How to Change the Coolant in a 2013 Beta 450 RS SM

Shop parts for a 2013 Beta 450 RS SM Dirt Bike.

The 2013 Beta 450 RS SM is a high-performance supermoto derived from Beta's legendary enduro platform, requiring regular maintenance for peak performance. Coolant changes are essential for preventing overheating and extending the life of the engine and water pump. Here's the proprietary MotoSport procedure for a complete coolant change on your Beta 450 RS SM, with key tips specific for your machine.

What You Need

  • Pre-mixed motorcycle coolant (choose a high-quality, silicate-free formula compatible with aluminum radiators)
  • Drain pan
  • Socket set (usually 8mm or 10mm for Beta coolant drains)
  • Funnel
  • Shop towels
  • Protective gloves and eyewear

Step-by-Step Coolant Change

  1. Let the bike cool completely.
    Never open the radiator cap when the engine is hot – pressure can spray hot coolant.
  2. Remove the radiator cap.
    The cap is usually on the left side. Loosen slowly to release any remaining pressure.
  3. Locate the coolant drain bolt.
    On the 2013 Beta 450 RS SM, the drain bolt is typically found low on the water pump cover on the right (throttle) side of the engine. Place your drain pan underneath this area before loosening the bolt.
  4. Drain the coolant.
    Loosen and remove the drain bolt. Coolant will flow out – allow several minutes for a full drain. To speed up the process, gently tilt the bike towards the drain side.
  5. Flush (optional but recommended every few changes).
    If the coolant is particularly dirty or you've switched to a different coolant formula, you can flush the system with distilled water.  Reinstall the drain bolt, fill the radiator with distilled water, run the engine briefly (1–2 minutes), then repeat the draining process.
  6. Reinstall the drain bolt.
    Ensure the washer (if equipped) is in good condition and torque the bolt to factory specs. Do not overtighten.
  7. Fill with fresh coolant.
    Use a funnel to slowly fill the radiator until coolant reaches the base of the filler neck. If your model has an overflow bottle, check and fill that as well.
  8. Bleed the air from the system.
    With the radiator cap still off, gently rock the bike side to side; squeeze the radiator hoses to help trapped air escape. Add more coolant if the level drops.
  9. Start the engine.
    Briefly run the engine (1–2 minutes) to circulate coolant. Rev lightly and squeeze the hoses again to purge any last air pockets. Turn off the engine and top up the coolant if needed.
  10. Reinstall the radiator cap.
    Make sure it is fully seated and locked.
  11. Check for leaks.
    Inspect all hose connections, the drain bolt area, and under the bike.
  12. Test ride and recheck levels.
    After a cool-down period, remove the radiator cap and check the level. Top off as needed. A drop in level after the first heat cycle is normal as trapped air is purged.

Special Notes for the Beta 450 RS SM Owner

  • Beta factory recommends an annual coolant change for optimal heat transfer and corrosion protection, but heavy use or racing may require more frequent intervals.
  • This model uses aluminum radiators, so never use coolant designed for cars/trucks containing silicates, as it can damage internal surfaces over time.
  • The Beta 450 RS SM is sensitive to overheating if the system is under-filled or has air pockets. Always purge air fully during your refill.
  • Beta radiators can be slightly larger than typical enduro models, so expect capacity just over one liter. Always consult your owner's manual for exact specs and torque values.

When to Change Coolant

  • Annually for recreational use.
  • Every 6 months if frequently ridden off-road in harsh conditions, race events, or following any overheat incident.
  • Immediately if you notice visible discoloration, floating debris, or reduced coolant level without leak evidence.

Disposal

Never pour old coolant down the drain or on the ground. Take used coolant to your local auto parts store or waste facility for proper handlingthis protects the environment and complies with local regulations.

With fresh coolant, your 2013 Beta 450 RS SM will be ready to handle hot days, tough trails, and supermoto tracks with confidence. Keep coolant changes as part of your regular service routine, and enjoy extended engine life and consistent performance from your Beta.

Related Shopping Categories

Shop Radiators for a 2013 Beta 450 RS SM Dirt Bike.

Shop Coolant for a 2013 Beta 450 RS SM Dirt Bike.

Shop Temperature Sensors for a 2013 Beta 450 RS SM Dirt Bike.

Shop Tools for a 2013 Beta 450 RS SM Dirt Bike.

Shop Radiator Hoses for a 2013 Beta 450 RS SM 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.