TF859 Terrafirma Heavy Duty 24-Spline Drive Flange Set

The Terrafirma TF859 Heavy Duty 24-Spline Drive Flange Set is a serious upgrade over factory flanges, built to handle high torque, heavy loads, and tough off-road use. Made from high-strength steel with increased spline engagement, these flanges are engineered to resist wear and spline damage far better than OEM units.

Each flange includes a threaded steel dust cap with an O-ring seal, keeping mud, water, and debris out of your axle ends.

Fitment Notes – Important:

• Designed for 24-spline axles.

• These flanges only work with steel wheels.

• If you want to use them with alloy wheels, you must install Terrafirma TF301 wheel spacers.

Compatible Models (with steel wheels):

• Discovery I (1994–1999, D1)

• Range Rover Classic (1990–1995, RRC)

• Defender  Classic  

These are Terrafirma upgrades, not OEM. They provide maximum strength and longevity, making them ideal for off-road builds and vehicles running oversized tires.

Supersession Part Numbers

Terrafirma TF859 replaces factory drive flange number RUC105200

Frequently Asked Questions (FAQs)

• Will these fit alloy wheels on my Discovery I?
  Not directly. These flanges only fit steel wheels. To use them with alloy wheels, install Terrafirma TF301 spacers.

• Are these stronger than OEM?
  Yes—Terrafirma designed these flanges with greater spline contact and thicker construction, making them more durable than stock parts.