RaceDNA Kawasaki Ninja 400 Velocity Stacks
Made From High-Grade CNC Machined Billet Alloy, The RaceDNA Velocity Stack Are Designed For Smoother Acceleration, Increased Torque, And Highet HP Delivery. The RaceDNA Billet Velocity Stacks Take Place Of the 2 OEM Factory Stacks. If You’re After Some Serious HP Gain You Definitely Want To Fit A Set Of These.
"We Recommend That After Installation A Retune Is Performed To Map The Bike To The Modification That Have Been Done" Damage Can Be Done If A Retune Has Not Been Carried Out.