Stoptech 127.34018R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.34018R) are engineered for BMW models including the 318i, 318is, 325e, 325es, 325i, 325is, and 325iX. These rotors provide reliable braking performance with a vented design and a coated hat finish to resist corrosion.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Vented rotor design to reduce brake fade under heavy use
• Coated hat finish for enhanced corrosion resistance
• Floating disc mounting for better rotor alignment and performance
• Compatible with BMW 318i, 318is, 325e, 325es, 325i, 325is, and 325iX models
• Part Number: 127.34018R

Product Line Details: StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to offer enhanced braking performance through advanced rotor surface technology. The combination of cross-drilled holes and precision slots helps to dissipate heat more effectively and remove brake dust and gases, which can improve braking consistency. This product line features vented rotors with a floating disc mounting system, which aids in maintaining rotor alignment and reducing warping during demanding driving conditions.

Technical Specifications and Features

This disc brake rotor features a nominal thickness of 0.862 inches (21.9 mm) and a discard thickness of 0.803 inches (20.4 mm), ensuring a durable lifespan before replacement is necessary. The rotor has an outside diameter of 10.236 inches (260 mm) and an overall height of 1.386 inches (35.2 mm). The rotor includes a single miscellaneous hole and uses a straight vane style for efficient cooling. It is designed with four stud/lug holes, each 0.591 inches (15 mm) in diameter, and a mounting bolt hole circle diameter of 3.937 inches (100 mm). The center hole diameter measures 2.598 inches (66 mm). The rotor weighs approximately 11.27 lbs (5.12 kgs) and does not include bearings or an ABS tone ring.

Applications and Problem Solving

• Improves braking performance on BMW 318i, 318is, 325e, 325es, 325i, 325is, and 325iX models
• Reduces brake fade during aggressive or prolonged braking
• Helps prevent rotor warping and uneven wear
• Enhances heat dissipation to maintain consistent brake feel
• Minimizes brake dust buildup on pads for cleaner braking surfaces

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Verify compatibility with vehicle make and model using part number 127.34018R
• Use proper torque specifications for mounting bolts on the 4-lug pattern
• Inspect brake pads and hardware during rotor replacement for optimal performance
• Floating disc mounting requires correct alignment to avoid noise or vibration

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet strict quality standards for durability and performance. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.