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

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 racebikes , this set has four low velocity stacks for more top-end power We also have a set for roadbikes, this set includes two low & two high velocity stacks for slightly more torque which gives the bike more driveability … part.nr.: MWR-VS-430 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-430Racing

Confirm model, year and airbox configuration before ordering.