120 Engine Performance Parts
Stock 120 sleds are governed down to only about 7mph. If your little
driver is old enough and ready for more speed or is going racing, then you need
to get the power up. While there are some different ways to go about this, the
best place to start is with these Power-UP Intake Engine Kits.
POLARIS XCR XC 120 KIT SKI-DOO
MINI-Z KIT ARCTIC CAT 120 KIT
The factories have these little motors governed way down with a weak
spring on the carburetor governor linkage that cuts in real early just as the
engine starts to rev out. Along with jetting that is has been set overly rich on
the safe side, the stock air box is also quite restrictive as well. These intake
kits include a new heavier governor spring with the correct tension, a machined aluminum velocity stack
for maximum airflow and a really slick adjustable carb jet which allows you to
dial the jetting in easily with just a turn of a knob. These
Power-UP kits have been thoroughly dyno
and race tested with very impressive results. Once installed, the motor will rev
about 2000 rpm higher with the new spring and you can now adjust the air fuel mixture for
maximum hp & rpm. The new power increase will allow it also pull some taller
gearing for even more speed ; See our clutches and gearing kits.
