{"product_id":"stoptech-127-34124l-disc-brake-rotor","title":"Stoptech 127.34124L Disc Brake Rotor - Front Left","description":"\u003ch2\u003eStopTech Sport Cross-Drilled \u0026amp; Slotted Disc Brake Rotors Overview\u003c\/h2\u003e\u003cp\u003eThe StopTech Sport Cross-Drilled \u0026amp; Slotted Disc Brake Rotor (Part Number 127.34124L) is engineered for BMW models including the 535d, 535i, 640i, and ActiveHybrid 5 series. Designed to enhance braking performance, this vented rotor features a coated hat finish and a floating disc mounting system for improved heat dissipation and durability.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCross-drilled and slotted surface for efficient heat and gas dissipation\u003c\/li\u003e\n\u003cli\u003eVented rotor design to reduce brake fade under heavy use\u003c\/li\u003e\n\u003cli\u003eCoated hat finish to resist corrosion and extend rotor life\u003c\/li\u003e\n\u003cli\u003eFloating disc mounting for better thermal expansion management\u003c\/li\u003e\n\u003cli\u003eCompatible with BMW 535d, 535i, 640i, and ActiveHybrid 5 models\u003c\/li\u003e\n\u003cli\u003eDisc outside diameter: 13.701 inches (348 mm)\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 1.181 inches (30 mm); discard thickness: 1.118 inches (28.4 mm)\u003c\/li\u003e\n\u003cli\u003e5 lug holes with 0.654 inch (16.6 mm) diameter and 120 mm bolt circle diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis StopTech Sport Cross-Drilled \u0026amp; Slotted Disc Brake Rotor (127.34124L) is specifically designed for select BMW vehicles such as the 535d, 535i, 640i, and ActiveHybrid 5. The rotor features a vented design that improves airflow to reduce heat buildup during braking, which helps maintain consistent stopping power. The cross-drilled and slotted surface enhances brake pad bite and assists in removing brake dust and gases, contributing to improved braking efficiency and reduced fade.\u003c\/p\u003e\u003cp\u003eThe rotor’s coated hat finish provides corrosion resistance, protecting the rotor’s structural integrity over time. The floating disc mounting allows for slight movement between the rotor and hat, accommodating thermal expansion and reducing the risk of warping. With an outside diameter of 13.701 inches (348 mm) and a nominal thickness of 1.181 inches (30 mm), this rotor meets OEM specifications for the listed BMW models.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eImproves braking performance on BMW 535d, 535i, 640i, and ActiveHybrid 5 vehicles\u003c\/li\u003e\n\u003cli\u003eReduces brake fade during aggressive or repeated braking\u003c\/li\u003e\n\u003cli\u003eMinimizes rotor warping caused by thermal stress\u003c\/li\u003e\n\u003cli\u003eHelps prevent corrosion-related rotor damage\u003c\/li\u003e\n\u003cli\u003eEnhances brake pad cleaning and gas evacuation for consistent stopping power\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure rotor thickness is above discard thickness (1.118 inches \/ 28.4 mm) before installation\u003c\/li\u003e\n\u003cli\u003eCompatible with 5-lug wheel hubs with 120 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eABS tone ring is not included; verify compatibility with vehicle ABS system\u003c\/li\u003e\n\u003cli\u003eUse proper torque specifications for mounting bolts to avoid rotor distortion\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and hardware during installation for optimal performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eStopTech Sport Cross-Drilled \u0026amp; Slotted Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated hat finish and vented design contribute to long-term durability and consistent braking performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Refer to StopTech or authorized distributors for exact warranty terms.\u003c\/p\u003e","brand":"Stoptech","offers":[{"title":"Default Title","offer_id":44572335014069,"sku":"FLMN-127.34124L","price":271.24,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CE_12734124L_Fro.jpg?v=1774639222","url":"https:\/\/www.partcatalog.com\/products\/stoptech-127-34124l-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}