AS3 Performance high-pressure radiator caps are a must - have for serious racers. When your motor runs at high temperatures, these caps prevent coolant loss from the radiators, ensuring your bike keeps going and helping you cross the finish line. The longer the motor runs hot, the more engine damage there can be, so this cap is your engine's protector.
**Will Fit**:
- 2021 Rieju MR 300 Racing
- 2021 Rieju MR 300 Pro
**Features**:
- Stops coolant overflow during high - temperature runs.
- Withstands more pressure than standard caps.
- Fits all Rieju MR 300 radiators without any modifications.
- Has a polished aluminium finish with AS3 Performance branding.
- From a UK company, comes with a 12 - month warranty.
- The cap you see in the picture is exactly what you'll get.
Using this AS3 Performance radiator cap is easy. Just remove your old radiator cap and replace it with this high - pressure one. Make sure it's tightly sealed. When using your bike, especially during high - temperature races, this cap will work to prevent coolant overflow.
Here are some important notes. If you notice any signs of coolant leakage, check if the cap is properly installed. Also, don't forget that the longer the motor runs at high temperatures, the more strain it puts on the engine, so try to avoid excessive high - temperature operation.
For maintenance, periodically inspect the cap for any signs of wear or damage. You can clean it with a mild cleaner and a soft cloth. Since it comes with a 12 - month warranty from a UK company, if you encounter any problems within this period, reach out to the manufacturer for assistance.
