GM-Metric-Iron Single Piston Floater - 120-8924

The Wilwood GM-Metric-Iron Single Piston Floater calipers are bolt-on replacements for 1978 and later GM Metric calipers widely used in in spec in racing categories and low cost disc brake conversions. 120-8924 is 2.75 in diameter piston Wilwood iron GM Metric calipers combine new part quality with modern machining precision. There are three piston size options to assist builders with properly building static bias into a car. Previously, builders using the metric calipers generally had to mount the same size calipers on all four wheels. This drastically limited the tuning options and often created front to rear bias ratios that were not conducive to good handling and stability under hard braking. Some builders, and other brake suppliers, chose to offer re-machined OE calipers to provide a bias tuning option. Unfortunately, re-machining a used casting that was never designed for the larger bore size, can create real compromises in strength, reliability, and performance. To address these needs, Wilwood has tooled three separate castings that are fitted with 2.75 in , 2.50” or 2.00 in stainless steel pistons and high temperature bore seals. Each casting is designed specific for its intended bore size. The calipers are strong and precise, without unnecessary added weight from oversized castings. The stainless steel pistons resist corrosion while helping to slow the heat transfer from the pads. The high temperature seals provide long service life when used in hard braking applications and maintain their resilience to provide positive piston retraction on release. All Wilwood GM Metric Calipers use the standard D154 type brake pads. The complete range of Wilwood high performance and racing pad compounds is available to match response, friction, and temperature range to any application.