Graves Motorsports Velocity Stacks Kawasaki Ninja 400 / Z400
This Graves Velocity Stack Kit offers a plug and play solution for a 6% power increase without any tuning! This kit includes 2 injection molded rubber stacks developed by Graves Motorsports’ in-house race team.
Features:
- 6% power increase without tuning
- Kit includes 2 injection molded rubber stacks
- Made in the USA








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