This kit is the result of more than 4 months of combined testing.
It has been designed for use with any exhaust system, stock or
aftermarket, including the stock muffler.
An air filter cover modification was necessary to increase power
above 6000 rpm, and the needles with their 4 angles are designed
for use with the air filter cover modification.
The air filter cover modification diagrams and instructions are
included with the kit.
Driveability is greatly improved, the common dead spot off idle
is completely eliminated, and throttle response is immediate.
One of the common misconceptions with this model is that a larger
pilot jet is needed
We have found that this is not the case at all
needle design takes care of it.
Handlebar vibration is dramatically reduced (feels smooth as
glass), and closed to part throttle transitions are also dramatically
After installation of this kit, your ZR7 will accelerate hard
until the rev-limiter shuts it down and will have awesome driveability.