Wilwood 1-1/8-inch Compact Tandem Master Cylinder with Captured Rod, Chrome Powder-Coated Body

SKU: 260-15541-P

$365.21

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Product details

Chrome powder coating covers this larger-bore Compact Tandem master, supplied with a threaded manual pushrod. The two integral fluid chambers and alternate outlet sides support a custom dual-circuit layout without requiring remote reservoir hoses. Established in 1977 by Bill Wood, Wilwood Engineering designs and manufactures disc brake systems from its base in Camarillo, California. Calipers, fittings, rotors, valves, master cylinders and brake lines serve its motorsport, street-performance and specialized applications. The full assembly, including its mating connections and operating requirements, governs the correct part selection.

Technical Details

Manufacturer part number: 260-15541-P
Material: Aluminum
Cylinder bore: 1-1/8"
Pressure circuits: 2
Stroke Length: 1.10 in
Reservoir Type: Integral tandem chambers, 7.8 and 4.7 oz
Fluid capacity: 7.8 / 4.7 oz
Flange-to-end length: 6.55"
Overall Length: 10.93"
Mounting centers: 3.22–3.40"
Pushrod dimensions: 4.38" x 3/8-24
Finish: Chrome powder coat
Native pressure ports: 1/2-20 at both circuits; use the correct included outlet adapters and seal washers
Circuit outlet adapters: Primary: 3/8-24 or 1/2-20 inverted flare; secondary: 3/8-24 or 9/16-18 inverted flare
Hydraulic relationship: Equal pressure output from the two circuits before external proportioning; 2:1 primary/secondary volume relationship
Service: Factory rebuild only; do not disassemble the tandem piston assembly

Fitment & Compatibility

Verify that the one-and-one-eighth-inch bore agrees with pedal ratio and brake-fluid demand. Provide clearance for the complete pushrod assembly and ensure full piston movement before the pedal stops. Use the correct supplied flare adapters and seals, and have Wilwood perform any required internal rebuilding.

Manufacturer Documents

With more than 20 years of experience, PMB Performance can help compare the specified part with the assembly you are servicing. Include the existing part identification and relevant hydraulic dimensions.