{"product_id":"raybestos-980399r-disc-brake-rotor","title":"Raybestos 980399R Disc Brake Rotor - Rear","description":"\u003ch2\u003eOverview of Raybestos R-Line Disc Brake Rotor 980399R\u003c\/h2\u003e\u003cp\u003eThe Raybestos R-Line 980399R disc brake rotor is engineered for reliable braking performance on BMW X3 models. Designed as a vented, drum-in-hat type rotor, it offers effective heat dissipation and durability for consistent stopping power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with BMW X3 vehicles\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor design for improved cooling\u003c\/li\u003e\n\u003cli\u003eDrum-in-hat type rotor with integrated parking brake drum\u003c\/li\u003e\n\u003cli\u003eOverall height: 3.134 inches (79.6 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 12.589 inches (319.75 mm)\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 0.866 inches (22.0 mm)\u003c\/li\u003e\n\u003cli\u003eDiscard thickness: 0.803 inches (20.4 mm)\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole quantity: 5 with 0.654 inch (16.6 mm) diameter holes\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter: 2.953 inches (75.0 mm)\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole circle diameter: 4.724 inches (120.0 mm)\u003c\/li\u003e\n\u003cli\u003eStud\/lug hole quantity: 5\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Raybestos R-Line 980399R rotor is specifically designed for the BMW X3, ensuring precise fitment and optimal braking performance. This vented rotor features a drum-in-hat design, combining the disc braking surface with an integrated parking brake drum, which is essential for vehicles equipped with rear drum parking brakes. The rotor's nominal thickness of 0.866 inches (22.0 mm) provides a solid braking surface, while the discard thickness of 0.803 inches (20.4 mm) indicates the minimum safe thickness before replacement is necessary. The overall height of 3.134 inches (79.6 mm) and outside diameter of 12.589 inches (319.75 mm) match OEM specifications for proper installation and operation. The 5 mounting bolt holes and stud\/lug holes ensure secure attachment to the wheel hub, with a bolt circle diameter of 4.724 inches (120.0 mm) and center hole diameter of 2.953 inches (75.0 mm) for accurate alignment.\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 designed to meet or exceed factory specifications. The R-Line disc brake rotors, including part number 980399R, are engineered to provide consistent performance and durability for specific vehicle applications such as the BMW X3. This line emphasizes precise fitment and functional design, including vented rotors and drum-in-hat configurations where applicable.\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\u003eRestoring braking performance on BMW X3 models with reduced rotor thickness\u003c\/li\u003e\n\u003cli\u003eAddressing noise or vibration related to rotor surface irregularities\u003c\/li\u003e\n\u003cli\u003eEnsuring proper parking brake function with integrated drum-in-hat design\u003c\/li\u003e\n\u003cli\u003eImproving heat dissipation to reduce brake fade during extended use\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 discard thickness of 0.803 inches (20.4 mm)\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 hardware during rotor replacement for optimal system performance\u003c\/li\u003e\n\u003cli\u003eFollow BMW X3 service manual guidelines for rotor installation and brake system bleeding\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eRaybestos R-Line rotors, including part number 980399R, are manufactured to meet strict quality standards for fit, form, and function. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship. Users should consult product documentation or contact Raybestos directly for warranty terms applicable to this rotor.\u003c\/p\u003e","brand":"Raybestos","offers":[{"title":"Default Title","offer_id":44466010554549,"sku":"BDBL-980399R","price":64.87,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RS_980399R_Fro.jpg?v=1774637109","url":"https:\/\/www.partcatalog.com\/products\/raybestos-980399r-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}