{"product_id":"echappement-maserati-granturismo-v8-4-2","title":"ROG® valved exhaust system — Maserati GranTurismo V8 4.2 (2008–2014)","description":"\u003cp\u003e\u003cstrong\u003eROG® valved exhaust system — Maserati GranTurismo V8 4.2 (2008–2014)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe naturally aspirated 4.2 V8 in the GranTurismo quotes 405 hp and 460 Nm, and only delivers them as the revs climb, exactly where the stock system smothers it most. The ROG system replaces it with a valved system you control, without touching the engine or the ECU. Valves closed, you keep the comfortable stock sound. Open, you hear the naturally aspirated V8.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePerformances\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"font-size:13px;color:#555;font-style:italic;margin:12px 0;\"\u003eAt ROG we go after the best, which is why we always recommend a remap at an approved centre after fitting. Our systems fit perfectly with or without, but it is with a full remap that your engine will express all of its potential.\u003c\/p\u003e\u003cp class=\"rog-perf-version\"\u003e\u003cstrong\u003e405 hp\u003c\/strong\u003e\u003c\/p\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;margin:12px 0 4px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-family:-apple-system,BlinkMacSystemFont,'Helvetica Neue',Arial,sans-serif;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px 8px;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;text-align:center;white-space:nowrap;border:none;border-bottom:2px solid #ddd;background:#fff;color:#fff;width:26%;\"\u003e\u003c\/th\u003e\n\u003cth style=\"padding:10px 8px;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;text-align:center;white-space:nowrap;border:none;border-bottom:2px solid #ddd;background:#f0f0f0;color:#888;width:25%;\"\u003eOrigine\u003c\/th\u003e\n\u003cth style=\"padding:10px 8px;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;text-align:center;white-space:nowrap;border:none;border-bottom:2px solid #ddd;background:#1a1a1a;color:#fff;width:25%;\"\u003eROG system alone\u003c\/th\u003e\n\u003cth style=\"padding:10px 8px;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;text-align:center;white-space:nowrap;border:none;border-bottom:2px solid #ddd;background:#CC0000;color:#fff;width:25%;\"\u003eStage 2 + Reprog\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;font-weight:600;color:#111;text-align:left;padding-left:12px;border-bottom:1px solid #ebebeb;\"\u003ePuissance\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;border-bottom:1px solid #ebebeb;color:#999;\"\u003e405 hp\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;border-bottom:1px solid #ebebeb;color:#111;font-weight:600;\"\u003e+11,3 hp\u003cbr\u003e\u003cspan class=\"gain\"\u003egap between peaks\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;border-bottom:1px solid #ebebeb;color:#CC0000;font-weight:700;font-size:14px;\"\u003e454 hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;font-weight:600;color:#111;text-align:left;padding-left:12px;\"\u003eCouple\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;color:#999;\"\u003e460 Nm\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;color:#111;font-weight:600;\"\u003e+9,9 Nm\u003cbr\u003e\u003cspan class=\"gain\"\u003egap between peaks\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;color:#CC0000;font-weight:700;font-size:14px;\"\u003e520 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cdiv class=\"rog-perf-mobile\"\u003e\n\u003cdiv class=\"rog-perf-card\"\u003e\n\u003cdiv class=\"rog-perf-card-header dark\"\u003eROG system alone\u003c\/div\u003e\n\u003cdiv class=\"rog-perf-row\"\u003e\n\u003cspan class=\"rog-perf-label\"\u003ePuissance\u003c\/span\u003e\u003cspan class=\"rog-perf-val\"\u003e\u003cspan class=\"orig\"\u003eStock: 405 hp\u003c\/span\u003e+11,3 hp\u003cbr\u003e\u003cspan class=\"gain\"\u003egap between peaks\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rog-perf-row\"\u003e\n\u003cspan class=\"rog-perf-label\"\u003eCouple\u003c\/span\u003e\u003cspan class=\"rog-perf-val\"\u003e\u003cspan class=\"orig\"\u003eStock: 460 Nm\u003c\/span\u003e+9,9 Nm\u003cbr\u003e\u003cspan class=\"gain\"\u003egap between peaks\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rog-perf-card\"\u003e\n\u003cdiv class=\"rog-perf-card-header red\"\u003eStage 2 + Reprog\u003c\/div\u003e\n\u003cdiv class=\"rog-perf-row\"\u003e\n\u003cspan class=\"rog-perf-label\"\u003ePuissance\u003c\/span\u003e\u003cspan class=\"rog-perf-val\"\u003e\u003cspan class=\"orig\"\u003eStock: 405 hp\u003c\/span\u003e454 hp\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rog-perf-row\"\u003e\n\u003cspan class=\"rog-perf-label\"\u003eCouple\u003c\/span\u003e\u003cspan class=\"rog-perf-val\"\u003e\u003cspan class=\"orig\"\u003eStock: 460 Nm\u003c\/span\u003e520 Nm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cp class=\"rog-perf-version\"\u003e\u003cstrong\u003e383,9 