Product Summary

Universal Fit, 8.00" Overall Length, 0.75" Bore Size

  • 3/4" bore size works well with many release bearings and slave cylinders
  • 3/8"-24 inverted flare fluid outlet fitting allows common 3/16" brake lines to be connected
  • Includes 5/16"-24 thread pushrod to connect to a pedal assembly or clevis
  • Lightweight and compact design makes it easy to fit into tight spaces
  • Works with pedal assembly part numbers 83534013833, 83534013834, 83534013574 and more

Key Specs

MFG. Part #91025680
BrandSpeedway Motors

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Speedway Motors 91025680 Details

  • Lightweight, space-saving alternative to full size master cylinders
  • Fits popluar clutch and small brake applications
  • 3/4-inch bore
  • 3/8-24 inverted flare fitting included
  • 1.4 oz. fluid reservoir
  • 5/16-24 threaded pushrod

The Perfect Solution For Your Hydraulic Clutch Conversion

Ditching your ancient mechanical clutch linkage provides much needed room for custom exhaust, long tube headers, and more. Even engine swaps can often create issues with trying to reuse the factory clutch pivot linkages, as there is no longer a engine block provision for your clutch linkage. Upgrading to a hydraulic clutch solves all of these issues and provides a better, easier to modulate clutch pedal feel as well!

Learn more about selecting the proper master cylinder for your vehicle by reading our Toolbox article on Master Cylinder Bore Size Selection.


• Clutch Applications
• Small Brake Applications

Speedway Motors 91025680 Specifications

MFG. Part #91025680
BrandSpeedway Motors
Speedway Motors Catalog Part #910-25680
Overall Length8.00"
Centerline of Holes2.25"
Bore Size0.75"
Outlet Fitting3/8"-24 IFF
Thread Pitch5/16"-24
Material TypeAluminum
Sold in QuantityEach
Reservoir Size (oz)1.4