{"product_id":"raybestos-681938per-disc-brake-rotor","title":"Raybestos 681938PER Disc Brake Rotor - Rear","description":"\u003ch2\u003eOverview of Raybestos Disc Brake Rotor 681938PER\u003c\/h2\u003e\u003cp\u003eThe Raybestos Specialty - Street Performance; S-Groove Technology disc brake rotor 681938PER is engineered for Ford Mustang models requiring reliable braking performance. This solid rotor is designed to meet specific thickness and diameter specifications to ensure proper fit and function.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Ford Mustang vehicles\u003c\/li\u003e\n\u003cli\u003ePart number: 681938PER\u003c\/li\u003e\n\u003cli\u003eSolid disc brake rotor design\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 0.445 inches (11.3 mm)\u003c\/li\u003e\n\u003cli\u003eDiscard thickness: 0.390 inches (9.9 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 12.598 inches (320 mm)\u003c\/li\u003e\n\u003cli\u003eInside diameter: 9.252 inches (235 mm)\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole quantity: 5\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole circle diameter: 4.5 inches (114.3 mm)\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter: 2.795 inches (71 mm)\u003c\/li\u003e\n\u003cli\u003eOverall height: 1.63 inches (41.4 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis Raybestos disc brake rotor 681938PER is a solid rotor designed for conventional mounting on Ford Mustang models. The rotor features a nominal thickness of 0.445 inches (11.3 mm) and a discard thickness of 0.390 inches (9.9 mm), ensuring it meets strict wear limits for safe operation. With an outside diameter of 12.598 inches (320 mm) and an inside diameter of 9.252 inches (235 mm), this rotor fits precisely within the brake assembly. The mounting bolt hole pattern includes five holes with a 4.5-inch (114.3 mm) bolt circle diameter, matching the Mustang's factory specifications. The center hole diameter of 2.795 inches (71 mm) and overall height of 1.63 inches (41.4 mm) complete the dimensional profile necessary for proper installation and performance.\u003c\/p\u003e\u003cp\u003eThe rotor is part of the Raybestos Specialty - Street Performance; S-Groove Technology product line, which focuses on street performance applications. This line incorporates advanced S-Groove technology designed to improve brake pad contact and reduce noise, vibration, and harshness during braking. This makes the 681938PER rotor suitable for Mustang owners seeking a balance between everyday drivability and enhanced braking response.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rotors on Ford Mustang models\u003c\/li\u003e\n\u003cli\u003eAddresses brake pulsation caused by uneven rotor surfaces\u003c\/li\u003e\n\u003cli\u003eResolves excessive brake noise and vibration issues\u003c\/li\u003e\n\u003cli\u003eRestores proper rotor thickness for safe braking performance\u003c\/li\u003e\n\u003cli\u003eCompatible with conventional brake systems requiring solid rotors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify rotor dimensions and bolt pattern match your Mustang before installation\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and hardware for wear and replace as needed\u003c\/li\u003e\n\u003cli\u003eClean rotor surface with brake cleaner to remove any protective coatings\u003c\/li\u003e\n\u003cli\u003eTorque mounting bolts to manufacturer specifications to avoid rotor warping\u003c\/li\u003e\n\u003cli\u003ePerform a bed-in procedure after installation to optimize braking performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eRaybestos disc brake rotors, including part number 681938PER, are manufactured to meet or exceed OEM standards for durability and performance. The Specialty - Street Performance; S-Groove Technology line undergoes rigorous quality control to ensure consistent thickness, balance, and material integrity. While specific warranty details may vary, Raybestos typically offers limited warranties covering defects in materials and workmanship. Always consult product documentation or authorized sources for exact warranty terms.\u003c\/p\u003e","brand":"Raybestos","offers":[{"title":"Default Title","offer_id":44447093948597,"sku":"BDBL-681938PER","price":92.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RS_681938PER_Fro.jpg?v=1774636684","url":"https:\/\/www.partcatalog.com\/products\/raybestos-681938per-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}