{"product_id":"perfect-stop-6621000-disc-brake-rotor-front","title":"Perfect Stop 6621000 Disc Brake Rotor - Front","description":"\u003ch2\u003eOverview of Perfect Stop Gray Armor-Plate Premium Rotor\u003c\/h2\u003e\u003cp\u003eThe Perfect Stop Gray Armor-Plate, Premium disc brake rotor (part number 6621000) is engineered for reliable braking performance on Chevrolet Cobalt and HHR models. Designed with vented construction and a smooth surface, this rotor supports effective heat dissipation and consistent stopping power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Chevrolet Cobalt and HHR vehicles\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor design for improved cooling\u003c\/li\u003e\n\u003cli\u003eOverall diameter of 12.421 inches (315.5 mm)\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 1.008 inches (25.6 mm) with discard thickness at 0.945 inches (24.0 mm)\u003c\/li\u003e\n\u003cli\u003eFive mounting bolt holes with a 4.331 inch (110.0 mm) bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter of 2.579 inches (65.5 mm)\u003c\/li\u003e\n\u003cli\u003eSurface type: smooth, no ABS tone ring included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Gray Armor-Plate, Premium Product Line\u003c\/h2\u003e\u003cp\u003eThe Gray Armor-Plate, Premium line from Perfect Stop focuses on delivering durable rotors with enhanced surface protection. This product line features a premium coating designed to resist corrosion and extend rotor life, making it suitable for drivers seeking dependable braking components for their Chevrolet Cobalt or HHR. The vented rotor design in this line helps maintain optimal operating temperatures during braking.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor, part number 6621000, is specifically manufactured to meet the specifications required by Chevrolet Cobalt and HHR models. The rotor's vented design allows air to flow between the rotor surfaces, reducing heat buildup and minimizing brake fade during extended use. With a smooth surface finish, it ensures consistent pad contact and braking efficiency. The rotor measures 12.421 inches in outside diameter and has a nominal thickness of 1.008 inches, with a discard thickness of 0.945 inches, indicating when replacement is necessary. The five mounting bolt holes and 4.331 inch bolt circle diameter provide secure fitment, while the 2.579 inch center hole diameter aligns precisely with the vehicle hub.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rotors on Chevrolet Cobalt and HHR\u003c\/li\u003e\n\u003cli\u003eAddresses brake noise and vibration caused by uneven rotor surfaces\u003c\/li\u003e\n\u003cli\u003eHelps reduce brake fade during heavy or prolonged braking\u003c\/li\u003e\n\u003cli\u003ePrevents corrosion-related rotor damage with premium coating\u003c\/li\u003e\n\u003cli\u003eRestores proper rotor thickness for safe braking performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the rotor surface is clean and free of debris before installation. Verify the rotor thickness is above the discard thickness of 0.945 inches to maintain safety standards. Use the correct torque specifications for the five mounting bolts to avoid rotor warping. This rotor does not include an ABS tone ring, so confirm compatibility with your vehicle's braking system. Proper bedding-in of new rotors and pads is recommended to optimize braking performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003ePerfect Stop rotors undergo rigorous quality control to meet OEM standards for fit and function. The Gray Armor-Plate, Premium rotors feature a corrosion-resistant coating to extend service life. While specific warranty details are not provided, Perfect Stop products are designed to comply with industry standards for durability and performance.\u003c\/p\u003e","brand":"Perfect Stop","offers":[{"title":"Default Title","offer_id":51806146035893,"sku":"FCKT-6621000","price":50.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WY_6621000_Fro.jpg?v=1774642568","url":"https:\/\/www.partcatalog.com\/products\/perfect-stop-6621000-disc-brake-rotor-front","provider":"PartCatalog","version":"1.0","type":"link"}