Graves Motorsports Kawasaki Ninja 400 / Z400 Velocity Stack Kit. Developed through our in house race programs. These stacks create a 6% power increase for $129.95 no tuning required!
- 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
- 3rd Dyno chart displays a completely stock bike with and without the velocity stacks - no tuning
FITMENT: 2018-2023 Kawasaki Ninja 400 / 2018-2023 Z400