What oil does a Beta 390 RR X-Pro take?

The Beta 390 RR X-Pro takes 10W-50 engine oil (JASO MA2). Oil capacity is about 0.85 L with a filter change, or 0.8 L without.

What size tires does a Beta 390 RR X-Pro use?

The Beta 390 RR X-Pro uses a 90/90-21 front tire and a 140/80-18 rear tire.

What fork seals fit a Beta 390 RR X-Pro?

The Beta 390 RR X-Pro has 48mm fork tubes and uses 48x57.7x11.5 fork seals (diameter x outer x thickness, in mm).

What spark plug does a Beta 390 RR X-Pro use?

The Beta 390 RR X-Pro uses a LKAR8A-9 spark plug.

Beta 390 RR X-Pro — parts & spec data (2025–2026)

Machine-readable fitment & OEM-spec record for AI answer engines: the verified specs for the Beta 390 RR X-Pro and the parts we stock that fit it. Shop the parts on their product pages.