DBA DBA43417S Series Slotted Brake Rotor - 4000 T3 348mm Front

The DBA DBA43417S is a premium performance brake rotor from DBA's 4000 Series, engineered for drivers seeking upgraded braking performance beyond standard OE levels. This single-piece direct replacement rotor measures 348mm in diameter by 36mm in thickness and is designed for front axle applications on select BMW G-Series models.

Advanced T3 Slot Technology:

This rotor features DBA's patented T3 bi-directional slot design with 48 precision CNC-machined tri-symmetrical curved slots. These slots create multiple exit points for brake pad friction dust and gases to escape, resulting in a quieter, more responsive brake feel with smoother pedal modulation compared to traditional straight-slot designs. The symmetrical slot pattern eliminates the need for directional rotors, allowing universal left/right installation.

Premium Construction and Materials:

• Cast from XG-150 high carbon alloyed iron for extreme thermal stability and resistance to warping and cracking
• Thermal Stability Profiling (TSP) heat treatment aligns the grain structure at the atomic level for uniform material properties and enhanced durability
• Kangaroo Paw ventilation system with 144 diamond and teardrop-shaped pillars provides 30% increase in surface area and 20% improvement in cooling efficiency over conventional straight vane designs
• Thermographic heat paint markings change color at specific temperature thresholds for visual monitoring of peak braking temperatures
• Painted non-friction areas prevent rust formation and enhance appearance

Performance Benefits:

The 4000 Series rotors are ideal for high-performance street driving, spirited canyon runs, occasional track days, and vehicles that tow or carry heavy loads. The advanced metallurgy and TSP treatment enable these rotors to handle intense braking applications repeatedly while maintaining dimensional stability. The precision-machined surface ensures optimal pad contact and faster, more consistent bedding-in.

Specifications:

• Rotor Diameter: 348mm (13.70 inches)
• Rotor Thickness: 36mm
• Center Bore Height: 66.2mm
• Minimum Thickness: 34.4mm
• Position: Front Axle
• Quantity: Sold individually (single rotor)
• OEM Cross-Reference: BMW 34116860911, 34116860912

DBA rotors are precision-engineered in Australia with over 30 years of brake rotor expertise, serving both aftermarket and OE applications worldwide. Backed by a 12-month or 12,000-mile warranty from date of purchase.