{"product_id":"akrapovic-evolution-line-titanium-yamaha-yz250f-2019-s-y2met15-cibnta","title":"Akrapovic Evolution Line Titanium Yamaha YZ250F \/ WR250F (2019-2020) – S-Y2MET15-CIBNTA","description":"\u003cp\u003eForty horsepower from a 250. Of the three Evolution Line systems Akrapovic lists for Yamaha's 250 four-stroke, this one for the 2019 and 2020 bikes carries the highest figures — 40.0 PS and 26.6 Nm, both above what the 2024 and later system produces on the newer engine.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTitanium complete system for the 2019 and 2020 250 Yamahas\u003c\/li\u003e\n\u003cli\u003e3.1 kg instead of 3.9 kg — 0.8 kg less, a fifth of the weight\u003c\/li\u003e\n\u003cli\u003e40.0 PS at 12,150 rpm, up from 39.5\u003c\/li\u003e\n\u003cli\u003e26.6 Nm, up from 26.2 — the best torque figure of the three\u003c\/li\u003e\n\u003cli\u003eFits YZ250F, YZ250FX and WR250F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eComparing the generations honestly\u003c\/h2\u003e\n\u003cp\u003eThe 2019–2020 engine makes more measured power with this system than the 2024–2026 engine does with its own. That is not a claim that the older bike is faster: the two were measured on different machines with different gearing and different mapping, and peak power is only one point on a curve.\u003c\/p\u003e\n\u003cp\u003eWhat it does show is that this is not a compromise system for an older bike. It is the full Evolution Line treatment for its generation.\u003c\/p\u003e\n\u003ch2\u003eTwo model years only\u003c\/h2\u003e\n\u003cp\u003eYamaha revised the 250 in 2019 and again in 2021, so this system covers a narrow window. Check the model year before ordering: a 2018 bike takes S-Y2MET14-CIBNTA and a 2021 bike takes neither of them.\u003c\/p\u003e\n\u003ch2\u003eNot for the road\u003c\/h2\u003e\n\u003cp\u003eClosed course competition only. No EC or ECE approval, and fitting it to a road-registered WR250F removes the basis for that registration.\u003c\/p\u003e\n\u003ch2\u003eWhy a two-year window exists at all\u003c\/h2\u003e\n\u003cp\u003eAkrapovic ties a part number to a chassis, not to an engine. When Yamaha moved the shock, changed the subframe or altered the airbox for 2021, the header route changed with it — and a system that fits a 2020 will not sit on a 2021 even if the motor is unchanged.\u003c\/p\u003e\n\u003cp\u003eThis is why the year matters more on a motocross bike than on a road bike: the manufacturers revise the chassis on a two- or three-year cycle, and the exhaust is one of the parts that moves.\u003c\/p\u003e\n\u003ch2\u003eTitanium on a machine that gets crashed\u003c\/h2\u003e\n\u003cp\u003eTitanium takes a dent where steel takes a crease and aluminium splits. On a motocross bike, which will be laid down repeatedly in a season, that behaviour is worth more than the weight saving to a lot of riders: the system deforms, keeps its gas path and carries on working.\u003c\/p\u003e\n\u003cp\u003eIt also anneals to a bronze and blue colour where it runs hottest. That is normal, it is not damage, and it is the reason a used titanium system looks the way it does.\u003c\/p\u003e\n\u003ch2\u003eSound at a club meeting\u003c\/h2\u003e\n\u003cp\u003eAkrapovic does not publish a decibel figure for this system, and we will not put one here. What is known is that a full titanium system with fresh packing sits in a different place on a meter from the same system after two seasons — repacking is the variable, not the pipe.\u003c\/p\u003e\n\u003cp\u003eIf a specific limit has to be met, the honest advice is to have the bike measured rather than to trust a catalogue number.\u003c\/p\u003e\n\u003ch2\u003eWhat to check on a used bike\u003c\/h2\u003e\n\u003cp\u003eBefore ordering for a 2019 or 2020 Yamaha, look at the exhaust port studs. On a machine that has had several exhausts fitted they are often stretched, and a titanium flange pulled onto tired studs is how a leak starts.\u003c\/p\u003e\n\u003ch2\u003eArticle number\u003c\/h2\u003e\n\u003cp\u003eAkrapovic lists this system as S-Y2MET15-CIBNTA.\u003c\/p\u003e","brand":"Akrapovic","offers":[{"title":"Default Title","offer_id":53631833506058,"sku":"S-Y2MET15-CIBNTA","price":1468900.0,"currency_code":"NGN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/01_05fb07bc-2056-48f2-9a27-7e497635bf07.png?v=1788618233","url":"https:\/\/inter-pace.com\/en-ng\/products\/akrapovic-evolution-line-titanium-yamaha-yz250f-2019-s-y2met15-cibnta","provider":"Inter-Pace","version":"1.0","type":"link"}