How to Change the Coolant in a 2021 Beta 350 RR Race Edition
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Changing the coolant in your 2021 Beta 350 RR Race Edition is an essential maintenance task to keep your bike running cool and reliable. The process is straightforward on this model, but knowing a few model-specific pointers ensures a smooth service and peak performance.
What Makes the 2021 Beta 350 RR Race Edition Unique?
This model features a liquid-cooled, four-stroke engine with a high compression ratio (13.19:1) designed for performance and durability. Unlike older Betas, the 2021 model does not have a dedicated bleeder screw on the upper radiator, thanks to improvements in the cooling system design. The coolant level is checked by sight within the radiator, and efficient filling requires basic rocking of the bike to settle air between radiators–important for complete air removal.
Recommended Coolant and Tools
- Quality motorcycle/lifetime coolant suitable for aluminum engines (such as Engine Ice or Motul)
- Socket set or screwdriver (for radiator shrouds and drain bolt)
- Drain pan
- Funnel
- Rags
- Safety gloves and eyewear
Coolant Change Steps
- Let the engine cool completely. Never open the radiator cap on a hot engine to avoid burns or injury.
- Remove the radiator shrouds/plastics as needed for clear access to the upper radiator and cap.
- Set a drain pan under the water pump site glass or lower radiator hose. Locate and carefully remove the coolant drain bolt (typically at the bottom of the water pump housing) or loosen the lower radiator hose to drain the old fluid completely.
- Allow all coolant to drain. Rock the bike gently from side to side to help move residual fluid between the two radiators for complete draining.
- Inspect and replace the radiator cap or any hoses if needed. Damage or cracks in seals compromise the system.
- Reinstall the drain bolt or hose. Use a fresh sealing washer if necessary and tighten to manufacturer torque specifications.
- Add new coolant slowly to the radiator neck using a funnel. On the 2021 Beta 350 RR Race Edition, fill until the fluid is just over the top of the radiator cores/fins – there is no air bleeder screw, so you must rock the bike gently side-to-side as you fill to work air out of both radiator sides.
- Wait for any bubbles to rise. Top off as needed until the coolant stays just above the radiator fins.
- Replace the radiator cap securely.
- Start the engine and let it idle for a minute. After shutting off, let cool and recheck the coolant level. Top off if necessary to maintain coverage of the radiator cores.
Important Model-Specific Tips
- No air bleeder screw: Use side-to-side rocking to purge air. Older models have a bleeder screw on the right radiator; the 2021 Race Edition does not.
- Check cooling fan if so equipped: The factory fan harness is prewired, with the sensor built into the cylinder head. Do not attempt to install unused "brass sensors" meant for 2-strokes.
- Capacity: Expect to use approximately 1.0 to 1.3 liters of coolant in total—always check for the proper level rather than just amount.
- Annual coolant change recommended for best performance, regardless of low mileage or riding frequency.
After Changing Coolant
Reinstall plastics, verify all connections, and inspect for leaks after your first ride. Monitor the coolant level again, as small air pockets may settle and require a final top-up. Using a high-quality premixed motorcycle coolant ensures corrosion protection for your aluminum engine and optimal cooling even under extreme race conditions.
Regular maintenance like coolant changes keeps your Beta 350 RR Race Edition ready for the track, woods, or wherever your ride takes you.
Related Shopping Categories
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Shop Radiator Hoses for a 2021 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.