{"product_id":"spark-exhaust-force-evo-400-mm-silencer-group-kawasaki-zx-4rr","title":"Spark Exhaust Force Evo 400 mm Silencer Group D.60 Titanium Kawasaki ZX-4RR (2023-2026) GKA8855ST","description":"\u003cp\u003eThe long Force Evo case: 400 millimetres instead of 350, and the silencer Spark uses in the configuration it developed with Kawasaki Germany to stay within 98 decibels.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eForce Evo silencer group for the Kawasaki ZX-4RR.\u003c\/li\u003e\n\u003cli\u003eTitanium case, 400 mm, carbon end cap.\u003c\/li\u003e\n\u003cli\u003eThe case from Spark's 98 dB IDM system.\u003c\/li\u003e\n\u003cli\u003e60 mm inlet.\u003c\/li\u003e\n\u003cli\u003e761 euro, the dearest of the three silencer groups for this bike.\u003c\/li\u003e\n\u003cli\u003eRacing part, no homologation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFifty Millimetres of Quiet\u003c\/h2\u003e\u003cp\u003eLength is the cheapest way to take decibels out of an exhaust without strangling it. The extra fifty millimetres give the packing more volume and the gas a longer path through it, which is why the 400 mm case is the one in Spark's quietest ZX-4RR configuration and the 350 sits at 105 dB.\u003c\/p\u003e\u003cp\u003eIt is also why this group costs ninety-five euro more than the 350: there is simply more silencer.\u003c\/p\u003e\u003ch2\u003eThe 98 dB System Uses Two Insert\u003c\/h2\u003e\u003cp\u003eWorth being precise about what belongs to what. Spark's complete 98 dB system, GKA8855T, is supplied with two dedicated dB killers. The article you are looking at here is the silencer group.\u003c\/p\u003e\u003cp\u003eIf the 98 dB figure is the reason you are ordering, tell us — we will confirm with Spark whether the inserts come with the group before anything ships, rather than let you assume it. Without them the case is a long Force Evo, not a 98 dB solution.\u003c\/p\u003e\u003ch2\u003eRoom Behind the Shock\u003c\/h2\u003e\u003cp\u003eFour hundred millimetres has to go somewhere. On a standard ZX-4RR tail there is space, but a race seat unit, a tail tidy or an aftermarket hugger can turn the extra length into a clearance problem.\u003c\/p\u003e\u003cp\u003eMeasure before ordering rather than after. The 350 mm group GKA8852ST is the shorter alternative at the same interface.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eKawasaki ZX-4RR of 2023 through 2026. This case belongs to the 98 dB system GKA8855T; ordered there, it arrives with the collector, the hangers and the two inserts. The shorter Force Evo is GKA8852ST at 666 euro, and the Konix Evo group is GKA8850ST.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eNone. Racing part. The 98 dB brief describes a paddock rule, not a road approval.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: GKA8855ST\u003c\/li\u003e\n\u003cli\u003eType: Silencer group\u003c\/li\u003e\n\u003cli\u003eDesign: Force Evo\u003c\/li\u003e\n\u003cli\u003eMaterial: titanium, carbon end cap\u003c\/li\u003e\n\u003cli\u003eLength: 400 mm\u003c\/li\u003e\n\u003cli\u003eInlet: 60 mm\u003c\/li\u003e\n\u003cli\u003eBelongs to: Spark's 98 dB configuration GKA8855T\u003c\/li\u003e\n\u003cli\u003eRoad approval: none, track use\u003c\/li\u003e\n\u003cli\u003eFitment: Kawasaki ZX-4RR (2023-2026)\u003c\/li\u003e\n\u003cli\u003eManufacturer: Spark Exhaust Technology, Mantova, Italy\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53610740744458,"sku":"GKA8855ST","price":40200.0,"currency_code":"MKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/gka8855st-daempfer_65c12988-8408-4c5b-b30d-1ffda91770c4.png?v=1788257766","url":"https:\/\/inter-pace.com\/en-mk\/products\/spark-exhaust-force-evo-400-mm-silencer-group-kawasaki-zx-4rr","provider":"Inter-Pace","version":"1.0","type":"link"}