{"product_id":"raybestos-9821r-disc-brake-rotor","title":"Raybestos 9821R Disc Brake Rotor - Front","description":"\u003ch2\u003eOverview of Raybestos R-Line 9821R Disc Brake Rotor\u003c\/h2\u003e\u003cp\u003eThe Raybestos R-Line 9821R disc brake rotor is engineered for Porsche 911, 924, and 944 models, providing reliable braking performance. This vented rotor is designed to meet the specific requirements of these vehicles, ensuring consistent stopping power and durability.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Porsche 911, 924, and 944 models\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor for improved heat dissipation\u003c\/li\u003e\n\u003cli\u003eOverall height: 1.390 inches (35.300 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 11.120 inches (282.450 mm)\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole quantity: 5 with 126.000 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter: 4.215 inches (107.050 mm)\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 0.800 inches (20.300 mm)\u003c\/li\u003e\n\u003cli\u003eDiscard thickness: 0.752 inches (19.100 mm)\u003c\/li\u003e\n\u003cli\u003eConventional rotor type with 5 stud\/lug holes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Raybestos R-Line 9821R disc brake rotor is a vented rotor designed to optimize heat dissipation during braking, which helps reduce brake fade and maintain consistent performance. With an outside diameter of 11.120 inches and an overall height of 1.390 inches, this rotor fits precisely on Porsche 911, 924, and 944 models. The rotor features a nominal thickness of 0.800 inches and a discard thickness of 0.752 inches, ensuring it meets OEM specifications for safe operation and longevity. The 5 mounting bolt holes with a 126.000 mm bolt circle diameter and a center hole diameter of 4.215 inches provide secure and accurate fitment. This conventional, vented rotor design supports effective heat management and braking efficiency under various driving conditions.\u003c\/p\u003e\u003ch2\u003eAbout the Raybestos R-Line Product Line\u003c\/h2\u003e\u003cp\u003eThe R-Line by Raybestos is a product line focused on delivering reliable, OEM-quality brake components tailored for specific vehicle applications. The 9821R rotor exemplifies this approach by combining precise fitment with vented rotor technology to meet the braking demands of Porsche 911, 924, and 944 models. This line is designed to provide consistent performance and durability without unnecessary features, making it suitable for professional repairs and maintenance.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rotors causing brake pulsation\u003c\/li\u003e\n\u003cli\u003eImproves braking performance on Porsche 911, 924, and 944 vehicles\u003c\/li\u003e\n\u003cli\u003eAddresses rotor thickness below discard limits to maintain safety\u003c\/li\u003e\n\u003cli\u003eReduces brake fade through vented rotor design\u003c\/li\u003e\n\u003cli\u003eRestores proper rotor dimensions for secure mounting and alignment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify rotor thickness before installation; replace if below 0.752 inches discard thickness\u003c\/li\u003e\n\u003cli\u003eEnsure mounting surfaces are clean and free of debris for proper fitment\u003c\/li\u003e\n\u003cli\u003eTorque mounting bolts to manufacturer specifications to avoid rotor warping\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and replace if worn to prevent uneven rotor wear\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 R-Line rotors are manufactured to meet or exceed OEM standards for fit, form, and function. Each rotor undergoes rigorous quality control to ensure consistent thickness, balance, and material integrity. While specific warranty details are not provided here, 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":44467294339253,"sku":"BDBL-9821R","price":55.39,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RS_9821R_Fro.jpg?v=1774637376","url":"https:\/\/www.partcatalog.com\/products\/raybestos-9821r-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}