progressively bores out the
stock KTM 250SX
from 36mm to
39mm, installs the
system, cuts the
slide, and installs
a Quad Flow Wing.
These mods work
on the 2017 KTM
and Husky two-stroke Mikuni carbs.
VERDICT: By increasing air velocity and adding a secondary fuel source, Dick Wilk was able to drop four main
jet sizes on the 38mm Mikuni. We got snappier throttle
response and a big boost in top-end power when the atomized fuel joined the party. The gain in top-end power and
over-rev was immediately noticeable.
DIGITS: $585.00— www.dicksracing.com or
USED IT, ABUSED IT, MISUSED IT & LOVED IT
TM DESIGNWORKS FACTORY
EDITION SX CHAIN GUIDE
It’s no secret that if you start with a five-star design and
keep refining it, you will eventually achieve perfection.
The Factory Edition SX guide has been narrowed, an oil
additive reduces friction and the chain wear blocks are
longer and sleeker. Plus, you don’t have to break the chain
to install it.
VERDICT: The MXA wrecking crew has eaten through
so many Kawasaki and Suzuki chain guides that we don’t
wait for them to wear out anymore. We replace them with
a TM Designworks unit while the bike and chain are still
new. It saves us the trouble and avoids costly repairs as
steel meets steel.
DIGITS: $79.00 (CRF, YZ, RM-Z, KX-F), $89.95 (KTM/
Husky)— www.tmdesignworks.com or (541) 772-4161.
SCALVINI 2017 KTM/HUSKY CONE
Scalvini pipes are unique in that they are handmade
cone pipes that hark back to the glory days of factory
two-strokes. They are expertly welded in Italy by a team
of experienced artisans.
VERDICT: The Scalvini gave up some on the bottom
but had a smooth transition into the mid and a strong
pull all the way to the top. Over-rev was much improved
over the stock pipe. This helped lengthen the shift points
from gear to gear. It was not an overly fast pipe, but it
gave the 250SX and TC250 power where they needed it.
Making a bike easier to ride is often more important than
DIGITS: $329.00 (cone pipe), $175.00 (aluminum silencer with carbon tip), $247.00 (full carbon fiber silencer)—
www.scalvinipipes.com or (760) 949-0941.
EKS BRAND EKS-S GOGGLES
The EKS Brand EKS-S goggle has all the great features
of the lower-line goggles but with the added benefits of
a nose guard and Fit Force outrigger strap system. It has
five tabs to secure tear-offs, four-layer face foam and three
squiggly lines of silicone to keep the strap from slipping.
VERDICT: MXA test riders like EKS Brand goggles
because they remind them of the original, no-nonsense
Scott 83 goggles of the glory days. They don’t have a complicated hodgepodge of features that you never use. The
EKS-S goggle is a working man’s goggle that offers value
for the money.
DIGITS: $64.99— www.eksbrand.com or
(818) 706-1700. ❏