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Each Pro-Lite Piston comes complete with a piston ring, wrist pin and
a set of circlips. The YZ250 kit costs
$79.38, while the YZ125 package is
$62.53. Both kits cost considerably less
than OEM parts, and with the pe rformance ga ins and greater durability to
boot, the-Pro-Lite Piston kits ar e d efinite ly worth their wei ght in gold . (Pun
intended.)
Fo r m or e info rm a tio n co n tact
Wisec o Pi ston, Inc ., 7201 Industria l
Park Blvd ., Mentor, OH, 44060-5396,
800/321-1364.
- Donn Maeda
_
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Miscellaneous
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at $2.95
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at 2 for $1.00
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~---------------------------~~
WISECO PRO -LITE PISTON
In th e pas t, the name "Wiseco" has
brought to mind big-bore cheater kit s
a nd ov er sized pistons for bi kes that
had been seized see m in g ly beyond
repair. That's all changed, though, as
the aftermarket piston company has
gotten serious about their line of
forged pistons and made an aggressive
bid for their share of the motocross
and off-road markets.
A quick look down the starting line
at any Na tional motocross will reveal
more than just a few Wiseco stickers
a do rn in g the bikes of the pros.
Amongst those using Wiseco's Pro-Lite
pistons in 1994 are Team Yamaha's Jeff
Em ig and Mike Craig, Noleen's Larry
Broo ks, Kyle Lewis and Larry Ward,
privateer Jeff Maliasevich, and the
en tire NCY and DGY teams. And it 's
been a well-known fact that the aforementioned Yamaha riders have snared
th e majority of the holeshots in '94.
Just a coincidence? We had to know.
Since Wiseco has been having the ir
most-documented success with their
Yamaha YZ line of pistons, we dec ided
to try a pair out in out YZ125 and 250
test bikes. Wiseco does, however, manufacture a complete line of p istons for
Honda, Kawasaki and Suzuki motocrossers as well, and all boast the same
features as the Yamaha units.
So what makes a Pro-Lite piston
different? The biggest obvious difference is that the Pro-Lite p iston is
forged, not cast like a s to ck piece.
Wiseco claims that a forged piston is
stronger and wears better than a cast
piston, and is also more resistant to
skirt br eakage.
Th e YZ250 piston kit is a full 30
grams ligh ter than a stocker, and as a
res ult , Wiseco claims that it will rev
quicker and provide smoother power.
Th e YZ1 25 p isf on kit is 13.4 gram s
lighter, and is claimed to provide similar results. The Pro-Lites feature a different cam gri nd sha pe, resulting in the
piston's lower weigh t.
On the tr ac k, w e were pleasantl y
s u rprised b y th e performance g ai ns
that the Pro-Lites yielded. Thou gh the
slow-revving feeli ng of th e s tock
YZ250 engine wasn' t eliminate d, we
did notice that the powerplant d i d
seem to rev a bit quicker. One of our
dislikes about the stock 250 was it's
reluctance to overrev, and the Pro'-Lite
piston seemed to he lp in that area as
well. Instead of fla ttening o u t in the
higher RPM range, the Wiseco-kitted
250 continued to p ull w ell into the
upper en d of th e powerband.
Power gai ns on the YZ125 weren't
as appare nt, si nce the s tock YZ 125
already revs qu ickly and p roduces an
impressive amo unt of powe r. We d id
notice t ha t t hr o t tl e r e sp ons e wa s
im p roved, however, probably d ue to
the P ro -Lit es lo w er w eight. Th e
Wiseco-e q ui p p ed motor d id seem to
rev a tad further than stock.
XTREME X-LITE BELT
Ask most rid ers, and th ey'll p robably
tell yo u that a kid ney belt is a kid ney
belt. Once in a while, however, you'll
come across a savvy rider who has
tried more than a few belts in search of
the perfect fit, and they'll most likel y
recommend one of the supporters that
incorporates the orthoped ic be lt
design.
Unlike the standard elastic-with-ahard-plastic-or-foam-back-piece belts
that have become the norm, a fewcorn-
panies manufacture kidney belts that
inco rporate dual elastic st raps on each
side that focus the s u p p o r t on the
rider's back, not his stomach.
One of th ese such belts is the ne w
X-Lite Belt from Xtrem e.
Unlike many of the other orthopedic design belts , the X·Lite Belt is not
overly-tall in the back section, and th e
front of the belt is low in profile as
well. The belt's straps are made of a
so ft fabric that Xtreme calls Soft
Tempo, and they are thin enough to be
comfortable, yet thick enough to p rovide support . Two heavy-duty elas tic
straps· on e on each side - stretch forward a n d secu re to the So ft Tem po
straps via ho ok and loop fasteners. The
elastic straps can be adjusted to p rovid e a littl e - or a lot - of support.
Th e ba ck panel is equally as com ·
fortable. Un like many belts that have a
stiff plastic piece that jabs into the top
of yo ur butt, th e X-Lite Belt has a soft,
pliabl e back panel tha t conforms to the
natural curve of your lower back. Lots
of vents keep you r back cool.
.
All in all, the X-Lit e Belt is one of
th e mo st co m fo rtable, ye t fu nction a l
k id n e y b elts we h a ve ever wo r n .
Thanks to the d ouble-st rap d esign, it
is possible to localize the belt' s p ressure and su ppo rt on yo ur bac k where
it belongs, instea d of on your stomach.
My brother and I have an ongoing
joke about the "Flange Tes t" that all
new kidney belts mu st undergo. After
a long moto, most belts ·give-in to
"be lly pr essu re" and are folded down
as we pull off the track. A belt that
passes the "Flange Test" will flip back
up when we dismount , while a failing
belt will stay folde d d own. So how did
t he X- Li te Bel t fare in the " Fla n ge
Test?" It d idn't eve n fold d own in the
firs t place!
The X-Lite Belt cos ts $46.95. Fo r
m ore inform a t ion co n tac t Xtre me,
Dept. CN, 2590 Jason Court, Oceansid e, CA 92056, 619/630-6370.
-Donn Mae da
