{"product_id":"stoptech-127-34109l-disc-brake-rotor","title":"Stoptech 127.34109L Disc Brake Rotor - Rear 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 127.34109L) is engineered for BMW 135i and 135is models. Designed to enhance braking performance, this vented rotor features a slotted and drilled surface to improve heat dissipation and maintain consistent stopping power under demanding conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with BMW 135i and 135is\u003c\/li\u003e\n\u003cli\u003ePart Number: 127.34109L\u003c\/li\u003e\n\u003cli\u003eCross-drilled and slotted surface for improved cooling and debris removal\u003c\/li\u003e\n\u003cli\u003eVented rotor design with straight vane style for efficient heat management\u003c\/li\u003e\n\u003cli\u003eCoated hat finish to resist corrosion\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 0.858 inches (21.8 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 12.756 inches (324 mm)\u003c\/li\u003e\n\u003cli\u003eMounting bolt pattern: 5 lug holes, 4.724 inches (120 mm) bolt circle diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor is part of the StopTech Sport Cross-Drilled \u0026amp; Slotted Disc Brake Rotors line, which focuses on delivering enhanced braking performance through advanced rotor surface technology. The cross-drilled and slotted design helps to evacuate gases, dust, and water from the braking surface, reducing brake fade and improving pad bite. The vented rotor with straight vanes promotes airflow to dissipate heat efficiently, which is critical for maintaining braking consistency during spirited driving or track use.\u003c\/p\u003e\u003cp\u003eThe rotor features a coated hat finish that provides corrosion resistance, extending the rotor's service life. With a nominal thickness of 0.858 inches (21.8 mm) and a discard thickness of 0.803 inches (20.4 mm), this rotor meets strict specifications for durability and performance. The overall height is 3.035 inches (77.1 mm), and the center hole diameter is 2.953 inches (75 mm), ensuring proper fitment on compatible BMW 135i and 135is vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReduces brake fade during aggressive driving or track conditions\u003c\/li\u003e\n\u003cli\u003eImproves heat dissipation to prevent rotor warping\u003c\/li\u003e\n\u003cli\u003eEnhances braking response and pad bite with slotted and drilled surface\u003c\/li\u003e\n\u003cli\u003eMinimizes brake dust buildup for cleaner braking components\u003c\/li\u003e\n\u003cli\u003eResists corrosion with coated hat finish for longer rotor life\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with BMW 135i and 135is models before installation\u003c\/li\u003e\n\u003cli\u003eCheck rotor thickness and discard thickness to confirm replacement timing\u003c\/li\u003e\n\u003cli\u003eUse proper torque specifications for the 5 lug bolts on the 120 mm bolt circle\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and hardware during rotor replacement for optimal performance\u003c\/li\u003e\n\u003cli\u003eFollow manufacturer guidelines for bedding-in new rotors and pads\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 rotors undergo rigorous quality control to ensure consistent performance and durability. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Consult the product documentation or manufacturer for exact warranty terms.\u003c\/p\u003e","brand":"Stoptech","offers":[{"title":"Default Title","offer_id":44572334620853,"sku":"FLMN-127.34109L","price":201.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CE_12734109L_Fro.jpg?v=1774639221","url":"https:\/\/www.partcatalog.com\/products\/stoptech-127-34109l-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}