{"product_id":"rotax-max-exhaust-muffler-assembly-senior-junior","title":"3. 273200 Rotax Max Exhaust Muffler Assembly – Senior \u0026 Junior","description":"\u003cp\u003eThe \u003cstrong\u003eRotax Max Exhaust Muffler Assembly\u003c\/strong\u003e (R.273200) is the OEM expansion chamber pipe for the Rotax 125 Senior MAX EVO and Junior MAX EVO engines — the pipe only, without the silencer assembly. Also known as the header pipe or expansion chamber, this tuned-length stainless steel muffler collects exhaust gases from the header socket and expands them in the chamber before feeding into the silencer. The tuned pipe is a critical component of the Rotax power delivery — its internal volume and length determine where the power peak falls in the RPM range.\u003c\/p\u003e\n\u003cp\u003eFits: \u003cstrong\u003eRotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/strong\u003e. The silencer assembly (R.273220) must be ordered separately if needed. For the complete system including pipe, silencer, springs, and gasket, see R.273078.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e R.273200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Expansion chamber pipe only (Pos. 3 — no silencer)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Rotax 125 Senior MAX EVO, Junior MAX EVO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCMC Karting stocks both the complete exhaust system (R.273078) and individual components so you can replace only what's damaged.\u003c\/p\u003e","brand":"KSG\/Karting Solutions Group","offers":[{"title":"Default Title","offer_id":48139650695389,"sku":"R.273200","price":334.31,"currency_code":"USD","in_stock":true}],"url":"https:\/\/cmckarting.com\/products\/rotax-max-exhaust-muffler-assembly-senior-junior","provider":"CMC Karting","version":"1.0","type":"link"}