Wilwood High Volume Master Cylinder (3/4” Bore)
SKU: WIL260-6764
The Wilwood High-Volume Aluminum Master Cylinder is engineered for demanding braking systems that require maximum fluid capacity, extended piston travel, and consistent pedal feel, especially when paired with large four- or six-piston calipers. Unlike traditional sand-cast master cylinders, Wilwood’s die-cast construction allows the bore to be finished without a stainless sleeve. This results in better heat dissipation, improved seal life, tighter tolerances, and reduced internal temperatures.
With a total fluid capacity of 8.2 ounces, this design provides at least 26% more fluid volume than most competing integral-reservoir master cylinders. A 1-7/16 piston stroke delivers ample margin for high-displacement caliper systems. Heavy-duty internal return springs ensure fast piston retraction, while an internal slosh baffle maintains constant fluid supply during hard braking, acceleration, and cornering.
Includes:
- (1) Wilwood High-Volume Aluminum Master Cylinder
- Integral reservoir with internal slosh baffle
- Formed steel lid with bellows-style gasket
Specifications
- Manufacturer: Wilwood
- Master Cylinder Type: Single Outlet
- Bore Size: 3/4 in
- Piston Area: 0.440 in²
- Stroke: 1.43 in
- Volume: 0.62 cu in
- Material: Aluminum body / Steel components
- Finish: Bare
- Outlet Count: 1
- Outlet Thread Size: 1/8-27 NPT
Fitment
- Designed for racing, off-road, and high-performance brake systems
- Ideal for use with large four- or six-piston calipers
- Common mounting dimensions for flange or side mounting
- Compatible with standard 1/8-27 NPT brake fittings
- Verify bore size and system requirements before ordering.
Tech Insight
The High-Volume Master Cylinder is purpose-built for extreme braking environments. Its die-cast aluminum bore eliminates the heat retention and wear issues found in stainless-sleeved sand-cast designs, while the increased fluid capacity helps prevent pedal fade during long events. The internal slosh baffle and heavy-duty return springs improve pedal consistency, speed up fluid recovery, and simplify bleeding—making this an excellent choice for endurance racing, off-road competition, and high-piston-count brake systems.
Reservoir Capacity
Reservoir Type: Integral
Capacity: 8.2 oz
Volume: 14.80 cu in