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"
  • Engineered to offer fluid outlet ports on both sides of the bore
  • Machined from high-pressure die castings and weighs only 3lbs
  • Stroke is set at 1.10" with a volume ratio of 2:1 between the primary and secondary chambers
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Key Specs

MFG. Part #260-9439-BK
BrandWilwood
Master Cylinder Bore Size7/8 Inch
Master Cylinder MaterialAluminum
FinishEDP Coated
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Wilwood 260-9439-BK 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-BK Specifications

KEY SPECS
MFG. Part #260-9439-BK
BrandWilwood
Master Cylinder Bore Size7/8 Inch
Master Cylinder MaterialAluminum
FinishEDP Coated
GENERAL
PositionFirewall
Brake System TypeDisc
Outlet CountTandem
Reservoir TypeIntegral
Stroke1.1"
ColorBlack
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 Holes3.2"
Sold in QuantityKit
GTIN Code889545068047

Ratings & Reviews

5

2 Reviews

Overall Assessment

Customers appreciate the high-quality of our product and its perfect fit on a third Gen Nova for manual brake setup, indicating its excellent practicality. They commend Wilwood's fine craftsmanship evident in the nice satin black finish. Further benefits include included adapter fittings, block off port plugs, and a kit with fittings to bleed the master cylinder- aspects that affirm increased usability and material quality. Compared to competing products, our customers are noticeably satisfied with what we offer and endorse it for its superior features and performance.

5

2 reviews

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Quality Product and was in stock.

5.0

3 years ago

Joe W.

Peoria, AZ

Verified

Great fit on my third Gen Nova for manual brake setup.

Would Recommend

High quality from Wilwood, just as expected

5.0

5 years ago

Jim W.

Crete, NE

Nice satin black finish. Included adapter fittings, block off port plugs and a kit with fittings to bleed the master cylinder.

Would Recommend

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