Product Summary

Universal Fit, Firewall Position, Tandem Outlet Count

  • Complete tandem master cylinder kit with bracket and proportioning valve
  • Includes fluid tubes and mounting  for a cleaner installation
  • 1-1/8-inch bore supports a wide range of manual or power brake setups
  • Slotted mounting flange fits many common OE bolt patterns
  • Great upgrade for custom, muscle car, and performance brake system builds
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Key Specs

MFG. Part #261-13270-BK
BrandWilwood
Master Cylinder Bore Size1-1/8 Inch
Master Cylinder MaterialAluminum
FinishEDP Coated
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Wilwood 261-13270-BK Details

Wilwood's 261-13270-BK is an Aluminum Tandem Master Cylinder Kit with bracket and combination proportioning valve. This package includes the tandem master cylinder, combination proportioning valve, mounting bracket, fluid tubes, and mounting . The tandem master cylinder uses an integral reservoir design and is compatible with both manual and power brake systems. The slotted flange mounting supports many OE patterns, including Chrysler, Corvette, GM, and Ford Mustang applications.

Wilwood lists the core master cylinder dimensions at 1-1/8-inch bore with tandem outlets, aluminum construction, and integral reservoirs sized at 8.0 and 4.8 ounces. This kit is easy to position as a clean, compact, all-in-one master cylinder upgrade for builders who want improved brake plumbing and a more professional firewall setup.

  • Complete tandem master cylinder kit with bracket and proportioning valve
  • Includes fluid tubes and mounting  for a cleaner installation
  • 1-1/8-inch bore supports a wide range of manual or power brake setups
  • Slotted mounting flange fits many common OE bolt patterns
  • Great upgrade for custom, muscle car, and performance brake system builds

Wilwood 261-13270-BK Specifications

KEY SPECS
MFG. Part #261-13270-BK
BrandWilwood
Master Cylinder Bore Size1-1/8 Inch
Master Cylinder MaterialAluminum
FinishEDP Coated
GENERAL
PositionFirewall
Brake System TypeDisc
Outlet CountTandem
Reservoir TypeIntegral
Stroke1.1"
ColorBlack
Reservoir IncludedYes
Number of Mounting Holes2
Reservoir MaterialAluminum
Reservoir Size (cu in)14.4 or 8.7
Fluid Capacity8.0 / 4.8 fl oz.
Area0.97 sq. in.
Master Cylinder Cap IncludedYes
Hardware IncludedYes
Pushrods IncludedNo
Mounting Bracket IncludedYes
Outlet Fitting3/8"-24 IFF or 1/2"-20 IFF
Outlet Fitting 23/8"-24 IFF or 9/16"-18 IFF
Overall Length8.76"
Mounted Length8.15"
Centerline of Holes3.2"
Sold in QuantityEach
GTIN Code889545068115

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