PRODUCT: Moto Tassinari’s AIR4ORCE
tunable intake system for the Kawasaki KX450
replaces the existing stock airboot with a cus-tom-designed airboot that offers more volume
and two adjustable velocity stacks.
POSITIVE: Both velocity stacks improved
throttle response right off bottom. The longer
velocity stack provided noticeable increases
in bottom to midrange power. The shorter
velocity stack increased midrange pull and
allowed the engine to rev longer on top without sacrificing bottom-end torque.
NEGATIVE: Installing the AIR4ORCE on the
KX450 in particular can be a challenge.
Changing the tunable velocity stacks requires
removing the entire subframe.
BOTTOM LINE: Many factory motocross
and off-road racing teams use Moto
Tassinari’s AIR4ORCE tunable intake system
on their bikes for one reason: it works. We
strongly recommend you have this system
installed by a professional. The AIR4FORCE is
a factory-level modification available to the
privateer at a reasonable price. ;
MOTO TASSINARI AIR4ORCE KX450