Graves Motorsports Kawasaki Ninja 400 / Z400 / Ninja 500 / Z500 / KLE 500Velocity Stack Kit.Developed through our in house race programs. These stacks create a 6% power increase for $129.95 no tuning required!

NINJA 400 : 1st & 2nd Charts show a completely stock bike compared to a bike equipped with the Graves’ velocity stacks, WORKS2 full exhaust, DNA air filter and Graves FTEcu flash
NINJA 400 :3rd Dyno chart displays a completely stock bike with and without the velocity stacks – no tuning
NINJA 500 :Dyno displays Ninja 500 Stock vs. Graves Works 3 Full System, DNA Air Filter and Graves Flash Map vs. Graves Works 3 Full System, DNA Air Filter, Graves Stacks, Air Box Mod andGraves FTEcu flash
KLE 500 : Dyno displays KLE 500 Stock vs. Graves Cat-Back Exhaust, Velocity Stacks,DNA Air Filter and Graves FTEcu flash

FITMENT: 2018-2023 Kawasaki Ninja 400 / 2018-2023 Z400 / 2024 + Ninja 500 / 2024 + Z500 + KLE 500 2026 +
NOTE:See video below to view complete installation instructions on this kit.Stock bikes the larger velocity stack installs on the ride side of the motorcycles. racebikes equipped with the Graves’ velocity stacks, WORKS2 full exhaust, DNA air filter and Graves FTEcu flash:you will install the taller stack on the left side of airbox.