RR Thermostat Coolant Fan Switch

This heavy-duty sensor screws directly into your radiator or thermostat housing. It constantly monitors your coolant temperature and automatically triggers your cooling fan exactly when it’s needed—and shuts it off when the engine is safe.

Why You Need This Upgrade:

• Automatic Protection: Takes the guesswork out of cooling. The fan kicks on the moment temps rise, preventing engine damage and coolant loss.

• Optimized Temperature Range: calibrated to activate before the boiling point (typically ON at 95°C / 203°F, OFF at 90°C / 194°F), keeping your engine in the sweet spot for maximum power.

• Save Your Battery: Unlike a manual switch that you might forget to turn off, this sensor cuts power to the fan once the bike cools down, saving your battery from draining.

• Reliability: Replaces old, corroded, or faulty OEM switches that fail to trigger, giving you peace of mind on long rides.