{"product_id":"yz450f-2026-rs-12-stainless-titanium-full-exhaust-w-aluminum-muffler-234850s720","title":"YZ450F 2026 RS-12 Stainless Titanium Full Exhaust, w\/ Aluminum Muffler - 234850S720","description":"\u003ch2\u003eYZ450F 2026 RS-12 Stainless Titanium Full Exhaust, w\/ Aluminum Muffler\u003c\/h2\u003e\n\n\u003cp\u003e\nDesigned for riders who want a true performance upgrade without giving up durability, the Yoshimura RS-12 Hybrid Full Exhaust for the 2026 Yamaha YZ450F pairs a stainless steel header with a titanium\/aluminum RS-12 muffler. Yoshimura reworked the header connection with a machined joint to make installation and removal significantly easier—especially for racers and frequent tuners—while the resonator-equipped design helps deliver strong, usable power across the rev range.\n\u003c\/p\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 234850S720\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Yoshimura\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Signature Series Exhaust System\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHybrid construction: stainless steel header for durability with a titanium\/aluminum RS-12 muffler to reduce weight versus stock\u003c\/li\u003e\n  \u003cli\u003eRedesigned header pipe connection with a machined joint for easier install and uninstall\u003c\/li\u003e\n  \u003cli\u003eVolume-specific header resonator designed to help place power where it’s needed\u003c\/li\u003e\n  \u003cli\u003eMuffler resonator integrated into the front cap to enhance power characteristics\u003c\/li\u003e\n  \u003cli\u003eEngineered to meet 109 dB sound standards with optional INS-39-K insert (per Yoshimura)\u003c\/li\u003e\n  \u003cli\u003eSound insert \/ spark arrester options noted by Yoshimura: INS-32-K (spark arrestor included), INS-39-K, SA-21-K\u003c\/li\u003e\n  \u003cli\u003eProudly engineered, developed, and built in Chino, California\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment \u0026amp; Notes\u003c\/h3\u003e\n\u003cp\u003e\nFitment: 2026 Yamaha YZ450F (as stated in the product title and source information). Sound level noted: Volume Insert. Optional inserts\/spark arrestor options are sold separately unless specified.\n\u003c\/p\u003e","brand":"Yoshimura","offers":[{"title":"Default Title","offer_id":47763522912407,"sku":"234850S720","price":1129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/4884\/6743\/files\/YZ450RS12Hybrid2048.jpg?v=1777853101","url":"https:\/\/allamericanktm.com\/products\/yz450f-2026-rs-12-stainless-titanium-full-exhaust-w-aluminum-muffler-234850s720","provider":"All American KTM","version":"1.0","type":"link"}