{"product_id":"spark-exhaust-full-titanium-racing-collector-without-valve-simulator-ktm-1290-1390-super-duke-r","title":"Spark Exhaust Full Titanium Racing Collector without Valve Simulator KTM 1290\/1390 Super Duke R (2020-2026) GKT8503","description":"\u003cp\u003eThe collector for a bike that has already had its exhaust valve taken out. Spark builds the same full titanium TIG-welded manifold in two versions, and this is the one without a valve simulator — cheaper by around fifty euros, and only correct if the valve motor and its wiring are gone.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFull titanium TIG-welded racing collector for the KTM 1290 and 1390 Super Duke R, 2020 to 2026.\u003c\/li\u003e\n\u003cli\u003eSilencing box included.\u003c\/li\u003e\n\u003cli\u003eNo valve simulator — for bikes with the valve motor and wiring removed.\u003c\/li\u003e\n\u003cli\u003eRemapping or an electronic valve simulator must be in place before the engine is started.\u003c\/li\u003e\n\u003cli\u003eFits with a Spark silencer or the original one.\u003c\/li\u003e\n\u003cli\u003ePerformance improved across the whole curve, per Spark.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhich of the Two You Need\u003c\/h2\u003e\u003cp\u003eThe decision is about what is still on the motorcycle, not about budget. If the exhaust valve wiring is still connected, GKT8502 is the correct part: it includes a simulator the cables attach to, so the ECU sees what it expects and no error light appears.\u003c\/p\u003e\u003cp\u003eThis number is for the other case. Spark's condition is explicit: with the wires and motor removed, either the motorcycle must be remapped or an electronic valve simulator fitted before the engine is turned on. Not after the first ride — before it starts.\u003c\/p\u003e\u003ch2\u003eThe Lean-Running Warning\u003c\/h2\u003e\u003cp\u003eSpark states that removing the catalytic converter makes the engine run very lean, raising exhaust temperature and the stress the engine is under, and that a remap is required when this manifold is installed.\u003c\/p\u003e\u003cp\u003eOn a large V-twin that is not a formality. Sustained lean running at load is how pistons and valve seats get damaged, and the cost of that dwarfs the cost of a dyno session. Treat the remap as part of the purchase price.\u003c\/p\u003e\u003ch2\u003eWhat You Are Buying\u003c\/h2\u003e\u003cp\u003eSpark developed this manifold to maximise performance and minimise weight, and it says performance is improved along the entire curve rather than only at the top. The construction is full titanium with TIG welding left visible.\u003c\/p\u003e\u003cp\u003eThe silencing box in the collector is what allows it to replace the bulky original section outright and still keep the bike's voice, in Spark's words, dark and deep without being too loud. The packing inside it should be checked every 15,000 to 20,000 kilometres, or sooner if the box discolours.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eKTM 1290 Super Duke R, 1290 Super Duke R EVO, 1390 Super Duke R and 1390 Super Duke R EVO, 2020 through 2026. The version with the valve simulator is GKT8502. The rear pipe as a spare part is SGKT8502*03. Install with the original graphite gaskets.\u003c\/p\u003e\u003ch2\u003eRoad Approval\u003c\/h2\u003e\u003cp\u003eNone. The collector removes the catalytic converter, which ends road legality on its own.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: GKT8503\u003c\/li\u003e\n\u003cli\u003eType: Racing collector with silencing box\u003c\/li\u003e\n\u003cli\u003eMaterial: Full titanium, TIG welded\u003c\/li\u003e\n\u003cli\u003eValve simulator: not included\u003c\/li\u003e\n\u003cli\u003ePrecondition: remap or electronic valve simulator before starting\u003c\/li\u003e\n\u003cli\u003eGaskets: use the original graphite gaskets\u003c\/li\u003e\n\u003cli\u003eMaintenance: check the packing every 15,000-20,000 km\u003c\/li\u003e\n\u003cli\u003eFitment: KTM 1290 \/ 1390 Super Duke R and R EVO (2020-2026)\u003c\/li\u003e\n\u003cli\u003eRoad approval: None — track use only\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":53607451164938,"sku":"GKT8503","price":7370.18,"currency_code":"RON","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/67af077c59b82_c27eac3e-afd1-4787-9960-486eecaaae47.png?v=1788200913","url":"https:\/\/inter-pace.com\/en-ro\/products\/spark-exhaust-full-titanium-racing-collector-without-valve-simulator-ktm-1290-1390-super-duke-r","provider":"Inter-Pace","version":"1.0","type":"link"}