Name: Wilwood Tandem Chamber Master Cylinder (1-1/8” Bore)
Brand: Wilwood
SKU: WIL260-8556-BK
Price: 304.85 USD
Availability: InStock

Aluminum tandem master cylinder integral reservoir with 'Wilwood' branding on a white background

Black Wilwood master cylinder for power brakes with 'Wilwood' branding on a white background

Wilwood Tandem Chamber Master Cylinder (1-1/8” Bore)

$304.85

Shipping calculated at checkout.

Color

Black

Polished

Gray

The Wilwood Tandem Chamber Master Cylinder was designed for hot rods, street rods, custom builds, classics, and resto-mods, this master cylinder is a favorite on award winning show cars because it works as great as it looks.

A lightweight, high pressure die cast aluminum body houses a generous integral dual reservoir and a 1.10 piston stroke that provides ample fluid volume for larger multi-piston calipers. The slotted mounting flange makes installation straightforward on many OE bolt patterns, including Chrysler, Corvette, GM, and Ford Mustang. Dual outlet ports on both sides of the bore simplify plumbing (plugs included).

This 1-1/8" bore version is optimized for power brake systems (vacuum or hydraulic assist). It features a 2:1 primary to secondary chamber volume ratio for balanced front/rear braking and weighs just 3 lbs—up to 75% lighter than cast-iron OE masters.

Includes:

(1) Wilwood Tandem Chamber Master Cylinder
Integral dual reservoir
Dual-sided outlet ports with plugs
Pushrod not included for 1-1/8" bore. Proportioning valve kits sold separately.

Manufacturer: Wilwood
Master Cylinder Type: Tandem Outlet
Bore Size: 1-1/8 in
Piston Area: 0.970 in²
Stroke: 1.10 in
Chamber Volume Ratio: 2:1 (Primary/Secondary)
Material: Aluminum
Finish: Bare
Weight: ~3 lbs
Outlets: (2)

Designed for power brake applications (vacuum or hydraulic assist)
Mount flange spacing: 3.22 – 3.40 (common mid-1960s–present domestic vehicles)
Slotted flange fits many Chrysler, GM, Corvette, and Ford Mustang bolt patterns
Front and rear outlet ports on both sides for flexible plumbing
For disc/drum systems, use a 10 lb residual valve on the drum circuit.

The Tandem Chamber design delivers refined pressure control in a compact, lightweight package. The long 1.10 stroke ensures sufficient volume for modern multi-piston calipers, while the dual outlets and slotted flange reduce installation complexity on custom and retrofit builds. Pair this master with Wilwood’s combination proportioning valve retrofit kits (PN 260-13190 or 220-13189) for clean plumbing and proper bias control.

Reservoir Capacity

Front / Rear: 8.0 oz / 4.8 oz

Volume: 14.4 cu in / 8.7 cu in

[{"id":52995826680173,"title":"Black","option1":"Black","option2":null,"option3":null,"sku":"WIL260-8556-BK","requires_shipping":true,"taxable":true,"featured_image":{"id":55154343870829,"product_id":14883118842221,"position":2,"created_at":"2026-02-02T13:10:42-06:00","updated_at":"2026-02-02T13:22:13-06:00","alt":"Black Wilwood master cylinder for power brakes with 'Wilwood' branding on a white background","width":1500,"height":1500,"src":"\/\/craneaxle.com\/cdn\/shop\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-4-Black.jpg?v=1770060133","variant_ids":[52995826680173]},"available":true,"name":"Wilwood Tandem Chamber Master Cylinder (1-1\/8” Bore) - Black","public_title":"Black","options":["Black"],"price":30485,"weight":1451,"compare_at_price":null,"inventory_management":"shopify","barcode":"889545067996","featured_media":{"alt":"Black Wilwood master cylinder for power brakes with 'Wilwood' branding on a white background","id":53009953128813,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/craneaxle.com\/cdn\/shop\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-4-Black.jpg?v=1770060133"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":52995826712941,"title":"Polished","option1":"Polished","option2":null,"option3":null,"sku":"WIL260-8556-P","requires_shipping":true,"taxable":true,"featured_image":{"id":55154343838061,"product_id":14883118842221,"position":1,"created_at":"2026-02-02T13:10:42-06:00","updated_at":"2026-02-02T13:22:13-06:00","alt":"Aluminum tandem master cylinder integral reservoir with 'Wilwood' branding on a white background","width":1500,"height":1500,"src":"\/\/craneaxle.com\/cdn\/shop\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-3-Chrome.jpg?v=1770060133","variant_ids":[52995826712941]},"available":true,"name":"Wilwood Tandem Chamber Master Cylinder (1-1\/8” Bore) - Polished","public_title":"Polished","options":["Polished"],"price":30485,"weight":1451,"compare_at_price":null,"inventory_management":"shopify","barcode":"889545068009","featured_media":{"alt":"Aluminum tandem master cylinder integral reservoir with 'Wilwood' branding on a white background","id":53009953096045,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/craneaxle.com\/cdn\/shop\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-3-Chrome.jpg?v=1770060133"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":52995826745709,"title":"Gray","option1":"Gray","option2":null,"option3":null,"sku":"WIL260-8556","requires_shipping":true,"taxable":true,"featured_image":{"id":55154375065965,"product_id":14883118842221,"position":4,"created_at":"2026-02-02T13:25:16-06:00","updated_at":"2026-02-02T13:25:17-06:00","alt":null,"width":1500,"height":1500,"src":"\/\/craneaxle.com\/cdn\/shop\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-1.jpg?v=1770060317","variant_ids":[52995826745709]},"available":false,"name":"Wilwood Tandem Chamber Master Cylinder (1-1\/8” Bore) - Gray","public_title":"Gray","options":["Gray"],"price":25404,"weight":1451,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":53009982947693,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/craneaxle.com\/cdn\/shop\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-1.jpg?v=1770060317"}},"requires_selling_plan":false,"selling_plan_allocations":[]}]

{"id":52995826680173,"title":"Black","option1":"Black","option2":null,"option3":null,"sku":"WIL260-8556-BK","requires_shipping":true,"taxable":true,"featured_image":{"id":55154343870829,"product_id":14883118842221,"position":2,"created_at":"2026-02-02T13:10:42-06:00","updated_at":"2026-02-02T13:22:13-06:00","alt":"Black Wilwood master cylinder for power brakes with 'Wilwood' branding on a white background","width":1500,"height":1500,"src":"\/\/craneaxle.com\/cdn\/shop\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-4-Black.jpg?v=1770060133","variant_ids":[52995826680173]},"available":true,"name":"Wilwood Tandem Chamber Master Cylinder (1-1\/8” Bore) - Black","public_title":"Black","options":["Black"],"price":30485,"weight":1451,"compare_at_price":null,"inventory_management":"shopify","barcode":"889545067996","featured_media":{"alt":"Black Wilwood master cylinder for power brakes with 'Wilwood' branding on a white background","id":53009953128813,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/craneaxle.com\/cdn\/shop\/files\/WIL260-8556-Aluminum-Tandem-Master-Cylinder-4-Black.jpg?v=1770060133"}},"requires_selling_plan":false,"selling_plan_allocations":[]}

Wilwood Tandem Chamber Master Cylinder (1-1/8” Bore)

You Might Also Like

Recently viewed