (in): Flange to End Length (in): Inlet Size(in): Outlet Size 1 (in): Outlet Fit 1 (in): 1.0″ 0.78 1.43″ 1.11 Single Outlet 1 Bare Remote 8.2  14.8 9.15″ 4.87″   1/8-27NPT   .78″ 0.6 1.43″ 0.85 Single Outlet 1...View more

$65.52

1 retailer

Wilwood High Volume Integral Reservoir Master Cylinders – 0.825" Bore

Wilwood High Volume Integral Reservoir Master Cylinders – 0.825" Bore

Wilwood's High Volume Master Cylinders are made from high pressure die-cast bodies, feature 8.2oz of reservoir volume and 1,43″ piston stroke.These master cylinders are designed with high pressure, high grade aluminium die-cast bodies and steel components. They each feature a single outlet and are available in various bore sizes.Wilwood master cylinders have the highest fluid capacity of any integral reservoir design. They have a total capacity of 8.2 ounces, at least 26% more volume than other brands. The 1-7/16″ of piston travel offers extra margin when used with large piston calipers. Heavy duty internal springs provide fast retraction. The moisture is kept out thanks to formed steel lids with bellow type gaskets.Vertical flange with 2.25″ mounting hole centres. 1.4″ stroke. 7/16″ inlet, 3/8″ outlet.Wilwood master cylinders use common dimensions for flange or side mounting and 1/8-27 NPT outlet port. Bore Size Area (in): Stroke: Volumne (cu in): Type: Outlets: Finish: Reservoir Type Reservoir Size (oz) Reservoir Size (cu in) Overall Length (in): Flange to End Length (in): Inlet Size(in): Outlet Size 1 (in): Outlet Fit 1 (in): 1.0″ 0.78 1.43″ 1.11 Single Outlet 1 Bare Remote 8.2  14.8 9.15″ 4.87″   1/8-27NPT   .78″ 0.6 1.43″ 0.85 Single Outlet 1...View more

$65.52

1 retailer

Wilwood High Volume Integral Reservoir Master Cylinders – 0.750" Bore

Wilwood High Volume Integral Reservoir Master Cylinders – 0.750" Bore

Wilwood's High Volume Master Cylinders are made from high pressure die-cast bodies, feature 8.2oz of reservoir volume and 1,43″ piston stroke.These master cylinders are designed with high pressure, high grade aluminium die-cast bodies and steel components. They each feature a single outlet and are available in various bore sizes.Wilwood master cylinders have the highest fluid capacity of any integral reservoir design. They have a total capacity of 8.2 ounces, at least 26% more volume than other brands. The 1-7/16″ of piston travel offers extra margin when used with large piston calipers. Heavy duty internal springs provide fast retraction. The moisture is kept out thanks to formed steel lids with bellow type gaskets.Vertical flange with 2.25″ mounting hole centres. 1.4″ stroke. 7/16″ inlet, 3/8″ outlet.Wilwood master cylinders use common dimensions for flange or side mounting and 1/8-27 NPT outlet port. Bore Size Area (in): Stroke: Volumne (cu in): Type: Outlets: Finish: Reservoir Type Reservoir Size (oz) Reservoir Size (cu in) Overall Length (in): Flange to End Length (in): Inlet Size(in): Outlet Size 1 (in): Outlet Fit 1 (in): 1.0″ 0.78 1.43″ 1.11 Single Outlet 1 Bare Remote 8.2  14.8 9.15″ 4.87″   1/8-27NPT   .78″ 0.6 1.43″ 0.85 Single Outlet 1...View more

$65.52

1 retailer

Wilwood High Volume Integral Reservoir Master Cylinder Rebuild Kit – Suits 1 Inch Bore Cylinder

Wilwood High Volume Integral Reservoir Master Cylinder Rebuild Kit – Suits 1 Inch Bore Cylinder

Wilwood rebuild kit to suit the High Volume Integral Reservoir Master Cylinders.This rebuild kit will allow you to service and rebuild either 0.750″ bore, 0.825″ Bore or 1.00″ Bore master cylinders. Contains piston, seals, snap ring, push rod, lid gasket and replacement dust boot assembly. All parts necessary for maintenance and repair of your master cylinder.View more

$37.72

1 retailer

Wilwood High Volume Integral Reservoir Master Cylinder Rebuild Kit – Suits 0.825 Inch Bore Cylinder

Wilwood High Volume Integral Reservoir Master Cylinder Rebuild Kit – Suits 0.825 Inch Bore Cylinder

Wilwood rebuild kit to suit the High Volume Integral Reservoir Master Cylinders.This rebuild kit will allow you to service and rebuild either 0.750″ bore, 0.825″ Bore or 1.00″ Bore master cylinders. Contains piston, seals, snap ring, push rod, lid gasket and replacement dust boot assembly. All parts necessary for maintenance and repair of your master cylinder.View more

$37.72

1 retailer

Wilwood High Volume Integral Reservoir Master Cylinder Rebuild Kit – Suits 0.750 Inch Bore Cylinder

Wilwood High Volume Integral Reservoir Master Cylinder Rebuild Kit – Suits 0.750 Inch Bore Cylinder

Wilwood rebuild kit to suit the High Volume Integral Reservoir Master Cylinders.This rebuild kit will allow you to service and rebuild either 0.750″ bore, 0.825″ Bore or 1.00″ Bore master cylinders. Contains piston, seals, snap ring, push rod, lid gasket and replacement dust boot assembly. All parts necessary for maintenance and repair of your master cylinder.View more

