{"product_id":"emi-thunder-exhaust-system-bb-chevy-with-standard-aluminum-risers-colored-finish","title":"EMI Thunder Exhaust System - BB Chevy with Standard Aluminum Risers","description":"\u003cdiv\u003e\n\u003cdiv\u003e\u003cb\u003e\u003cspan\u003eA great economical performance upgrade for stock engines. These systems are equipped with our standard cast aluminum short risers. They are a direct replacement for many stock Mercruiser manifolds in Bravo and Alpha applications using exhaust selector systems or Merc \"S\" pipes if you have existing exhaust outlets, please check our dimensions to determine the correct fit before ordering! We are not responsible for exhaust systems that do not match up to existing holes in your boat's transom. With this system using short aluminum risers, we \u003c\/span\u003eDO NOT\u003cspan\u003e recommended them for use with engines with aftermarket camshafts. Brackets to keep all of the stock components in their existing locations (\u003c\/span\u003e\u003ci\u003eshift quadrant, ignition module and oil filter bracke\u003c\/i\u003e\u003cspan\u003et) are available and sold separately.\u003c\/span\u003e\u003c\/b\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003e\u003c\/b\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eSystem Includes:\u003cbr\u003e\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e\u003c\/b\u003e\u003cspan\u003e1pr. EMI Exhaust Manifolds\u003cbr\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e1pr. Aluminum Risers\u003cbr\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eBolts, exhaust and riser gaskets, and fittings.\u003cbr\u003e\u003c\/span\u003e\u003ci\u003e* Accessory brackets are sold separately\u003c\/i\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cb\u003e\u003cspan class=\"PageText_L660n\"\u003eFeatures\u003c\/span\u003e\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eLarge individual runners for ultra-efficient exhaust flow and velocity\u003c\/b\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement for many stock Mercruiser manifolds in Bravo \u0026amp; Alpha apps\u003cbr\u003e\u003ci\u003e\u003cspan\u003e*See our systems dimensions in the Technical Specs below to confirm fitment.\u003c\/span\u003e\u003c\/i\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMinimum 10% increase in torque and horsepower\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e316 stainless steel investment cast, one-piece riser flange\/inner pipe\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eStandard 4” exhaust hose connections\u003c\/li\u003e\n\u003cli\u003eIntegral water-cooled exhaust divider\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e70lbs lighter than stock cast iron exhaust systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eFive year limited warranty\u003c\/li\u003e\n\u003cli\u003eConstructed from the highest strength 356 aluminum\u003c\/li\u003e\n\u003cli\u003eThree step coating process for ultimate corrosion resistance\u003c\/li\u003e\n\u003cli\u003eHeat treated to a T-6 condition\u003c\/li\u003e\n\u003cli\u003eMilitary specification Hard-Coat Anodize undercoat\u003c\/li\u003e\n\u003cli\u003eUltra-durable Gloss Black Fusioncoat Finish\u003c\/li\u003e\n\u003cli\u003eCustom Blue or Red Fusioncoat Finishes\u003cspan\u003e available\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\nEMI Thunder manifolds are hard coat anodized to a military spec throughout to prevent corrosion.\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eStandard with Black, Blue, and Red Fusioncoat finishes.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cb\u003e\u003ci\u003e*Not for use with engines equipped with high performance camshafts!\u003c\/i\u003e\u003c\/b\u003e\u003c\/div\u003e","brand":"Eddie Marine","offers":[{"title":"Bright Polished Finish","offer_id":46763900502204,"sku":"EMI-510P","price":2921.95,"currency_code":"USD","in_stock":true},{"title":"Bright Blue Fusioncoat Finish","offer_id":46763900371132,"sku":"EMI-510B","price":2938.95,"currency_code":"USD","in_stock":true},{"title":"Gloss Black Fusioncoat Finish","offer_id":46763900403900,"sku":"EMI-510BK","price":2938.95,"currency_code":"USD","in_stock":true},{"title":"Bright Red Fusioncoat Finish","offer_id":46763900567740,"sku":"EMI-510R","price":2938.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/8676\/8828\/files\/EMI-510-3T.png?v=1778709696","url":"https:\/\/eddiemarine.com\/products\/emi-thunder-exhaust-system-bb-chevy-with-standard-aluminum-risers-colored-finish","provider":"Eddie Marine","version":"1.0","type":"link"}