How to Change the Coolant in a 2022 Beta 125 RR: Step-by-Step Guide

Shop parts for a 2022 Beta 125 RR Dirt Bike.

Changing the coolant in your 2022 Beta 125 RR is a vital maintenance procedure to ensure top engine performance – especially given this two-stroke model's high compression characteristics and its tendency for heat build-up on demanding rides. Beta's 125 RR features modern radiators without bleeder screws on top, a notable difference from older Beta models – that means bleeding air is handled differently compared to previous years .

Tools & Supplies Needed

  • Coolant recommended by Beta (ensure it meets specification for aluminum and magnesium engine parts)
  • Drain pan (suitable for coolant collection)
  • Protective gloves and eyewear
  • Socket set & screwdrivers
  • Funnel
  • Rags for cleanup

Step 1: Safety Prep & Bike Position

  • Place the bike on a level surface and let the engine cool completely. Coolant can cause serious burns.
  • Wear protective gloves & eyewear. Coolant is corrosive – avoid skin and eye contact.

Step 2: Access & Drain the Coolant

  • Remove the radiator cap. On the 2022 Beta 125 RR, the cap is on the left-side radiator. Loosen slowly to relieve any pressure .
  • Locate the coolant drain bolt, typically positioned at the bottom of the water pump on the right side of the engine.
  • Place a drain pan directly beneath and remove the drain bolt. Allow all coolant to fully drain.
  • If needed, gently tilt the bike from side to side to ensure complete drainage from both radiators .

Step 3: Replace the Drain Bolt & Fill New Coolant

  • Reinstall and torque the drain bolt securely, as per Beta specifications.
  • Using a funnel, slowly pour new coolant into the radiator until it reaches just above the fins inside – do not overfill.

Step 4: Bleed the Cooling System

Unlike older Betas, the 2022 model does not have bleeder screws on the radiators. Instead:

  • Once filled, squeeze the upper radiator hose several times to help liberate trapped air bubbles .
  • If working on the top end, there is a bleeder bolt on the cylinder head – crack it open until coolant flows, then close tightly .
  • Rock the bike gently side-to-side to aid coolant movement between radiators .

Step 5: Final Checks & Start Up

  • Top off coolant if the level drops after burping air.
  • Reinstall radiator cap.
  • Start the bike outdoors and let it reach operating temperature. Shut it off, allow to cool, and re-check coolant level – top off if needed.

Owner Notes for the 2022 Beta 125 RR

  • No radiator bleeder screw: Air bleeding is primarily achieved by hose squeezing and gentle rocking.
  • Use the correct coolant: This engine uses lightweight alloys sensitive to improper coolants – always use Beta-approved formulas.
  • Environmental responsibility: Collect old coolant and dispose of it according to local regulations .
  • Regular inspection: Given the 125 RR's high-revving nature, check coolant levels and radiator caps before every ride.

Why Coolant Changes Matter for Your Beta

Regular coolant maintenance prevents overheating, corrosion, and internal buildup. The 2022 Beta 125 RR benefits directly – with proper coolant circulation, you'll experience maximum engine reliability and longevity even in tough riding conditions.

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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.