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This system features a sophisticated<br />
mechanism for the lateral support<br />
exhaust ports, providing smooth and<br />
controllable power on tap at all times.<br />
The crankshaft’s 72mm stroke remains<br />
the same, but otherwise, the component<br />
has been fully re-designed, which<br />
includes re-balancing and setting it up<br />
with a counter balance shaft against<br />
vibrations.<br />
Compared to the SX range, it has more<br />
inertia due to a heavier ignition rotor.<br />
This helps the rider remain smooth and<br />
roll on the power for maximum traction<br />
in difficult conditions. The 250 and 300<br />
two-stroke engine is equipped with a<br />
new electric starter located below the<br />
engine. Compared to previous models,<br />
the new starter system is less complex<br />
and more reliable.<br />
125/150/300 XC-W:<br />
For 2017 the 125 EXC has been replaced<br />
by the new 125 XC-W, which features<br />
all of the latest chassis and engine<br />
technology of the larger EXC models, but<br />
without any homologation features or<br />
power restrictions.<br />
The ‘XC’ stands for cross country,<br />
while the ‘W’ signifies a wide-ratio enduro<br />
gear box. Otherwise, these bikes are<br />
still largely based on the EXC models,<br />
retaining the same type of chassis<br />
hardware as well as the latest engine<br />
technology.<br />
Being very similar to the EXC models,<br />
the main difference is that they are<br />
not street-legal as they do not comply<br />
with current homologation rules from<br />
the outset – the XC-Ws are defined for<br />
closed-course competition use only.<br />
There are also XC-W 150 and 300 models<br />
available in limited numbers.<br />
KTM-designed lightweight die-cast<br />
engine cases featuring a high crankshaft<br />
and clutch shaft position, located close<br />
to the centre of gravity, which results in<br />
a tight mass centralisation for improved<br />
rideability.<br />
In addition, the engine body is<br />
extremely lightweight and compact, while<br />
still able to house an optional electric<br />
starter. The newly designed engine covers<br />
also feature an advanced, highly durable<br />
new surface structure in order to reduce<br />
the wear caused by the riders boots.<br />
Increased power and impressive<br />
amounts of torque across a wide power<br />
band have been achieved in this new<br />
design which has been packaged in an<br />
extremely compact layout that is two<br />
kilograms lighter than the previous model.<br />
450/350/250 XC-F and 300/250 XC:<br />
KTM will also have on offer the XC-F and<br />
XC cross country variants, with a mixture<br />
of off-road and motocross features,<br />
including the 450 XC-F, 350 XC-F, 250<br />
XC-F four-strokes, as well as the XC 300<br />
and XC 250 two-strokes.<br />
These are largely based off the MY17<br />
SX-F and SX range, including the new<br />
and highly anticipated WP AER 48<br />
front fork, as well as Traction Control<br />
and Launch Control. There’s also an<br />
assortment of cross country features<br />
including revised transmissions, fuel tank<br />
sizing, side-stand, wheel sizing and more.<br />
Six Days:<br />
In addition to the new cross country XC<br />
range, KTM will also offer the popular<br />
Six Days range of motorcycles, which<br />
includes various models from across the<br />
MY17 line-up.<br />
The Six Days range is based largely off<br />
the EXC range featuring the same WP<br />
XPlor 48 upside-down fork along with a<br />
predominately white colour scheme and<br />
select features aimed at extended lengths<br />
of time out on the trail.<br />
www.ktm.com<br />
34 DIRT & TRAIL MAGAZINE JULY 2016