WHAT IS IT? The Kreft PowerDial 2.0 is an easy-to-install KTM 250SX/300XC power-valve adjuster. It
replaces the stock KTM system so that adjustments can
be made in seconds.
WHAT’S IT COST? $94.95 (black anodized or KTM
CONTACT? www.kreftmoto.com or (970) 403-2715.
WHAT STANDS OUT? Here’s a list of things that stand
out with the Kreft PowerDial 2.0.
(1) Function. In stock trim, the KTM 250SX and
300XC have a preload adjuster, but it takes tools to
access and change. The Kreft PowerDial 2.0 allows the
spring preload to be changed without tools. This is a
big plus, because it allows a rider to test as many power-valve settings as he wants without tools. In fact, MXA
test riders could pull over to the side of the track and
adjust it in seconds before continuing on their merry way.
( 2) Flapper. The power valve is a flap located on the
cylinder exhaust port, where burnt gases are flushed out
of the cylinder. At low rpm, the flap is held closed to
make the exhaust port smaller to help provide torque.
As revs build, the flap gradually opens, expanding the
exhaust port for maximum power. This gives your two-stroke engine broad, usable power. The KTM power valve
is held closed by a pair of springs, and exhaust gases
force it open as they increase velocity and push harder
against the flap.
( 3) Adjustment. The power valve is held in the closed
position by a spring. You can change the rpm at which
the valve opens by adjusting the preload on the spring,
which is what the PowerDial 2.0 does. This has a
noticeable effect on the power delivery.
( 4) Counterclockwise. Which way should you turn the
PowerDial for more power? Turn the PowerDial counterclockwise for a more aggressive hit. Conversely, turn the
adjuster clockwise to smooth out the power delivery.
( 5) Direction. Once the PowerDial was installed, the
MXA test riders started by turning the adjuster in one-half
turn and then out one-half turn. The difference between
the two settings was easily recognized. In the end, every
MXA test rider made his adjustments by turning the dial
counterclockwise to get more hit. With a little fine-tuning
and a few minutes of testing, you can get the power that
best suits your tracks, riding style or weather conditions.
It’s that easy.
( 6) Owner’s manual. The KTM owner’s manual warns
riders not to touch the power-valve settings, but that is
because they don’t think that you are smart enough to do
it. The Kreft PowerDial increases your IQ by 20 points.
( 7) Fitment. The Kreft PowerDial fits all KTM 250SX
and 300XC two-strokes from 1998 through 2015. It does not
work on KTM 125 or 150 models.
WHAT’S THE SQUAWK? No serious complaints. It
installed in five minutes with the only issue being KTM’s
use of a relatively rare square Allen head bolt on the stock
adjuster. We stuck a flat-bladed screwdriver in the square
slot to back it out.
The Kreft PowerDial 2.0 power-valve adjuster
won’t give your KTM 250SX or 300XC more
power; it will just let you unleash all the
power that is in there.
KREFT KTM 250SX/300XC POWERDIAL 2.0
MXA TEAM TESTED