{"product_id":"centric-121-66039-disc-brake-rotor","title":"Centric 121.66039 Disc Brake Rotor - Rear","description":"\u003ch2\u003eReliable Disc Brake Rotor for Chevrolet and GMC Vehicles\u003c\/h2\u003e\u003cp\u003eThe Centric C-TEK Standard Disc Brake Rotor 121.66039 is engineered to provide consistent braking performance for Chevrolet Blazer, GMC Jimmy, and Sonoma models. Designed with precision, this vented rotor ensures effective heat dissipation and durability under demanding driving conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 121.66039\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet Blazer, GMC Jimmy, and Sonoma\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor with smooth surface finish\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 11.614 inches (295 mm)\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 0.787 inches (20.000 mm)\u003c\/li\u003e\n\u003cli\u003eDiscard thickness: 0.728 inches (18.500 mm)\u003c\/li\u003e\n\u003cli\u003eOverall height: 2.874 inches (73.000 mm)\u003c\/li\u003e\n\u003cli\u003e5 lug holes with 0.516 inch (13.100 mm) diameter\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter: 2.783 inches (70.700 mm)\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole circle diameter: 120.700 mm (4.752 inches)\u003c\/li\u003e\n\u003cli\u003eWeight: 14 lbs (6.360 kgs)\u003c\/li\u003e\n\u003cli\u003eABS tone ring not included\u003c\/li\u003e\n\u003cli\u003eFloating center mounting design with straight vane style\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the C-TEK Standard Disc Brake Rotors Line\u003c\/h2\u003e\u003cp\u003eThe C-TEK Standard Disc Brake Rotors line by Centric offers a balance of quality and value for standard braking applications. These rotors are designed to meet or exceed OEM specifications, providing reliable stopping power and consistent performance. The 121.66039 rotor features a vented design to improve heat dissipation, which helps reduce brake fade during extended use on Chevrolet Blazer, GMC Jimmy, and Sonoma vehicles.\u003c\/p\u003e\u003ch2\u003eTechnical Details and Performance\u003c\/h2\u003e\u003cp\u003eThis vented disc brake rotor has a smooth surface type that ensures even pad contact and wear. The nominal thickness of 0.787 inches (20.000 mm) and discard thickness of 0.728 inches (18.500 mm) define the usable rotor life before replacement is necessary. The rotor’s overall height of 2.874 inches (73.000 mm) and outside diameter of 11.614 inches (295 mm) are engineered for precise fitment and optimal braking efficiency. The floating center mounting design and straight vane style enhance rotor cooling and structural integrity.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rotors causing brake pulsation\u003c\/li\u003e\n\u003cli\u003eAddressing reduced braking performance due to rotor thickness below discard limits\u003c\/li\u003e\n\u003cli\u003eEliminating noise and vibration from uneven rotor surfaces\u003c\/li\u003e\n\u003cli\u003eImproving heat dissipation to prevent brake fade on Chevrolet Blazer, GMC Jimmy, and Sonoma\u003c\/li\u003e\n\u003cli\u003eUpgrading from solid to vented rotors for better thermal management\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the rotor thickness is measured before installation to confirm it meets nominal specifications. Clean the rotor surface to remove any protective coatings or contaminants. Verify the mounting bolt hole circle diameter and lug hole dimensions match the vehicle hub. Since this rotor does not include bearings or an ABS tone ring, reuse existing components if applicable. Proper torque specifications should be followed when securing the rotor to avoid warping.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eCentric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. Each rotor undergoes quality control inspections to ensure dimensional accuracy and material integrity. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Refer to Centric’s official documentation for complete warranty information.\u003c\/p\u003e","brand":"Centric","offers":[{"title":"Default Title","offer_id":44571114569909,"sku":"BKNJ-121.66039","price":51.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CE_12166039_Fro.jpg?v=1774638781","url":"https:\/\/www.partcatalog.com\/products\/centric-121-66039-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}