12-Bolt Floating Hat Disc Attachment Hardware Kit AP/Essex rings wheel They maintain a constant friction

They maintain a constant friction level over a wide range of temperatures

Complete front AP Racing by Essex Radi-CAL Competition Brake Kit for various 2005+ 911 and 2013+ Boxster/Cayman models

from all manufacturers

low friction

The Girodisc 2 piece rotor system is a direct replacement for the OEM brake disc and unless noted no additional modifications are necessary

12-Bolt Floating Hat Disc Attachment Hardware Kit AP/Essex rings wheel They maintain a constant friction12 Bolt Floating Hat Disc Attachment Hardware Kit One kit= enough hardware for one disc (buy two kits if you are swapping iron rings on two discs) Includes bolts, nuts, and washers (bobbins and AKB spring clips are re used assuming no visible wear) Torque specs for disc assembly using this hardware= 10 foot lbs. 124 inch lbs. Iron Ring and Aluminum Hat Assembly Instructions