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Intended for motorcycles with stock or mildly tuned engines using a well-designed aftermarket pipe and individual air filters
In most cases power increases of 10-15% can be achieved; however, driveability may be compromised particularly with short-stroke, high-rpm motors
On some modern engine and air box designs, individual filters and proper jetting offer no performance improvement yet compromise driveability, in such cases stage 3 kits are not available