Skip to content

Cal Custom Chrome Finned Flat Top Aluminium Brake Master Cylinder 1" Bore

SKU CAL-4478
Sold out
Original price $150.20 - Original price $150.20
Original price
$150.20 - $150.20
Current price $150.20
Out of stock
  • Chrome Aluminium Brake Master Cylinder
  • 1” bore
  • Centre to centre measurement of the mounting bolt holes is 3-3/8”
  • 9/16” and ½” ports on both sides
  • Four port unit meaning you can mount your lines to either side
  • Works for:
    • disc/disc
    • disc/drum
    • drum/drum
  • Suits most GM vehicles equipped with power brake master cylinder
  • Fits most aftermarket boosters including Cal Custom and MBM, as well as all original GM (same 2 and 4 bolt pattern)
  • Considerably lighter than O.E. cast iron master cylinder


  • When mounting any master cylinder under the floor, residual pressure valves are necessary to prevent loss of brake pressure (they are not usually required for firewall mount kits).

We ship via Parcel Post with tracking

To ensure reliable delivery we ship via Australia Post.
Order by 2pm to be dispatched the same day (conditions apply).