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Product Summary

Firewall/Frame Position, Disc Brake System Type

  • Has a total of 1-7/16" of piston travel
  • Pedal feel is improved and piston retraction is guaranteed
  • More fluid volume means cooler temperatures and additional insurance for extreme conditions
  • These high-volume aluminum master cylinders have the highest fluid capacity of any integral reservoir design
  • Features an internal slosh baffle that guarantees a constant fluid supply to the bore chamber during hard cornering, acceleration and braking

Key Specs

MFG. Part #
BrandWilwood
PositionFirewall/Frame
Brake System TypeDisc

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Details

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.

Charts

Specifications

KEY SPECS
MFG. Part #
BrandWilwood
PositionFirewall/Frame
Brake System TypeDisc
GENERAL
Outlet CountSingle
Reservoir TypeIntegral
Master Cylinder Bore Size
Stroke1.43"
Master Cylinder MaterialAluminum
FinishNatural
ColorNatural
Reservoir IncludedYes
Number of Mounting Holes2
Reservoir MaterialAluminum
Reservoir Size (cu in)14.8
Fluid Capacity8.2 oz.
Area
Volume
Master Cylinder Cap IncludedYes
Hardware IncludedNo
Pushrods IncludedYes
Mounting Bracket IncludedNo
Outlet Fitting1/8"-27 NPT
Overall Length9.15"
Overall Width2.55"
Overall Height4.50"
Mounted Length5.25"
Centerline of Holes2.25"
Thread Pitch5/16"-24
Thread Length1.88"
Sold in QuantityEach
Notes3.50" pushrod
GTIN Code