{"product_id":"dynamic-friction-631-80008l-disc-brake-rotor-rear-left","title":"Dynamic Friction 631-80008L Disc Brake Rotor - Rear Left","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThis Dynamic Friction disc brake rotor is built for a specific rear-left application and features a slotted, drilled surface with a vented design. The zinc silver hat finish and rust-resistant coating add corrosion protection, while the directional braking surface supports consistent pad contact.\u003c\/p\u003e\u003cp\u003eFits 1984-1985 Mazda RX-7, rear left. Part number 631-80008L is the reference for this application and should be matched carefully before ordering.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSlotted and drilled rotor surface for improved heat management and pad cleaning.\u003c\/li\u003e\n\u003cli\u003eVented rotor construction for better airflow through the braking surface.\u003c\/li\u003e\n\u003cli\u003eZinc silver hat finish with rust-resistant coating for added corrosion protection.\u003c\/li\u003e\n\u003cli\u003eDirectional braking surface for a defined rotation pattern.\u003c\/li\u003e\n\u003cli\u003e4-lug bolt pattern with 114.3 mm bolt circle and 66 mm center hole.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe Dynamic Friction 631-80008L is a disc brake rotor engineered for the rear-left position on the Mazda RX-7. Its slotted X drilled surface and vented construction are suited to braking systems that benefit from additional heat dissipation and a cleaner pad interface. The plain disc finish is paired with a zinc silver hat finish and rust-resistant coating to help preserve appearance and resist corrosion in service.\u003c\/p\u003e\u003cp\u003eFor buyers searching for a Mazda RX-7 rear left brake rotor, 631-80008L provides the key dimensional and design details needed for a direct application match. The 4-bolt pattern, 114.3 mm bolt circle, and 12.5 mm lug hole diameter are important fitment checks before installation.\u003c\/p\u003e\u003ch2\u003eCommon Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a worn rear brake rotor on the RX-7.\u003c\/li\u003e\n\u003cli\u003eAddressing rotor scoring, grooves, or uneven braking feel.\u003c\/li\u003e\n\u003cli\u003eRestoring proper braking surface thickness after wear.\u003c\/li\u003e\n\u003cli\u003eReplacing a rotor with corrosion on the hat or braking surface.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eConfirm the rear-left position, 4-lug pattern, 114.3 mm bolt circle, and center hole diameter before installation. Match the rotor to the vehicle’s brake setup and verify discard thickness against service limits. Part number 631-80008L should be checked against the existing rotor and application data for the Mazda RX-7.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDynamic Friction supplies this rotor with a rust-resistant coating and corrosion-protective hat finish for durable service appearance. The slotted, drilled, vented design reflects a performance-oriented brake rotor construction for the specified application.\u003c\/p\u003e","brand":"Dynamic Friction","offers":[{"title":"Default Title","offer_id":53374778704053,"sku":"HBHR-631-80008L","price":86.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63180008L_Fro.jpg?v=1790231117","url":"https:\/\/www.partcatalog.com\/products\/dynamic-friction-631-80008l-disc-brake-rotor-rear-left","provider":"PartCatalog","version":"1.0","type":"link"}