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Product Summary

Universal Fit, Firewall Position, Natural

  • GM-style aluminum master cylinder provides a weight savings and longer service life
  • Has 2 mounting holes on a 3-1/4" center for 3/8" or 10mm bolts
  • 1" stainless steel sleeved bore
  • Unpolished aluminum
  • Deep piston design for manual or power brakes

Key Specs

MFG. Part #91031428
BrandSpeedway Motors

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Details

As featured on Classic Truck’s Week to Wicked. Watch the transformation here!

Brake fluid can ruin your master cylinder in just a few years. Stop the problem by using a stainless steel sleeved master cylinder. Our sleeved GM-style aluminum master cylinder provides a weight savings and longer service life. It has 2 mounting holes on a 3-1/4" center for 3/8" or 10mm bolts.

  • 1" stainless steel sleeved bore
  • Unpolished aluminum
  • Height from center line to the top most point on the retaining bar is 3.5"
  • 3/8"-24 inverted flare ports on each side
  • 'Standard' or 'Long' thread 3/8"-24 IF male fittings should be used
  • 'Short' thread IF male fittings will not seal properly
  • Includes plugs for the side not used
  • Deep piston design for manual or power brakes 
  • Pushrod NOT included

Learn more about selecting the proper master cylinder for your vehicle by reading our tech article. Brake System Selection.

Specifications

KEY SPECS
MFG. Part #91031428
BrandSpeedway Motors
GENERAL
PositionFirewall
Brake System TypeDisc/Drum
Outlet CountTandem/Both Sides
Reservoir TypeIntegral
Master Cylinder Bore Size1 Inch
Master Cylinder MaterialAluminum
FinishNatural
Reservoir IncludedYes
Outlet Fitting3/8"-24 IFF
Overall Width4.3"
Overall Height4.75"
Mounted Length8"
Centerline of Holes3.25"
Sleeve MaterialStainless Steel
Sold in QuantityEach
NotesHas a deep well piston that can be used with a manual pedal. Includes an adapter to fill the deep well so it can be used with a booster.9103186 3/8-24 brass inverted flare male plugs for ports. Or 9103190 steel plugs.