Introducing Freedom Coast Cycling's USA-made Flat Mount Disc Brake Adapters – the ultimate solution for precise, versatile, and high-performance disc brake systems. Key Features: Precision Machined from aerospace-grade 6061 aluminum, we can maintain a much tighter flatness tolerance than stock cast aluminum adapters. This ensures that the brake pads remain perfectly parallel to the brake rotor, minimizing alignment issues and pad rubbing. Titanium Hardware from Better Bolts comes standard with all of our brake adapters. Customize your look with the highest quality hardware available, choose from five different PVD-coated color options, all backed by a lifetime warranty. Lightweight Construction coming in at a slim 7.8g it's one of the lightest adapters on the market while retaining superior strength and rigidity. In combination with the weight savings from titanium hardware this adapter saves 9.3g over stock. Reversible Design to allow for either a 20mm increase or decrease in rotor size depending on the orientation of mounting.