{"product_id":"stoptech-128-34052l-disc-brake-rotor","title":"Stoptech 128.34052L Disc Brake Rotor - Front Left","description":"\u003ch2\u003eStopTech Sport Cross-Drilled Disc Brake Rotors Overview\u003c\/h2\u003e\u003cp\u003eThe StopTech Sport Cross-Drilled Disc Brake Rotor 128.34052L is engineered for BMW models including the 330Ci, 330i, 330xi, and Z4. Designed to enhance braking performance, this vented rotor features a cross-drilled surface for improved heat dissipation and consistent stopping power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCross-drilled surface for enhanced cooling and reduced brake fade\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 and extend rotor life\u003c\/li\u003e\n\u003cli\u003eFloating disc mounting for improved rotor alignment and performance\u003c\/li\u003e\n\u003cli\u003eCompatible with BMW 330Ci, 330i, 330xi, and Z4 models\u003c\/li\u003e\n\u003cli\u003ePart number 128.34052L ensures precise fitment and quality\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThe StopTech Sport Cross-Drilled Disc Brake Rotors are designed with a nominal thickness of 0.984 inches (25.000 mm) and a discard thickness of 0.921 inches (23.400 mm), providing a reliable service life and clear replacement indicators. The rotor's overall height measures 2.075 inches (52.700 mm), with an outside diameter of 12.795 inches (325.000 mm), matching OEM specifications for proper fitment on compatible BMW vehicles.\u003c\/p\u003e\u003cp\u003eThis rotor features a vented design with straight vanes to optimize airflow and heat dissipation during braking. The floating disc mounting system helps reduce rotor warping and improves braking consistency. The hat is coated to protect against rust and corrosion, maintaining rotor integrity over time. The rotor includes five stud\/lug holes with a diameter of 0.575 inches (14.600 mm) and a mounting bolt hole circle diameter of 4.724 inches (120.000 mm), ensuring secure installation.\u003c\/p\u003e\u003ch2\u003eAbout StopTech Sport Cross-Drilled Disc Brake Rotors\u003c\/h2\u003e\u003cp\u003eThe StopTech Sport Cross-Drilled Disc Brake Rotors line is designed for drivers seeking enhanced braking performance with reliable durability. The cross-drilled surface improves heat dissipation and reduces brake fade under demanding conditions, while the vented rotor design maintains optimal operating temperatures. This product line balances performance and longevity, making it suitable for both street and light track use on BMW vehicles such as the 330Ci, 330i, 330xi, and Z4.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eImproves brake cooling to reduce fade during aggressive driving\u003c\/li\u003e\n\u003cli\u003eHelps prevent rotor warping caused by excessive heat buildup\u003c\/li\u003e\n\u003cli\u003eRestores braking performance on BMW 330Ci, 330i, 330xi, and Z4 models\u003c\/li\u003e\n\u003cli\u003eAddresses corrosion issues with coated hat finish\u003c\/li\u003e\n\u003cli\u003eProvides consistent pedal feel and stopping power under varied conditions\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 (0.921 inches) before installation\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with BMW 330Ci, 330i, 330xi, and Z4 models using part number 128.34052L\u003c\/li\u003e\n\u003cli\u003eUse proper torque specifications on mounting bolts to avoid rotor distortion\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and hardware during rotor replacement for optimal performance\u003c\/li\u003e\n\u003cli\u003eFloating disc mounting requires correct alignment for best results\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eStopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. Each rotor undergoes rigorous quality control to ensure durability and performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.\u003c\/p\u003e","brand":"Stoptech","offers":[{"title":"Default Title","offer_id":44573326672053,"sku":"FLMN-128.34052L","price":201.15,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CE_12834052L_Fro.jpg?v=1774639405","url":"https:\/\/www.partcatalog.com\/products\/stoptech-128-34052l-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}