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Product Summary

Universal Fit, Firewall Position, Tandem Outlet Count

  • 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
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Key Specs

MFG. Part #260-9439
BrandWilwood
Master Cylinder Bore Size7/8 Inch
Master Cylinder MaterialAluminum
FinishNatural
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Need To Know

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Wilwood 260-9439 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.

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Wilwood 260-9439 Specifications

KEY SPECS
MFG. Part #260-9439
BrandWilwood
Master Cylinder Bore Size7/8 Inch
Master Cylinder MaterialAluminum
FinishNatural
GENERAL
PositionFirewall
Brake System TypeDisc
Outlet CountTandem
Reservoir TypeIntegral
Stroke1.1"
Reservoir IncludedYes
Number of Mounting Holes2
Reservoir MaterialAluminum
Reservoir Size (cu in)14.4 or 8.7
Fluid Capacity8.0 / 4.8 fl oz.
Area0.6 sq. in.
Master Cylinder Cap IncludedYes
Hardware IncludedNo
Pushrods IncludedYes
Mounting Bracket IncludedNo
Outlet Fitting3/8"-24 IFF or 1/2"-20 IFF
Outlet Fitting 23/8"-24 IFF or 9/16"-18 IFF
Overall Length12.26"
Mounted Length8.15"
Centerline of Holes3.22"
Sold in QuantityEach
GTIN Code889545068030

Ratings & Reviews

5

5 Reviews

Overall Assessment

The product is highly praised for its proven reliability and quality, earning rave reviews from customers, notably those who build and drive nostalgia drag race cars. They particularly appreciated its great appearance and fit, underscoring its practicality. Furthermore, the product was lauded for its easy installation process, enhancing its usability. The superior material quality ensures a high level of safety, crucial for speeds reaching 160 mph. Compared to competitors, customers confidently recommend our product for its exceptional performance and dependability.

5

5 reviews

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I would purchase this product again ☺️

5.0

7 months ago

Butch

SLO CA

Verified

Installed on car under floor pan. Had to change yoke on push rod.

Would Recommend

I would purchase this product again ☺️

5.0

7 months ago

Butch

San Luis Obispo,CA

Verified

Installation on new build with 4 wheel disc brakes

Would Recommend

I would purchase this product again ☺️

5.0

7 months ago

Butch

San Luis Obispo,CA

Verified

Installation was easy with minor modifications

Would Recommend

Great product easy install

5.0

5 years ago

Sally

Omaha

Verified

Worked great..

Would Recommend

great looking and fitting master cylinder

5.0

8 years ago

Jim Bob

Wichita , Ks.

Verified

I build and drive nostalgia drag race cars and I need the reliability I always get with Wilwood brakes , going fast is fun but getting stopped can be even better from 160 mph .

Would Recommend

Showing 5 of 5 reviews