261-15664-BK Master Cylinder Kit
InfoVehicle Info Needed
WILWOODPART NUMBER: 950-261-15664-BK

261-15664-BK Master Cylinder Kit

$51732
ShippingShips on 09/08/2026
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    Master Cylinder Kit
  • M/C
  • Tandem
  • Compact
  • Integral
  • 15/16 Dia
  • W/P-Valve/Pushrod
  • Mustang
  • Black
  • R/H

    Wilwood 261-15664-BK Features:

    Wilwood's new Compact Tandem Master Cylinder kit part no. 261-15664-BK has a 15/16in bore and Black E-coat finish, a right-hand side bracket, proportioning valve, tubing and pushrod with a Ford/Mustang clevis end. Wilwood has packaged the new Compact Tandem Chamber Master Cylinder (w/ Mustang pushrod) with the Combination Proportioning Valve, R/H mounting bracket, fluid tubes and mounting hardware in a kit. Tandem Master Cylinder represents the latest in refinements in brake pressure actuation and fluid control in a compact package with only 6.55in from mounting flange to end. The slotted flange mounting and included pushrod clevis end makes it a simple bolt on for 1964 to 1973 Ford and Mustang and is compatible with manual system applications. Master cylinders with pushrods are generally intended for manual brake use and available in four bores sizes, 7/8in, 15/16in, 1.00in and 1-1/8in and two finishes, ball burnished or black E-coat. The combination proportioning valve substantially simplifies wiring and brake proportioning adjustments on vehicles with custom brake systems. The combination block maintains full isolation between front and rear fluid circuits and is specifically designed to accompany the Tandem Chamber Master Cylinder. The combo valve and right-hand side bracket are black E-coated for a performance look and long lasting durability. Stainless steel fluid tubes are precision bent with preinstalled plated steel tube nuts for a simple bolt-on installation between the Combination Proportioning Valve and the Wilwood Tandem Master Cylinder. Stainless steel button head fasteners thread into the bracket for a simple installation and years of durable, rust-free performance. Simply connect the fluid lines, bleed the system, and you're finished.

Part TypeBrake Master Cylinder
BrandWILWOOD
Package Height5.62
Package Width12.38
Package Length12.38
Weight6.1 PG
Weight6.100
Part CategoryPerformance Parts
Primary Outlet Thread Size1/2-20 in.
End 1 Fitting Type3/8-24 IF or 1/2-20 IF in.
End 2 Fitting Type3/8-24 IF or 9/16-18 IF in.
Overall Length12.32" in.
MaterialAluminum
Master Cylinder Port Quantity2
Push Rod Length5.75" in.
Reservoir TypeIntegral
Mount Hole Center To Center3.20-3.40" in.
Master Cylinder Bore Diameter15/16" in., 0.938 in.
Secondary Outlet Thread Size1/2-20 in.
Reservoir Capacity7.8 / 4.7, 14.0 / 8.5
Component TypeMaster Cylinder Kit, Tandem Outlet
Stroke Length1.10 in.
Part FitmentSemi Universal
FinishBlack E-coat
Mounting Flange To End Of Case6.55"
Vendor Part Number261-15664-BK
Package Qty1
Package TypeEA
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