{"product_id":"mwr-high-performance-velocity-stacks-kawasaki-zx25rr-zx4rr-qjmotor-srk421rr-srk450rr-25-26-mwr-vs-430","title":"MWR High Performance Velocity Stacks Kawasaki ZX25RR \/ ZX4RR  \u0026  QJMOTOR  SRK421RR \/ SRK450RR '25\/'26 | MWR-VS-430","description":"\u003cp\u003e2 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 \u0026amp; 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 \u0026amp;nbsp; No further modifications needed \u0026amp;nbsp;\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart number:\u003c\/strong\u003e MWR-VS-430\u003c\/p\u003e\u003cp\u003eConfirm model, year and airbox configuration before ordering.\u003c\/p\u003e","brand":"MWR","offers":[{"title":"Default Title","offer_id":67650436137236,"sku":"MWR-VS-430","price":389.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1259\/9599\/files\/MWR-MWR-VS-430.jpg?v=1791506510","url":"https:\/\/www.dennispowersport.com\/fr\/products\/mwr-high-performance-velocity-stacks-kawasaki-zx25rr-zx4rr-qjmotor-srk421rr-srk450rr-25-26-mwr-vs-430","provider":"DennisPowerSport","version":"1.0","type":"link"}