TRW Automotive AfterMarket DF4345 Brake Disc

TRW Automotive AfterMarket DF4345 Brake Disc

The TRW DF4345 brake disc is a high‑performance, ventilated rotor designed for front‑wheel braking systems on a wide range of Mitsubishi vehicles. Manufactured by TRW, a leader in automotive safety components, this disc delivers reliable stopping power while maintaining durability and heat dissipation under demanding driving conditions.

Key Features

• Ventilated Design: The rotor incorporates multiple internal channels that allow air to flow through the disc, effectively reducing heat buildup during heavy braking. This ventilation improves brake performance and extends component life.
• Sturdy Construction: Made from high‑strength steel alloy, the DF4345 offers excellent resistance to wear and corrosion. Its robust build ensures consistent braking force over thousands of miles.
• Precision Machining: Each disc is machined to exact tolerances, guaranteeing a perfect fit on the hub and smooth interaction with brake pads. This precision reduces vibration and noise during operation.
• Compatibility: The rotor is engineered for front‑wheel applications on Mitsubishi models such as the Galant Mk V, Mk VI, Mk VII, Lancer 5, and other related vehicles. It matches the required bore size, thickness, and mounting pattern specified by TRW.
• Heat Management: The ventilated structure dissipates heat efficiently, preventing brake fade in high‑performance or heavy‑load scenarios such as towing or spirited driving.

Technical Specifications

Installation Overview

Installing the TRW DF4345 requires standard brake system tools and a methodical approach to ensure safety and performance.

1. Preparation: Secure the vehicle on jack stands, remove the front wheel, and disconnect the brake caliper. Keep all hardware organized for reassembly.
2. Rotor Removal: Loosen and remove the rotor mounting bolts. If the disc is stuck due to rust or heat expansion, gently tap with a rubber mallet to free it.
3. Inspection: Check the hub surface for damage or contamination. Clean with brake cleaner and inspect the caliper pistons for wear.
4. Installation: Place the new DF4345 onto the hub, aligning the mounting holes. Tighten bolts to the manufacturer’s torque specification in a star pattern.
5. Caliper Reassembly: Compress the caliper pistons using a C‑ring or piston compressor tool. Install the brake pads and reattach the caliper bracket.
6. Bleeding: Bleed the brake system to remove air bubbles, ensuring optimal hydraulic pressure.
7. Final Checks: Verify that the rotor is free of wobble, the brakes feel firm, and the wheel spins smoothly. Reapply anti‑seize compound if recommended by TRW.

Performance Benefits

• Consistent Stopping Power: The ventilated design maintains lower operating temperatures, which translates to reliable braking performance even during repeated hard stops.
• Reduced Brake Fade: By efficiently dissipating heat, the DF4345 minimizes fade that can occur in high‑temperature environments or heavy traffic conditions.
• Longer Service Life: The robust steel alloy and precision machining reduce wear on brake pads and calipers, extending maintenance intervals.
• Improved Ride Comfort: Smooth rotor surfaces reduce vibration and noise, contributing to a quieter driving experience.

Maintenance Tips

• Inspect the rotors regularly for scoring or glazing. Replace if surface damage exceeds manufacturer guidelines.
• Keep brake fluid fresh; replace according to the vehicle’s service schedule to maintain hydraulic integrity.
• Use high‑quality brake pads compatible with TRW DF4345 to ensure optimal friction and longevity.
• Avoid driving on wet or icy roads for extended periods without braking, as this can cause heat buildup in the rotors.

Why Choose TRW DF4345?

The TRW DF4345 brake disc combines proven engineering with modern manufacturing techniques. Its ventilated architecture and high‑strength construction make it a dependable choice for drivers who demand safety, performance, and durability from their braking system.

Conclusion

For Mitsubishi owners seeking a reliable front‑wheel brake disc that delivers consistent stopping power and long-term resilience, the TRW DF4345 stands out as an excellent option. Its ventilated design, precise fitment, and robust material composition ensure that every braking event is handled with confidence and precision.