PROX Air Filter for BETA RR 250, RR 300, RR 350, RR 390, RR 430, RR 480 2020-2026

The PROX 52.63020 air filter is designed for BETA RR 250, RR 300, RR 350, RR 390, RR 430, RR 480 from 2020 to 2026. The air filter stops dust and sand before they get into the engine. A single grain of sand is enough to score a cylinder: a clean, well-oiled and properly sealed filter is the best insurance for your engine.

Specifications

• Brand: PROX
• Manufacturer part number: 52.63020

When to replace it?

• Foam hardened, torn or coming away from its frame.
• Traces of dust behind the filter, in the intake boot.
• Filter that no longer gets its shape back after cleaning.

Clean and oil the filter after every dusty ride, and at least at the intervals given in the manual; replace it as soon as the foam hardens, tears or comes away from the frame. With two filters, you always have a clean one ready to go.

Fitting tips

1. Wash the filter with air filter cleaner, rinse it and let it dry completely.
2. Soak it in air filter oil, then squeeze out the excess without wringing the foam.
3. Lightly grease the sealing rim for a perfect seal.
4. Fit the filter flat on its cage, with no creases, and check that it seals all the way round.

Why PROX?

Founded in 1975 and based near Amsterdam, ProX specialises in engine and clutch wear parts for off-road bikes. The brand has most of its range made in Japan, by OEM suppliers, for quality on a par with the original parts.

Spare parts and items to plan

• Air filter oil : LIQUI MOLY 500 ml · LIQUI MOLY 1 L
• Air filter cleaner : TWIN AIR 500 ml · MOTUL A1 5 L
• Airbox wash cover : TWIN AIR · TECNIUM

Frequently asked questions

Does it need oiling before it's fitted for the first time?
Yes, unless it's sold pre-oiled: a dry foam filter lets dust through.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
BETA RR 250 2026
BETA RR 250 2025
BETA RR 250 2024
BETA RR 250 2023
BETA RR 250 2022
BETA RR 250 2021
BETA RR 250 2020
BETA RR 300 2026
BETA RR 300 2025
BETA RR 300 2024
BETA RR 300 2023
BETA RR 300 2022
BETA RR 300 2021
BETA RR 300 2020
BETA RR 350 2026
BETA RR 350 2025
BETA RR 350 2024
BETA RR 350 2023
BETA RR 350 2022
BETA RR 350 2021
BETA RR 350 2020
BETA RR 390 2026
BETA RR 390 2025
BETA RR 390 2024
BETA RR 390 2023
BETA RR 390 2022
BETA RR 390 2021
BETA RR 390 2020
BETA RR 430 2026
BETA RR 430 2025
BETA RR 430 2024
BETA RR 430 2023
BETA RR 430 2022
BETA RR 430 2021
BETA RR 430 2020
BETA RR 480 2026
BETA RR 480 2025
BETA RR 480 2024
BETA RR 480 2023
BETA RR 480 2022
BETA RR 480 2021
BETA RR 480 2020