Wilwood High Volume Tandem Master Cylinder - 1in Bore Ball Burnished

SKU: WIL260-8555-P

Master Cylinders

WIL Master Cylinder

Wilwood

Wilwood High Volume Tandem Master Cylinder - 1in Bore Ball Burnished

SKU: WIL260-8555-P

Master Cylinders

WIL Master Cylinder

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

Wilwood’s Tandem Aluminum Master Cylinder is available in 2 bore sizes 1.00” and 1-1/8”; and 3 finishes, plain, ball burnished and black e-coat. 7/8” bore master cylinders are designed primarily for manual applications and include a pushrod. The 1” bore can be used in manual and power assisted applications and does not come with a pushrod. The 1-1/8” bore is designed for use primarily with power brake applications, either from vacuum assist or hydraulic assist systems. They’re designed for mount flanges from 3.22” to 3.40”, common measurements for most domestic cars and trucks from the mid 1960s to present, and offer fluid outlet ports on both sides of the bore. The stroke is set at 1.10” with a volume ratio of 2:1 between the primary and secondary chambers. Machined from high-pressure die castings, each master cylinder weighs only 3lbs, a 75% weight savings over most cast iron OE type master cylinders. We also offer a our combination proportioning valve kit, which includes brackets and stainless lines specifically for use with these master cylinders, see PN 260-13190, or 220-13189 for retrofit kit.

Part Type

Alum Tandem M/C 1.00in Bore

Data: v4.2 - Upd: 2026-09-30 17:29:10

Specifications

Product Attributes - UPC: 889545067972
Product Attributes - Brand: Wilwood Disc Brakes
Product Attributes - Notes: Includes 3/8 in.-24 Inverted Flare adapter fittings.
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Master Cylinders
Product Attributes - Bowl Design: Dual
Product Attributes - Product Line: Wilwood Aluminum Tandem Master Cylinders
Product Attributes - Outlet Size 1: 1/2 in.-20
Product Attributes - Outlet Size 2: 1/2 in.-20
Product Attributes - Remanufactured: No
Product Attributes - Outlet Quantity: 2
Product Attributes - Pushrod Included: No
Product Attributes - Remote Reservoir: No
Product Attributes - Reservoir Finish: Polished
Product Attributes - Hardware Included: No
Product Attributes - Reservoir Included: Yes
Product Attributes - Reservoir Material: Aluminum
Product Attributes - Master Cylinder Usage: Brake
Product Attributes - Master Cylinder Finish: Polished
Product Attributes - Master Cylinder Stroke: 1.100 in.
Product Attributes - Mounting Hole Quantity: 2 holes
Product Attributes - Power Brake Compatible: Yes
Product Attributes - Master Cylinder Material: Aluminum
Product Attributes - Master Cylinder Bore Size: 1.000 in.
Product Attributes - Manufacturer's Part Number: 260-8555-P
Product Attributes - Mounting Brackets Included: No
Product Attributes - Master Cylinder Cap Included: Yes
Product Attributes - Mounting Flange Center to Center Distance (in.): 3.220-3.400 in.

Reference Information

Brand Name/s	Wilwood
StreetFX SKU	wil260-8555-P
SFX Item ID	4403780
Supplier Item Code	4403780
Manufacturer SKU	260-8555-P
Manufacturer UPC	889545067972
Alternative References	1in

Compatibility

Application Data

Universal Yes
Front Brake Type (application) Disc
Rear Brake Type (application) Disc
Application Notes Includes 3/8 in.-24 Inverted Flare adapter fittings.
Universal Yes
Front Brake Type (application) Disc
Rear Brake Type (application) Drum
Application Notes Includes 3/8 in.-24 Inverted Flare adapter fittings.
Universal Yes
Front Brake Type (application) Drum
Rear Brake Type (application) Drum
Application Notes Includes 3/8 in.-24 Inverted Flare adapter fittings.