{"product_id":"powerstop-ar8644-disc-brake-rotor","title":"PowerStop AR8644 Disc Brake Rotor - Rear","description":"\u003ch2\u003eReliable Rear Disc Brake Rotor for Chevrolet and GMC Trucks\u003c\/h2\u003e\u003cp\u003eThe Power Stop AR8644 rear disc brake rotor is engineered to meet the exact specifications of Chevrolet and GMC heavy-duty trucks. Designed for vehicles such as the Silverado 2500 HD and Sierra 3500 HD, this rotor ensures consistent braking performance and durability under demanding conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Chevrolet Avalanche 2500, Express 2500\/3500, Savana 2500\/3500, Sierra 1500\/2500\/3500, Silverado 2500\/3500, Suburban 2500, and Yukon XL 2500\u003c\/li\u003e\n\u003cli\u003ePart number AR8644 for precise identification and fitment\u003c\/li\u003e\n\u003cli\u003eVented disc design for improved heat dissipation\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 1.15 inches (29.20 mm) with discard thickness at 1.06 inches (27.00 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter of 13.00 inches (330.00 mm) for proper fitment\u003c\/li\u003e\n\u003cli\u003eMounting bolt hole circle diameter of 6.50 inches (165.10 mm) with 8 stud\/lug holes\u003c\/li\u003e\n\u003cli\u003eOverall height of 3.60 inches (91.40 mm) to match OE specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Power Stop - Rear OE Stock Replacement Brake Rotor Line\u003c\/h2\u003e\u003cp\u003eThe Power Stop - Rear OE Stock Replacement Brake Rotor line is designed to provide a direct replacement for original equipment rotors on rear axles. This product line focuses on maintaining factory specifications, ensuring compatibility and reliable braking performance for heavy-duty Chevrolet and GMC trucks. The AR8644 rotor is part of this line, offering a vented rotor design that supports heat management during extended braking.\u003c\/p\u003e\u003ch2\u003eTechnical Details and Performance\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor features a vented design that helps dissipate heat more effectively than solid rotors, reducing the risk of brake fade during heavy use. The nominal thickness of 1.15 inches (29.20 mm) ensures structural integrity, while the discard thickness of 1.06 inches (27.00 mm) indicates the minimum safe thickness before replacement is necessary. With an outside diameter of 13.00 inches (330.00 mm) and an overall height of 3.60 inches (91.40 mm), the AR8644 rotor matches the original equipment dimensions for a precise fit on compatible Chevrolet and GMC models.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rear brake rotors on Chevrolet Silverado 2500 HD and GMC Sierra 3500 HD\u003c\/li\u003e\n\u003cli\u003eAddresses brake pulsation and vibration issues caused by uneven rotor surfaces\u003c\/li\u003e\n\u003cli\u003eRestores braking efficiency lost due to rotor thinning or damage\u003c\/li\u003e\n\u003cli\u003eHelps eliminate noise and squealing associated with damaged rotors\u003c\/li\u003e\n\u003cli\u003eSupports safe towing and heavy load braking demands on trucks like the Chevrolet Avalanche 2500 and GMC Yukon XL 2500\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the vehicle is securely lifted and supported before beginning installation. Remove the wheel and caliper assembly to access the rear rotor. Clean the hub surface to remove rust and debris for proper rotor seating. Verify the rotor thickness before installation to confirm it meets or exceeds the discard thickness. Torque all mounting bolts to manufacturer specifications. It is recommended to inspect brake pads and replace them if worn to maintain optimal braking performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Power Stop AR8644 rotor is manufactured to meet or exceed OEM standards for fit, form, and function. While this product does not include a rust-resistant coating, it is engineered for durability under normal operating conditions. Power Stop provides a limited warranty against defects in materials and workmanship, ensuring confidence in the product's reliability for Chevrolet and GMC rear brake applications.\u003c\/p\u003e","brand":"PowerStop","offers":[{"title":"Default Title","offer_id":43590208848053,"sku":"BHKQ-AR8644","price":103.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/P8_AR8644_Fro.jpg?v=1774635269","url":"https:\/\/www.partcatalog.com\/products\/powerstop-ar8644-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}