How to Change the Coolant in a 2015 Beta 390 RR Race Edition
Shop parts for a 2015 Beta 390 RR Race Edition Dirt Bike.
The 2015 Beta 390 RR Race Edition stands out for riders who demand exceptionally responsive handling and a robust "Easy-To-Ride" engine philosophy. Whether you race or trail ride, proper maintenance is essential to keep the bike's high-performance four-stroke engine running cool and consistent. Coolant changes on this model are straightforward but require care with the bike's compact chassis and advanced Italian engineering. Here's a proprietary MotoSport guide tailored just for your 2015 Beta 390 RR Race Edition.
Why Changing Coolant Matters for the Beta 390 RR Race Edition
The RR's 385.6cc DOHC powerplant boasts die-cast cases for reduced weight, a new cylinder head, and an efficient oil pump system. Fresh, high-quality coolant preserves these lightweight components and maintains operating temperature under hard use, from technical climbs to high-speed stretches–especially with the model's quick-revving characteristics and tight frame packaging.
Tools & Supplies Needed
- Fresh coolant compatible with aluminum engines
- Distilled water (if diluting coolant concentrate)
- Socket and wrench set
- Flathead screwdriver
- Catch pan
- Funnel/small hose
- Clean shop rags
- Latex/nitrile gloves
Pre-Procedure Notes
- Allow the bike to cool until the engine is cold to the touch.
- Work on a stable, level surface.
- For the Race Edition, Beta's frame is compact around the engine and radiator, so take extra care with tight fasteners and avoid overtightening drain or bleed bolts.
Step-by-Step Guide
-
Remove the Seat & Side Panels
Use the push-button seat release for quick access–a Race Edition exclusive. Remove the side covers for unobstructed access to the radiator cap and overflow. -
Open Radiator Cap
Locate the radiator cap atop the right-side radiator. Unscrew slowly to release pressure. Never remove while hot. -
Drain Old Coolant
Put your catch pan under the water pump area (right side, low on the engine). Locate and remove the coolant drain bolt (usually on the lower pump/cover). A copper washer may be present–save it if undamaged.
Tip: Slightly loosen the left-side radiator lower mounting bolt to tip the radiator if you need more drainage. Be careful not to stress the hoses. -
Flush (Optional for Thoroughness)
Install drain bolt temporarily, fill radiator with distilled water, replace cap, run engine for 30-60 seconds (don't let it heat up). Drain again. Repeat until water runs clear. -
Replace Drain Bolt
Install the drain bolt and torque snugly-do not overtighten. The die-cast cases in the Beta are lightweight; excessive force can damage threads. -
Fill New Coolant
Using a funnel, fill the radiator with coolant until full. Squeeze radiator hoses by hand to remove air pockets. -
Bleed Air
For thorough air removal, briefly loosen the small bleeder bolt located on or near the top of the right radiator (if equipped) until coolant seeps out, then retighten. -
Start Engine & Top Off
Run the bike at idle for several minutes with the radiator cap off. Carefully watch for bubbling as trapped air escapes. Stop engine, top off coolant if needed, then securely reinstall cap. -
Check Level & Cleanup
After your next short ride, let the engine cool and re-check coolant level. Top up if needed. Reinstall side panels and seat with Race Edition's easy-release system.
Additional Tips for 2015 Beta 390 RR Race Owners
- Beta's six-speed transmission and responsive clutch are engineered for wide-ranging performance–adequate cooling ensures you maintain consistent shifting even on hot days.
- Inspect radiator hoses for signs of wear when changing coolant. OEM-replacement hoses for your model are available through MotoSport.
- The radiator sits close to the exhaust header; double-check for leaks after first startup and check hose routing to avoid heat damage.
- The 2015 390 RR Race Edition's lightweight chassis helps cooling performance, but the compact layout means regular checks of the radiator fins for mud or debris are essential.
- Stick with a high-quality, motorcycle-specific coolant for optimal corrosion protection inside the magnesium and aluminum engine cases. Avoid automotive coolant with silicates.
Technical Specs Reference
- Engine: 385.6cc, DOHC, four-stroke single with die-cast cases
- Fuel tank: 2.0 US gallons
- Front Suspension: 48mm Sachs USD fork, fully adjustable
- Rear Suspension: Sachs shock with linkage
Consistent coolant maintenance will keep your 2015 Beta 390 RR Race Edition performing at its best across motocross tracks and technical trails.
Related Shopping Categories
Shop Radiators for a 2015 Beta 390 RR Race Edition Dirt Bike.
Shop Coolant for a 2015 Beta 390 RR Race Edition Dirt Bike.
Shop Temperature Sensors for a 2015 Beta 390 RR Race Edition Dirt Bike.
Shop Tools for a 2015 Beta 390 RR Race Edition Dirt Bike.
Shop Radiator Hoses for a 2015 Beta 390 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.