TRW Automotive AfterMarket DF4790 Brake Disc

TRW Automotive AfterMarket DF4790 Brake Disc

The TRW DF4790 is a high‑performance, ventilated brake disc designed for the Land Rover Range Rover, Discovery III, and Discovery IV models. It delivers superior stopping power, heat dissipation, and durability under demanding driving conditions.

Key Features

• Ventilated Design: Integrated cooling channels reduce brake fade during prolonged use.
• High‑Carbon Composite: Enhances strength while keeping weight low, improving overall vehicle dynamics.
• Precision Machining: Tight tolerances ensure a perfect fit and consistent performance across all units.
• Corrosion Resistance: Protective coating extends service life in harsh environments.

Technical Specifications

Installation Overview

The DF4790 is engineered for a seamless fit with the existing brake system. Installation steps include:

1. Remove Existing Discs: Detach the current brake discs and clean the hub area.
2. Align Disc to Hub: Position the new disc ensuring the central hole aligns precisely with the wheel hub.
3. Tighten Fasteners: Secure the mounting bolts to the specified torque (typically 90 Nm).
4. Check Brake Pad Clearance: Verify that brake pads fit without interference and adjust as necessary.
5. Bleed Brakes: Remove air from the hydraulic system for optimal braking performance.

Performance Benefits

• Consistent Stopping Power: The high‑carbon composition maintains brake feel across temperature ranges.
• Reduced Fade: Ventilation allows heat to escape, preventing performance loss during spirited driving or heavy traffic.
• Longer Service Life: Corrosion‑resistant coating and robust material reduce wear and extend maintenance intervals.

Maintenance Tips

• Inspect discs every 10,000 km for glazing or scoring.
• Replace brake pads when pad thickness falls below 4 mm to avoid metal‑to‑metal contact.
• Keep the disc surface clean; use a non‑abrasive cleaner to remove brake dust.

Why Choose TRW DF4790?

The TRW DF4790 combines proven engineering with modern materials, offering drivers confidence in safety and performance. Its compatibility across several Land Rover models makes it an ideal upgrade for enthusiasts seeking reliable braking without compromising vehicle integrity.

Frequently Asked Questions

Is the DF4790 compatible with all Land Rover models?

No, it is specifically designed for the Range Rover (L320), Discovery III (L319), and Discovery IV (L319). Always verify model compatibility before purchase.

Can I use the same brake pads as my current system?

The DF4790 works with standard Land Rover brake pads; however, high‑performance pads may further enhance braking capability.

What is the expected lifespan of the disc?

With proper maintenance and typical driving conditions, the disc can last upwards of 60,000 km or more.

Conclusion

The TRW Automotive AfterMarket DF4790 Brake Disc stands out as a premium choice for Land Rover owners who demand reliable stopping power, durability, and ease of installation. Its ventilated, high‑carbon construction ensures that every braking event is safe, consistent, and efficient.