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How to determine the piston size (mm):

e.g. 30x32 = 30 in diameter, 32 in height



All seal and boot dimensions are dictated by the piston diameter.

Why RB Stainless Steel Piston (vs. Aluminum):

  1. Lower heat transmittal, only about 10% of aluminum
  2. Less brake fluid replacement & down time.
  3. Better dimensional stability (Lower heat expansion rate)
  4. Better rigidity in brake torque transmittal.


3. Detail machining & thin wall cut with chrome plate on surface.