{"product_id":"spark-exhaust-titanium-4-2-1-collector-kawasaki-zx-4rr","title":"Spark Exhaust Titanium 4-2-1 Racing Collector Kawasaki ZX-4RR (2023-2026) GKA8851","description":"\u003cp\u003eThe titanium manifold on its own, sized to take any of Spark's silencer groups for the ZX-4RR. The arithmetic is worth stating: this collector is 1,536 euro, the Konix Evo silencer group 666, and the assembled titanium system 2,214. Buying the halves costs what buying the whole costs.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTitanium 4-2-1 racing collector for the Kawasaki ZX-4RR.\u003c\/li\u003e\n\u003cli\u003eConnections machined from solid by CNC.\u003c\/li\u003e\n\u003cli\u003eSized compensators rather than standard parts.\u003c\/li\u003e\n\u003cli\u003eTakes any Spark silencer group for this motorcycle.\u003c\/li\u003e\n\u003cli\u003eSupplied without silencer.\u003c\/li\u003e\n\u003cli\u003eRacing part, no homologation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFour Into Two Into One\u003c\/h2\u003e\u003cp\u003eOn a screaming 400 four-cylinder the collector is where the exhaust is actually designed. Four primaries pair into two, the two merge into one, and the diameters and taper of each stage decide where in the rev range the pressure waves help rather than fight.\u003c\/p\u003e\u003cp\u003eSpark sized this one for the ZX-4RR specifically rather than scaling a 600 layout down, which on an engine that lives above 12,000 rpm is not a detail you can borrow.\u003c\/p\u003e\u003ch2\u003eMachined Joints and Sized Compensators\u003c\/h2\u003e\u003cp\u003eTwo details Spark carries over from its Superbike and Moto2 work. The connections are cut from solid on a CNC instead of being folded and welded, so a joint that gets split between sessions seals the same way each time. The compensators — the flexible sections that absorb thermal movement — are sized for this system rather than taken off a shelf.\u003c\/p\u003e\u003cp\u003eNeither is visible once the fairing is on. Both are the reason a race exhaust survives a season of heat cycles without the couplings going slack.\u003c\/p\u003e\u003ch2\u003eWhat You Still Need\u003c\/h2\u003e\u003cp\u003eA silencer group. Spark builds three for this motorcycle at the same interface: the Konix Evo GKA8850ST, the 350 mm Force Evo GKA8852ST and the 400 mm Force Evo GKA8855ST that belongs to the 98 dB configuration.\u003c\/p\u003e\u003cp\u003eAssembled systems, if you would rather order once: GKA8856T with the Konix Evo on this titanium collector, and GKA8850T, GKA8852T, GKA8855T and GKA8851T on the stainless one.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eKawasaki ZX-4RR, 2023 to 2026. The stainless version of the same layout is fitted to Spark's other systems for this bike.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eNone. Racing part, closed course only.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: GKA8851\u003c\/li\u003e\n\u003cli\u003eType: Header, 4-2-1 collector\u003c\/li\u003e\n\u003cli\u003eMaterial: titanium\u003c\/li\u003e\n\u003cli\u003eConnections: CNC machined from solid\u003c\/li\u003e\n\u003cli\u003eSupplied: collector only\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":53610736517386,"sku":"GKA8851","price":5790000.0,"currency_code":"UGX","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/GKA8851.png?v=1788441595","url":"https:\/\/inter-pace.com\/en-ug\/products\/spark-exhaust-titanium-4-2-1-collector-kawasaki-zx-4rr","provider":"Inter-Pace","version":"1.0","type":"link"}