$37.72

1 retailer

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.812 (13/16) Inch Bore

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.812 (13/16) Inch Bore

Wilwood GS Compact Remote Master Cylinders are an all new rebuildable design featuring a high pressure die cast aluminum body with a protective e-coat finish. Remote cylinders feature a standard 7/16-20 threaded inlet. Internally, a refined return spring and piston assembly assures positive pressure control along with a quick and complete release.View more

$70.18

1 retailer

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.750 (3/4) Inch Bore

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.750 (3/4) Inch Bore

Wilwood GS Compact Remote Master Cylinders are an all new rebuildable design featuring a high pressure die cast aluminum body with a protective e-coat finish. Remote cylinders feature a standard 7/16-20 threaded inlet. Internally, a refined return spring and piston assembly assures positive pressure control along with a quick and complete release.View more

$70.18

1 retailer

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.700 (7/10) Inch Bore

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.700 (7/10) Inch Bore

Wilwood GS Compact Remote Master Cylinders are an all new rebuildable design featuring a high pressure die cast aluminum body with a protective e-coat finish. Remote cylinders feature a standard 7/16-20 threaded inlet. Internally, a refined return spring and piston assembly assures positive pressure control along with a quick and complete release.View more

$70.18

1 retailer

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.625 (5/8) Inch Bore

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.625 (5/8) Inch Bore

Wilwood GS Compact Remote Master Cylinders are an all new rebuildable design featuring a high pressure die cast aluminum body with a protective e-coat finish. Remote cylinders feature a standard 7/16-20 threaded inlet. Internally, a refined return spring and piston assembly assures positive pressure control along with a quick and complete release.View more

$70.18

1 retailer

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.500 (1/2) Inch Bore

Wilwood GS Compact Remote Reservoir Master Cylinder – 0.500 (1/2) Inch Bore

Wilwood GS Compact Remote Master Cylinders are an all new rebuildable design featuring a high pressure die cast aluminum body with a protective e-coat finish. Remote cylinders feature a standard 7/16-20 threaded inlet. Internally, a refined return spring and piston assembly assures positive pressure control along with a quick and complete release.View more

$70.18

1 retailer

Wilwood GS Compact Integral Reservoir Master Cylinder – 0.750 (3/4) Inch Bore

Wilwood GS Compact Integral Reservoir Master Cylinder – 0.750 (3/4) Inch Bore

Wilwood GS Compact Integral Master Cylinders are an all new rebuildable design featuring a high pressure die cast aluminum body with a protective e-coat finish. Integral cylinders feature a positive seal internal bellows cap. Internally, a refined return spring and piston assembly assures positive pressure control along with a quick and complete release.View more

$72.34

1 retailer

What Are Brake Master Cylinders?

Brake master cylinders transform the applied force on the brake pedal into hydraulic pressure by sourcing fluid from the reservoir and feeding it into the brake circuit. The process is controlled through mechanical force.

Types of Brake Master Cylinders

There are two types of master cylinders including the simple and tandem versions. The difference lies in the number of pistons each cylinder contains. Simple cylinders include only one piston, while tandem cylinders integrate two pistons which generate more braking power through higher hydraulic pressure.

What are Integral Reservoir Master Cylinders?

Integral reservoir master cylinders incorporate a reservoir and a precisely engineered cylinder in one piece to increase efficiency and performance. They feature a slim aluminum design, anodized finish and dual mounting bolt systems which makes them suitable for racing cars.

Their exterior return spring guarantees a strong pedal feel and decreases pad wear. Most applications integrate built in fill tabs which allow you to easily check fluid levels.

However, a special category includes the race car master cylinders which are specifically engineered to withstand the extreme requirements and conditions of F1 or rally competitions. They're lightweight and made of aluminum alloy and they're lean design makes them easy to install in race cars where space is extremely limited.

How do Master Cylinders and Reservoirs Work?

All modern cars include twin hydraulic circuits and two master cylinders which produce hydraulic pressure in turn in case one of them shuts down.

Depending on the car manufacturer, one circuit controls the rear brakes and the other one the front brakes, or one circuit controls all four brakes and the other only the front brakes or each circuit controls one rear brake and the two front brakes.

If one of the circuits fails due to a leak, the pressure between the primary and secondary cylinders instantly decreases. This leads to contact between the primary and secondary cylinders and in turn the brake master cylinder will behave as if it only has one piston. Although the second circuit is intact, you'll have to press harder on the brake pedal to activate it. However, the brake power will be significantly lower than normal.

In neutral position, the replenishment port and bore holes of the piston achieve the compensation between the wheel brake and the fluid reservoir. The central valve closes when the brake is activated and interrupts the link between the wheel brake and the reservoir resulting in an increase of pressure.

When you release the pedal, the circuit's pressure decreases which in turn releases the wheel brakes. When the piston returns to neutral it creates a vacuum which allows for the brake fuel to replenish via central valve which is open.

Checking the Brake Fluid Level

To maintain the proper functioning of your car's brake system you should regularly check and replace the brake fluid. Also, you should keep the ventilation hole on top of the reservoir as clean as possible to prevent contaminants from penetrating into the fluid.

To check the fluid level in the reservoir you should check the line on the dipstick and make sure it's between add and full. If it's below the add mark, then you probably have a leak in the brake system. You should also verify if the liquid is clear or dark. Dark fluid is an indication that it's contaminated, and you should get the system flushed.

Safety

The brake system is a crucial component which determines a car's safety levels. That's why manufacturers only integrate tandem master cylinders in today's vehicles. If one of the brake circuits fails, the other will take over and prevents any incidents. Although master brake cylinders are made from top-quality materials they can depreciate in time. You should regularly check your car's braking system to ensure its functions at optimal levels and to avoid any accidents.