8 Series disc brake pads are for 4-piston calipers. 

FEATURES: 

• Disconnected two-piece back plate
  
• The Sport Compound offers powerful braking, high durability, and short bed-in time, making it the perfect brake pad for use with e-bikes
  
• Set of four-disc brake pads and two pad retaining bolts for one caliper
  

SPECS:

• Pad Shape Number: 46
  
• Designed for ebike: Yes
  
• Backing Plate Material: Steel