{"product_id":"sp-concepts-big-bore-4-5-2-into-1-exhaust-harley-touring-m8-2017-2026","title":"SP Concepts Big Bore 4.5 2-Into-1 Exhaust — Harley Touring M8 2017–2026","description":"\u003cp\u003eSP Concepts' Big Bore 4.5 2-into-1 for M8 baggers — stepped headers and a reversion chamber feeding a 4.5-inch high-flow muffler, built for everything from stock motors to big-inch builds. Pro Flo chambers are available on this system as an option.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFITMENT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFits every 2017–2026 Harley-Davidson Touring model, including all CVO models and the 2024 models with VVT and updated engine covers (fitment as published by SP Concepts).\u003c\/p\u003e\n\u003cp\u003eNot sure it fits your bike? Email info@norcalbaggersupply.com — email is the fastest way to reach us — and we'll confirm before you order. You can also call 916-626-9030 (Mon–Fri, 9 AM–5 PM PT).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCALIFORNIA NOTICE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRace use only — not legal for use in California. SP Concepts labels this system a “Competition Use Only \/ Race Ready” product. It does not conform to California Air Resources Board (CARB) standards, carries no CARB Executive Order, and does not contain a catalytic converter. It is not legal for use on pollution-controlled vehicles operated on public streets or highways in California, and we cannot ship it to a California address — orders shipping to California will be cancelled and refunded. Available for shipment to the other 49 states.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: SP Concepts (Stainless Powered Concepts) — Lake Elsinore, California, USA\u003c\/li\u003e\n\u003cli\u003eSP Concepts part number family: SPC-2-003 (each finish carries its own part number, shown on its variant)\u003c\/li\u003e\n\u003cli\u003eSystem type: 2-into-1 full exhaust system\u003c\/li\u003e\n\u003cli\u003e.065 stainless steel headers, stepped from 1¾″ to 1⅞″ to 2″ at the collector\u003c\/li\u003e\n\u003cli\u003eHand TIG welded; machined stainless steel header collars\u003c\/li\u003e\n\u003cli\u003e18mm O2 bungs with 12mm adapters — allows stock or autotune sensors\u003c\/li\u003e\n\u003cli\u003eComplete hardware kit included — everything needed to mount it up\u003c\/li\u003e\n\u003cli\u003e4.5″ high-flow performance rolled cone muffler with a stepped baffle from 2¼″ to 2½″ — increases bottom to mid range torque and horsepower\u003c\/li\u003e\n\u003cli\u003eFinish options: Stainless, Black, Polished, Black ONYX, Platinum\u003c\/li\u003e\n\u003cli\u003eReversion chamber after the collector (per SP Concepts)\u003c\/li\u003e\n\u003cli\u003eOptional Pro Flo chambers (see the Add Pro Flo Headers option)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eINSTALLATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInstall using the included complete hardware kit. SP Concepts' official install video for their 2-into-1 exhaust systems — the video SP links from its own FAQ install guide — is embedded below.\u003c\/p\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/uWq_LgYYrEo\" title=\"SPC 2-1 Exhaust Install Instructions — SP Concepts\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003cp\u003e\u003cstrong\u003eQUESTIONS RIDERS ASK\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color:#d4af37\"\u003eWhat do the Pro Flo chambers do?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color:#ffffff\"\u003ePer SP Concepts, the Pro Flo chambers are designed to aid in the reversion and expansion process and help produce better torque and horsepower numbers than the standard system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color:#d4af37\"\u003eWhich motors can this system handle?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color:#ffffff\"\u003ePer SP Concepts, it increases bottom to mid range torque and horsepower on all motors, and tuned properly it can accommodate 88″ to 143″ engines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color:#d4af37\"\u003eCan you ship this to California?\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan style=\"color:#ffffff\"\u003eNo. This is a race-use-only part that does not conform to CARB standards, so we do not ship it to California — see the California Notice above. It is available to the other 49 states.\u003c\/span\u003e\u003c\/p\u003e","brand":"SP Concepts","offers":[{"title":"Stainless \/ No","offer_id":67922216419430,"sku":"SPC-2-003","price":1199.0,"currency_code":"USD","in_stock":true},{"title":"Stainless \/ Pro Flo Headers Yes","offer_id":67922216452198,"sku":"SPC-2-003-PF","price":1499.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No","offer_id":67922216484966,"sku":"SPC-2-003-B","price":1399.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Pro Flo Headers Yes","offer_id":67922216517734,"sku":"SPC-2-003-B-PF","price":1699.0,"currency_code":"USD","in_stock":true},{"title":"Polished \/ No","offer_id":67922216550502,"sku":"SPC-2-003-P","price":1399.0,"currency_code":"USD","in_stock":true},{"title":"Polished \/ Pro Flo Headers Yes","offer_id":67922216583270,"sku":"SPC-2-003-P-PF","price":1699.0,"currency_code":"USD","in_stock":true},{"title":"Black ONYX \/ No","offer_id":67922216616038,"sku":"SPC-2-003-B-ONYX","price":1599.0,"currency_code":"USD","in_stock":true},{"title":"Platinum \/ No","offer_id":67922216648806,"sku":"SPC-2-003-PL","price":1599.0,"currency_code":"USD","in_stock":true},{"title":"Black ONYX \/ Pro Flo Headers Yes","offer_id":67922216681574,"sku":"SPC-2-003-B-PF-ONYX","price":1899.0,"currency_code":"USD","in_stock":true},{"title":"Platinum \/ Pro Flo Headers Yes","offer_id":67922216714342,"sku":"SPC-2-003-PL-PF","price":1899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/6133\/0022\/files\/0F45C230-1043-4DB5-8315-40E32F91C969_b78b4146-160d-46a3-b4d1-ec6278367acb.jpg?v=1793831928","url":"https:\/\/norcalbaggersupply.com\/products\/sp-concepts-big-bore-4-5-2-into-1-exhaust-harley-touring-m8-2017-2026","provider":"NorCal Bagger Supply","version":"1.0","type":"link"}