These genuine ISR seal kits are a direct fit replacement for your ISR brake or clutch master cylinder.  An exact fit replacement using high quality rubber compounds with outstanding heat and wear characteristics.  These rubber seals are a little thicker than is typical providing durability and strength for high powered stops every time.  Available in 14mm, 15.87mm, and 17.5mm kits they fit ALL of the rear master cylinders, clutch (LH) master cylinders, and brake (RH) master cylinders.  Make your selection above before adding to your cart. 


These seal kits will fit all of the following ISR master cylinders, either rear, clutch (LH), or brake (RH):

• 21-005 (LH or RH)
  
• 21-006 (LH or RH)
  
• 21-009 (rear)
  
• 21-010 (rear)
  
• 21-011 (LH or RH)
  
• 21-012 (LH or RH)
  
• 21-013 (LH or RH)
  
• 21-014 (LH or RH)
  

We supply ALL ISR brakes and replacement parts, please inquire if you do not find what you are looking for.