How to Change the Coolant in a 2018 Beta 350 RR Race Edition

Shop parts for a 2018 Beta 350 RR Race Edition Dirt Bike.

The 2018 Beta 350 RR Race Edition is a performance-oriented dirt bike built for demanding off-road conditions. Maintaining your cooling system is critical for protecting the engine from overheating, especially during technical rides where airflow may be limited. Below is a step-by-step guide to changing the coolant–be sure to read all notes specific to your bike's design.

Tools & Supplies Needed

  • New coolant—choose an aluminum-compatible, high-performance formula
  • Phillips screwdriver
  • Socket set
  • Funnel
  • Drain pan
  • Protective gloves

Step-by-Step Instructions

  1. Ensure the bike is cool
    Let the engine reach ambient temperature to avoid burns and ensure pressure isn't present in the cooling system.
  2. Remove the seat & side panels
    This gives access to the radiator cap and reserve tank. Use a suitable screwdriver or socket as needed.
  3. Locate the drain bolt
    On the 2018 Beta 350 RR Race Edition, the coolant drain is typically on the water pump cover or the lower right engine case.
  4. Position a drain pan below the drain bolt
    Open the radiator cap to let air in, then remove the drain bolt. Allow the coolant to drain completely.
  5. Flush the system (optional but recommended)
    Replace the drain bolt temporarily, fill the radiator with distilled water, run the engine for a minute, then drain again. Repeat if debris is present.
  6. Replace the drain bolt and tighten securely
  7. Fill with new coolant
    Pour coolant slowly into the radiator until just above the core fins. The recommended capacity is slightly over 1 liter, depending on how much the system holds. Check your manual for exact volume.
  8. Rock the bike gently side-to-side
    This helps distribute coolant between the radiators–the Beta Race Editions after 2014 generally do not use bleeder screws, unlike earlier models.
  9. Bleed out any air
    Start the bike briefly and shut down. Check and top off as needed. Radiator fluid should rest just above the fins. Reinstall the cap once proper level is reached.
  10. Reinstall seat and panels
  11. Run a heat cycle
    Allow the engine to reach fan-temperature or until fully warm. Let it cool back to ambient, then check coolant level once more and top off if needed.

Noteworthy MMY Model Notes

  • The Race Edition omits bleeder screws found on pre-2014 models. Distribute coolant evenly by rocking the bike side-to-side instead.
  • The Beta 350's cooling system can run hot in slow terrain. Installation of a factory cooling fan is recommended for riders who experience heat buildup, especially in woods or technical rides.
  • Only use coolants compatible with aluminum and magnesium–never mix different types. Some Beta owners prefer premium brands designed specifically for high-performance or racing environments.
  • The cooling system is small—be cautious when adding coolant to avoid overflow, and always check the level after the first ride.
  • A small, regular top-off is normal for these models after the first heat cycle, as air is purged from the system.

Maintenance Tips

  • Change coolant annually, or more frequently in extreme off-road conditions.
  • Always run the bike through a complete heat cycle after coolant changes and monitor the level after it cools.
  • Use a funnel to prevent spills—Beta radiators are close to plastics, which stain easily.
  • Inspect hoses and radiator for leaks or damage when panels are removed.

Proper coolant maintenance keeps your Beta 350 RR Race Edition running at peak performance and protects against expensive engine damage. Be meticulous during the process–your ride will thank you on the trail.

Related Shopping Categories

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Shop Radiator Hoses for a 2018 Beta 350 RR Race Edition Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.