Dano's Performance has developed this Supersport package for the 2018-19 Kawasaki Ninja 400 model bikes. We have achieved horsepower gains of 8-9 HP (59-60) with this all top end package. Since all that is required to install this package is removing the cylinder head, this is very cost effective way to achieve big performance gains.See our website for the details at: http://www.danosperformance.com/Ninja 400 Superbike Package.htm