{"product_id":"mercedes-benz-amg-m178-forged-internals","title":"Mercedes-Benz AMG M178 Forged Internals| Rods \u0026 Pistons | YPG Motorsport","description":"\u003cp\u003eMercedes-AMG M178 Forged Internals — Rods \u0026amp; Pistons Kit\u003c\/p\u003e\n\u003cp\u003eThe Mercedes-AMG M178 4.0L twin-turbo V8 is the performance-focused sibling of the M177, found exclusively in the AMG GT family. It shares the same 83mm bore and 92mm stroke as the M177 but uses a dry-sump oiling system for improved oil starvation protection under track conditions. Our M178 forged internals kit is specifically designed for the dry-sump architecture and pairs directly with the YPG Stage 4 M178 turbo system — the same combination that has demonstrated 1,200HP+ on pump fuel in our own builds.\u003c\/p\u003e\n\u003cp\u003eWhat's Included:\u003cbr\u003eForged 4340 steel connecting rods — dry-sump compatible\u003cbr\u003eForged pistons — 83mm bore, optimised for forced induction\u003cbr\u003eARP rod bolts\u003cbr\u003ePolished crankshaft\u003cbr\u003eCompatible with YPG Stage 4 M178 turbo kit\u003cbr\u003eSuitable for pump fuel, E30, E85, and methanol builds\u003cbr\u003eBalanced and matched set — within ±1.5g\u003c\/p\u003e\n\u003cp\u003eCompatible Vehicles:\u003cbr\u003eAMG GT (2015–2023) — Coupe and Roadster\u003cbr\u003eAMG GT S (2015–2023)\u003cbr\u003eAMG GT C (2016–2023) — Coupe and Roadster\u003cbr\u003eAMG GT R (2017–2023) and GT R Pro (2019–2023)\u003cbr\u003eAMG GT Black Series (2020–2023)\u003cbr\u003eAMG GT 63 S 4-Door E Performance (2018–2023)\u003c\/p\u003e\n\u003cp\u003eDry Sump Note:\u003cbr\u003eThe M178's dry-sump oiling system is a significant advantage for track use — it eliminates oil starvation during high-G cornering and braking that affects wet-sump engines. Our forged internals are designed and tested specifically for the M178's dry-sump architecture. All clearances and specifications are matched to the M178 block, not the M177. Do not interchange these kits.\u003cbr\u003e\u003c\/p\u003e\u003ch3\u003eRelated Products\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercedes-amg-gt-c190-lowering-springs\"\u003eMercedes-AMG GT C190 Lowering Springs — $649.00\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/carbon-air-intake-system-o102mm-mercedes-benz-amg-gt\"\u003eCarbon Air Intake System Ø102mm Mercedes Benz AMG GT — $2490.00\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/stage-4-turbo-upgrade-m178\"\u003eMercedes-Benz AMG GT\/GTC\/GTS\/GTR\/GTRPro Stage 4 Turbo Upg... — $9999.99\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercedes-amg-gt-s-c-valved-exhaust-with-mid-pipes-incl-cat-delete-oem-cat-adapters-ces3-set1-2\"\u003eMercedes AMG GT\/S\/C\/R – Valved Exhaust with Mid-Pipes (in... — $5599.99\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Shop\",\"item\":\"https:\/\/ypgmotorsport.com\/collections\/all\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Mercedes-Benz AMG M178 Forged Internals| Rods \u0026 Pistons\",\"item\":\"https:\/\/ypgmotorsport.com\/products\/mercedes-benz-amg-m178-forged-internals\"}]}\u003c\/script\u003e\n\u003cdiv class=\"product-faq\" style=\"margin-top:24px;border-top:1px solid #e0e0e0;padding-top:20px;\"\u003e\n\u003ch3 style=\"font-size:18px;font-weight:bold;margin-bottom:16px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails style=\"margin-bottom:12px;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;padding:8px 0;\"\u003eHow much does the Mercedes-Benz AMG M178 Forged Internals| Rods \u0026amp; Pi cost?\u003c\/summary\u003e\u003cp style=\"padding:8px 0 8px 16px;color:#555;\"\u003eThe Mercedes-Benz AMG M178 Forged Internals| Rods \u0026amp; Pi is $6599.99 through YPG Motorsport with free worldwide shipping.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:12px;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;padding:8px 0;\"\u003eAre these drop-in replacements?\u003c\/summary\u003e\u003cp style=\"padding:8px 0 8px 16px;color:#555;\"\u003eYes. Direct drop-in replacement for factory connecting rods and pistons. Designed for builds that exceed factory power levels.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:12px;\"\u003e\u003csummary style=\"font-weight:600;cursor:pointer;padding:8px 0;\"\u003eDo you ship forged internals worldwide?\u003c\/summary\u003e\u003cp style=\"padding:8px 0 8px 16px;color:#555;\"\u003eYes. Free worldwide shipping on all YPG Motorsport forged internals.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How much does the Mercedes-Benz AMG M178 Forged Internals| Rods \u0026 Pi cost?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The Mercedes-Benz AMG M178 Forged Internals| Rods \u0026 Pi is $6599.99 through YPG Motorsport with free worldwide shipping.\"}},{\"@type\":\"Question\",\"name\":\"Are these drop-in replacements?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Direct drop-in replacement for factory connecting rods and pistons. Designed for builds that exceed factory power levels.\"}},{\"@type\":\"Question\",\"name\":\"Do you ship forged internals worldwide?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Free worldwide shipping on all YPG Motorsport forged internals.\"}}]}\u003c\/script\u003e","brand":"YPG Motorsport","offers":[{"title":"Default Title","offer_id":53543170834779,"sku":null,"price":6599.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0805\/8611\/3371\/files\/07-12-18-5649_dbb02e15-5756-479d-b980-5a5f306761bd.png?v=1784376120","url":"https:\/\/reinhardtautohaus.com\/products\/mercedes-benz-amg-m178-forged-internals","provider":"Reinhardt Autohaus","version":"1.0","type":"link"}