{"product_id":"stoptech-127-34052r-disc-brake-rotor","title":"Stoptech 127.34052R Disc Brake Rotor - Front Right","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 Rotors (part number 127.34052R) are engineered for BMW models including the 330Ci, 330i, 330xi, and Z4. Designed to enhance braking performance, these rotors feature a vented, slotted, and cross-drilled surface to improve heat dissipation and maintain consistent stopping power under demanding conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCross-drilled and slotted surface for improved heat dissipation and debris removal\u003c\/li\u003e\n\u003cli\u003eVented rotor design to reduce brake fade during extended 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 330Ci, 330i, 330xi, and Z4 models\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 0.984 inches (25.000 mm) with discard thickness at 0.921 inches (23.400 mm)\u003c\/li\u003e\n\u003cli\u003eOverall diameter of 12.795 inches (325.000 mm) and overall height of 2.075 inches (52.700 mm)\u003c\/li\u003e\n\u003cli\u003eFive lug holes with a 4.724 inch (120.000 mm) bolt circle diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe StopTech Sport Cross-Drilled \u0026amp; Slotted Disc Brake Rotors are designed to meet the rigorous demands of BMW drivers who require reliable braking performance. The vented rotor construction features straight vanes that promote efficient airflow, helping to dissipate heat generated during braking. The cross-drilled and slotted surface pattern aids in removing brake dust, gas, and water from the rotor surface, which helps maintain consistent pad contact and reduces the risk of brake fade. The coated hat finish provides corrosion resistance, protecting the rotor’s central mounting area from rust and extending its service life.\u003c\/p\u003e\u003cp\u003eWith a floating disc mounting design, these rotors accommodate thermal expansion and contraction, reducing the risk of warping under high-temperature conditions. The rotor’s dimensions, including a 12.795 inch (325 mm) outside diameter and 0.984 inch (25 mm) nominal thickness, are optimized for the specified BMW models, ensuring proper fitment and performance.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBMW 330Ci\u003c\/li\u003e\n\u003cli\u003eBMW 330i\u003c\/li\u003e\n\u003cli\u003eBMW 330xi\u003c\/li\u003e\n\u003cli\u003eBMW Z4\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis rotor is ideal for drivers looking to replace worn or damaged rotors or upgrade their braking system for improved heat management and consistent stopping power.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Rotor\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake fade caused by excessive heat buildup during aggressive driving\u003c\/li\u003e\n\u003cli\u003eUneven brake pad wear due to poor rotor surface condition\u003c\/li\u003e\n\u003cli\u003eCorrosion and rust on rotor hats affecting mounting stability\u003c\/li\u003e\n\u003cli\u003eReduced braking efficiency in wet conditions due to water accumulation\u003c\/li\u003e\n\u003cli\u003eWarping or cracking from thermal stress during extended braking\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with BMW 330Ci, 330i, 330xi, and Z4 models before installation\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and replace if worn to maintain optimal braking performance\u003c\/li\u003e\n\u003cli\u003eTorque mounting bolts to manufacturer specifications to avoid rotor distortion\u003c\/li\u003e\n\u003cli\u003eCheck for proper rotor runout after installation to prevent vibration\u003c\/li\u003e\n\u003cli\u003eBleed brake system if necessary to remove air and ensure firm pedal feel\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 strict quality standards, ensuring durability and consistent performance. The coated hat finish protects against corrosion, and the vented design helps maintain structural integrity under heat stress. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed warranties covering defects in materials and workmanship.\u003c\/p\u003e","brand":"Stoptech","offers":[{"title":"Default Title","offer_id":44572300378293,"sku":"FLMN-127.34052R","price":182.32,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/CE_12734052R_Fro.jpg?v=1774639210","url":"https:\/\/www.partcatalog.com\/products\/stoptech-127-34052r-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}