new diaphragm spring clutch similar
to that of the 250 and 450SX models.
The new design is lighter, more compact and designed for added durability. The 2018 85SX model also features
a new exhaust system tailor-made
to all the engine updates with a
50mm-shorter silencer contributing to
the mass-centralization theme.
As with the engine, not much of
the chassis remains unchanged for
2018. The chromium molybdenum
steel frame is lighter and features a
new geometry aimed at improving flex
characteristics for better handling.
Torsional rigidity is increased by 7
percent, while longitudinal stiffness is
reduced by 25 percent.
The 85SX is now fitted with new
No Dirt foot-pegs that prevent the
buildup of dirt collected in deep ruts
and muddy terrain. The frame is finished off in an orange powdercoating
normally reserved for Factory Edition
models and orange plastic frame protectors. Mass centralization continues
with the aluminum subframe, which is
lighter and has a shorter profile.
Up front, the WP AER 43 consists
of a split fork design using a capsuled air spring in the left leg and an
oil-damping system in the right leg.
The new components offer a significant improvement in suspension performance with a reduction in weight
and an increase in wheel travel from
270mm to 280mm total. Adjustments
can be made to the single air-pres-sure valve and supplied via the fork
air pump and clickers for compression
In the rear, a version of the new WP
XPlor PDS shock absorber is fitted
to the KTM 85SX. It is fully adjust-
able for preload, compression and
rebound. KTM has scaled down the
styling from its larger SX models to fit
the proportions of an 85cc rider. The
contact points and feeling remain the
same, allowing the younger riders to
experience the same comfort as larger
riders. The broader, flatter seat and
one-piece air filter box cover are also
designed for an unrestricted feel.