PROX Oil Filter for BETA RR 350, RR 520 2010-2026

On BETA RR 350, RR 520 from 2010 to 2026, the PROX 54.64631-50 oil filter fits in place of the original part. The oil filter traps the metal particles and deposits circulating in the oil. On a four-stroke motocrosser, the oil lubricates the valve train and the crankshaft at very high rpm: a new filter at every oil change protects these parts.

Specifications

• Brand: PROX
• Manufacturer part number: 54.64631-50

When to replace it?

• Engine oil change due.
• Metal particles or sludge visible in the filter.

At every oil change, or every other oil change, depending on your bike's service manual.

Fitting tips

1. Drain the engine oil while it's warm.
2. Clean the filter housing and check the cover O-ring.
3. Fit the filter the right way round, oil the seals and tighten the cover to the manufacturer's torque.
4. Fill up with fresh engine oil and check the level after running the engine.

Why PROX?

ProX Racing Parts has been supplying engine and clutch parts to motocross riders since 1975, from its headquarters near Amsterdam. According to its catalogue, most of its parts are made in Japan, by manufacturers that also produce parts for the Japanese motorcycle makers.

Spare parts and items to plan

• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063
• Drain plug : see the selection

Frequently asked questions

How many filters does my bike have?
Some engines have two: check in your manual which one this part number replaces.

Compatibility

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

Fits:
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 350 2019
BETA RR 350 2018
BETA RR 350 2017
BETA RR 350 2016
BETA RR 350 2015
BETA RR 350 2014
BETA RR 350 2013
BETA RR 350 2012
BETA RR 350 2011
BETA RR 350 2010
BETA RR 520 2026
BETA RR 520 2025
BETA RR 520 2024
BETA RR 520 2023
BETA RR 520 2022
BETA RR 520 2021
BETA RR 520 2020
BETA RR 520 2019
BETA RR 520 2018
BETA RR 520 2017
BETA RR 520 2016
BETA RR 520 2015
BETA RR 520 2014
BETA RR 520 2013
BETA RR 520 2012
BETA RR 520 2011
BETA RR 520 2010