MWR Street High Performance Velocity Stacks Kawasaki Ninja ZX-4RR (2023-2025)

To replace the original trumpets, MWR has developed two-piece velocity stacks with an upper section (the trumpet) and a lower section, plus a ring to bolt everything against the airbox for a 100% seal. Each set contains four stacks, four rings and a "key" to tighten the rings in case they come loose.

We recommend this set for street bikes — it contains two high and two low velocity stacks for slightly more torque, giving smoother rideability on the road.

Note: When removing the original stacks, make sure all sealant or glue is removed so you achieve a proper seal with your new MWR Velocity Stacks.

Fits the following models:

• Kawasaki Ninja ZX-4RR (2023-2025)