Performance Machine 0052-1602Ds-A Sintered Brake Pad For bikes running aftermarket rear calipers from Performance Machine, renew brake performance with a set of fresh Sintered 0052-1602Ds-A Brake Pads. Features: Sintered Compatible with: 4 Piston Classic Calipers from Performance Machine 4 Piston Differential Bore Calipers from Performance Machine Sold in pairs