Upgrade your Tri-Five Compatible with Chevy's handling and stopping power with drop spindles and brakes you can count on, all while staying on a budget. Kit Includes: (1) Pair of 1955-57 Compatible with Chevy 2" Drop Spindles. (1) Pair of 1955-57 Metric Caliper Brackets. (1) Bolt Kit for 1955-57 Drop Spindle to Metric Caliper. (2) 1979-1981 GM Midsize 10 1/2 Inch Disc Brake Rotors. (1) GM Metric LH Brake Caliper, 7/16-20 Inlet. (1) GM Metric RH Brake Caliper, 7/16-20 Inlet. (1) Set of Speedway Soft Street Brake Pads, GM Metric 1978-Up D154. (2) Speedway Replacement Inner Seals. (2) Inner Wheel Bearing Cones. (2) Outer Wheel Bearing Cones. (1) Spindle Nut Kit for Speedway GM Spindles. (1) Front Disc Brake Hardware Kit. (1) GM/Corvette Cast Iron Master Cylinder, 1 Inch Bore. (1) GM Disc/Drum Proportioning Valve for 3/8-24 Outlets. Learn more about the products chosen and why we recommend them for your Tri-5 Compatible with Chevy, here:Drop Spindle Install and Disc Brake Conversion on a 55 Compatible with Chevy 1955-57 Compatible with Chevy 2" Drop Spindles, Aftermarket Disc Brake Kit 1955-57 Compatible with Chevy 2" dropped spindles for use with aftermarket disc brake conversion kits. 2" drop built in. Cannot be used with stock drums or brake conversion for stock type spindle. Completes both sides. Maintains factory steering and suspension geometry. Track width is increased over stock O/E front end width by 3/4" overall or 3/8" per side. Ideal for use in conjunction with the following Wilwood brake kit for Heidts Tri-5 drop spindle application: 4-piston 12.19" rotor kit #140-12306. 1955-57 Metric Caliper Brackets These metric caliper brackets have a zinc finish. Steel design is engineered for quality as well as durability. .38" material thickness. Foundry Bolt Kit for 1955-57 Drop Spindle to Metric Caliper Use these bolt kits to mount your drop spindle conversion to metric calipers. Designed for use with 1955-57 Compatible with Chevy