Wilwood has combined the capabilities of Grand National four piston calipers with lug-drive dynamic-mount rotors in a new road race package for 2005-2014 Ford Mustangs. The kit features the high-capacity braking and heat-management of the GN4R/ST caliper coupled with 13.00” floating rotors on hats utilizing the simple lug-drive mounting system.
This kit is well-suited to NASA classes and other sanctioning bodies requiring four piston calipers and OE production S197 spindles. The kit includes GN4R/ST Thermlock piston race calipers, Spec37 iron alloy GT-48 directional vane rotors and lug-drive hat assemblies, BP-30 race compound Smart Pads, braided stainless steel flex lines, caliper brackets, and hardware for a bolt-on, no-modifications-required installation. $3,025.39