Performance Online, Inc. (POL) offers High Performance Dual Piston Aluminum Calipers. These aluminum calipers are a great way to upgrade your 6-Lug Disc Brake Conversions! Available for all GM type Chevrolet cars and trucks.Performance Online’s dual piston calipers are designed to provide maximum braking in a GM mount caliper.The 2 piston design applies even pressure to the full pad reducing uneven pad wear.Sold in pairs.Requires braided stainless brake hose kit #SBH-DP.