Designed primarily for manual applications and include a pushrod, Will mount to flanges from 3.22\" to 3.40\", Master cylinder includes fluid outlet ports on both sides of the bore, Stroke is set at 1.10\" with a volume ratio of 2:1 between the primary and secondary chambers, Machined from high-pressure die cast aluminum Wilwood 260-9439 H/V Tandem Master Cylinder w/Pushrod, 7/8 Inch Bore Sku # 8352609439 Mfr. Part # 260-9439 Condition New Brand Wilwood Sold Each Details Wilwood\'s 7/8" or 15/16" bore Tandem Aluminum Master Cylinders available in 3 finishes, plain, ball burnished, and black e-coat. These master cylinders are designed primarily for manual applications and include a pushrod. 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 combination proportioning valve kit, which includes brackets and stainless lines specifically for use with this master cylinder, see PN 260-13190, or 220-13189 for retrofit kit. Specs Position Firewall Brake System Type Disc Outlet Count Tandem Reservoir Type Integral Master Cylinder Bore Size 7/8 Inch Stroke 1.1" Master Cylinder Material Aluminum Finish Natural Reservoir Included Yes Number of Mounting Holes 2 Reservoir Material Aluminum Reservoir Size (cu in) 14.4 or 8.7 Fluid Capacity 8.0 / 4.8 fl oz. Area 0.6 sq. in. Master Cylinder Cap Included Yes Hardware Included No Pushrods Included Yes Mounting Bracket Included No Outlet Fitting 3/8"-24 IFF or 1/2"-20 IFF Outlet Fitting 2 3/8"-24 IFF or 9/16"-18 IFF Overall Length 12.26" Mounted Length 8.15" Centerline of Holes 3.2" MFG. Part # 260-9439 Sold in Quantity Each GTIN Code 889545068030 Reviews By mistake I ordered the wrong part Rated by Estodo on August 04, 2026
Summary: I made a mistake and ordered the wrong size master cylinder for my application.
Yes, I recommend this product.
yes Rated by Jim on April 21, 2026
Summary: put it on a 1933 ford coupe worked great
Yes, I recommend this product.
I would purchase this product again ☺️ Rated by Butch on January 14, 2025
Summary: Installed on car under floor pan. Had to change yoke on push rod.
Yes, I recommend this product.
I would purchase this product again ☺️ Rated by Butch on December 28, 2024
Summary: Installation on new build with 4 wheel disc brakes
Yes, I recommend this product.
I would purchase this product again ☺️ Rated by Butch on December 26, 2024
Summary: Installation was easy with minor modifications
Yes, I recommend this product.
Related Items / Suggested Parts Mityvac MV8020 Vacuum Brake Bleeding Kit Wilwood 260-9439-BK H/V Aluminum Tandem Master Cylinder, 7/8 In. Bore Tech Support We\'re here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
