High Volume Tandem Master Cylinder - 1” Bore

One inch bore. Tandem body. More fluid per stroke. A master cylinder is where pedal feel is decided. Move too little fluid and the pedal sinks while the calipers are still waking up; move the right amount and the truck stops the instant your foot asks. That is what the high volume design buys you. A 1 inch bore with a tandem body feeds a big four wheel disc setup without the long travel that makes a converted truck feel vague. Tandem also means two separate circuits from one casting. Lose a line and you still have brakes on the other half; which is the whole reason a modern brake system is built this way. Pick your finish: raw metal for a machined look under the hood or black when you would rather the hardware disappear.

  • High volume for big brakes - it moves the fluid a four wheel disc conversion actually needs.
  • 1 inch bore - firmer pedal and shorter travel than a small bore cylinder pushing the same calipers.
  • Two circuits from one casting - a tandem body keeps half the brakes alive if a line lets go.
  • Two finishes - raw metal to show the machining or black to let it sit back under the hood.
  • Wilwood build - a brake manufacturer that publishes a part number you can match to the rest of the system.

Install Level: Moderate

Wilwood part number 260-8555.
it ships from the manufacturer.
Brake lines; fittings; brake fluid and mounting hardware are not included.
Bench bleed the cylinder before it goes on the truck.

Wilwood
SKU: 260-8555 ISBN: 42178118451390
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High Volume Tandem Master Cylinder - 1” Bore
From $249.92
Overview
Specifications
Tech Resources
Compatibility

Upgrade your brakes with the High Volume Tandem Master Cylinder - 1” Bore for greater power and superior stopping performance. This cylinder has a 1” bore with a high-volume design, providing increased hydraulic pressure for improved braking.

Wilwood part number 260-8555
Type: tandem master cylinder; high volume design
Bore: 1 inch
Circuits: dual; tandem body
Finish options: Raw Metal; Black
Variant count: 2
Listed price 249.92 USD
No port thread size; mounting bolt pattern; pushrod depth; reservoir capacity or vehicle application is published on this listing
No vehicle application is published for this master cylinder; it is sold as a universal brake component.
It is a high volume tandem master cylinder with a 1 inch bore; offered in Raw Metal and Black.
Confirm the mounting bolt pattern; the pushrod depth and the port thread size against your booster or pedal assembly before ordering.

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