The Wilwood GN6R Grand National six-piston radial-mount caliper updates a classic design with a high-strength forged aluminum body in hard-anodized or Quick-Silver finishes. It accepts rotors 12.19"–13.06" and pad widths sized for .80" or .99" thickness. Stainless steel pistons are standard on anodized GN6R models, with Thermlock pistons specified for GN6R/ST variants, and it uses 3.5" or 6.0" center-mount bracket kits.
Wilwood Caliper-GN6R-R/H-Black Ano (.80 Thk Pad) 1.75/1.38/1.38in Pistons 1.38in Disc