MWR High Performance Velocity Stacks Kawasaki ZX25RR / ZX4RR & QJMOTOR SRK421RR / SRK450RR '25/'26 | MWR-VS-430

2 piece MWR High Performance Velocity Stacks for : Kawasaki → ZX25RR / ZX4RR QJMOTOR → SRK421RR / SRK450RR To replace the original gummy trumpets we have to make a two piece velocity stacks , with a upper part ( the trumpet) and a lower part , a ring to screw all together against the airbox for 100% sealing. In our opinion to only solution to protect the engine for dirt coming into the airbox Each set includes four trumpets , four rings and a “key” to tighten the rings to secure for coming loose again. We advise to use this set for the roadbikes , this set has two high & two low velocity stacks for slightly more torque which gives a nices driveability on the roads We also have a set for racing , this set includes four low velocity stacks for less torque and more top-end power … part.nr.: MWR-VS-430Racing Our advise : make sure when you have taken out the original stacks all kit or glue will be removed so you will have a proper sealing with your new MWR Velocity stacks   No further modifications needed  

Part number: MWR-VS-430

Confirm model, year and airbox configuration before ordering.