P106 RIDE REVIEW I 2025 BETA RR X-PRO 300 TWO-STROKE & 390 FOUR-STROKE
well at ultra-low rpm; the 300, however,
does it a bit better. The 390 may stall
before the 300, but stalling in general is
not a concern on either bike.
The 390's traction control option is
effective when the trail is ultra-dry and
you're riding over loose rocks. You can
feel the difference, even though it's not
drastic. But it is a nice touch.
The 390 can find traction when the 300 might struggle.
(Below left) Dual
engine maps are
offered on both
bikes; the 390 also
has traction control.
(Below right)
Rescue straps
are included—just
in case.
Both run well out of the crate, espe-
cially the 300. It's no wonder Beta isn't
rushing to
switch to fuel injection with
its two-strokes; why bother when it
works so effectively? The fuel-injected
390 also has excellent fueling.
Like the 390, you can pour straight
gas right into the 300's translucent fuel
tank, which is wonderful.