hp\u003c\/strong\u003e\u003c\/p\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;margin:12px 0 4px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-family:-apple-system,BlinkMacSystemFont,'Helvetica Neue',Arial,sans-serif;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"padding:10px 8px;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;text-align:center;white-space:nowrap;border:none;border-bottom:2px solid #ddd;background:#fff;color:#fff;width:26%;\"\u003e\u003c\/th\u003e\n\u003cth style=\"padding:10px 8px;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;text-align:center;white-space:nowrap;border:none;border-bottom:2px solid #ddd;background:#f0f0f0;color:#888;width:37%;\"\u003eOrigine\u003c\/th\u003e\n\u003cth style=\"padding:10px 8px;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;text-align:center;white-space:nowrap;border:none;border-bottom:2px solid #ddd;background:#1a1a1a;color:#fff;width:37%;\"\u003eROG system alone\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;font-weight:600;color:#111;text-align:left;padding-left:12px;border-bottom:1px solid #ebebeb;\"\u003ePuissance\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;border-bottom:1px solid #ebebeb;color:#999;\"\u003e383,9 hp\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;border-bottom:1px solid #ebebeb;color:#111;font-weight:600;\"\u003e395,2 hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fafafa;\"\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;font-weight:600;color:#111;text-align:left;padding-left:12px;\"\u003eCouple\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;color:#999;\"\u003e442,1 Nm\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;font-size:13px;text-align:center;color:#111;font-weight:600;\"\u003e452 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cdiv class=\"rog-perf-mobile\"\u003e\u003cdiv class=\"rog-perf-card\"\u003e\n\u003cdiv class=\"rog-perf-card-header dark\"\u003eROG system alone\u003c\/div\u003e\n\u003cdiv class=\"rog-perf-row\"\u003e\n\u003cspan class=\"rog-perf-label\"\u003ePuissance\u003c\/span\u003e\u003cspan class=\"rog-perf-val\"\u003e\u003cspan class=\"orig\"\u003eStock: 383,9 hp\u003c\/span\u003e395,2 hp\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rog-perf-row\"\u003e\n\u003cspan class=\"rog-perf-label\"\u003eCouple\u003c\/span\u003e\u003cspan class=\"rog-perf-val\"\u003e\u003cspan class=\"orig\"\u003eStock: 442,1 Nm\u003c\/span\u003e452 Nm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cp style=\"font-size:12px;color:#aaa;font-style:italic;margin-top:6px;\"\u003eGains from the ROG system alone without a remap. Stage 2 with a full remap.\u003c\/p\u003e\u003cp style=\"margin-top:22px;\"\u003e\u003cstrong\u003eThe Manifold option: what it replaces\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBetween the engine and our system, one stock part remains, the one that holds the catalytic converter. On this naturally aspirated V8 its design matters: lengths and geometry affect cylinder filling at high revs. With a remap the gain is real but modest, in the order of 3 to 8 %. Badly designed, it loses you torque down low. The 200-cell sport catalytic converter retains exhaust after-treatment; the 100-cell version and the catalyst-free variant do not. No component type approval exists for these parts: check the regulations in your country before fitting.\u003c\/p\u003e\u003cdiv data-rog-guide=\"v2\" style=\"margin-top:28px;padding-top:20px;border-top:1px solid rgba(0,0,0,.11);\"\u003e\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;\"\u003e\n\u003ca class=\"rogx-guide__btn rogx-guide__btn--fort\" href=\"\/en-be\/blogs\/guides\/guide-maserati-granturismo-v8-4-2\" style=\"display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:980px;text-decoration:none;font-size:15px;font-weight:500;font-family:-apple-system,BlinkMacSystemFont,'SF Pro Text','Helvetica Neue',Helvetica,Arial,sans-serif;line-height:1.2;white-space:nowrap;background:#1D1D1F;color:#fff\"\u003e\u003cspan\u003eRead the full guide\u003c\/span\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"15\" height=\"15\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\" style=\"flex:none\"\u003e\u003cpath d=\"M5 12h13M12 5l7 7-7 7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/a\u003e\u003ca class=\"rogx-guide__btn\" href=\"\/en-be\/collections\/echappement-maserati\" style=\"display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:980px;text-decoration:none;font-size:15px;font-weight:500;font-family:-apple-system,BlinkMacSystemFont,'SF Pro Text','Helvetica Neue',Helvetica,Arial,sans-serif;line-height:1.2;white-space:nowrap;background:#F5F5F7;color:#1D1D1F\"\u003e\u003cspan\u003eAll Maserati systems\u003c\/span\u003e\u003c\/a\u003e\u003ca class=\"rogx-guide__btn\" href=\"\/en-be\/pages\/echappements-par-marque\" style=\"display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:980px;text-decoration:none;font-size:15px;font-weight:500;font-family:-apple-system,BlinkMacSystemFont,'SF Pro Text','Helvetica Neue',Helvetica,Arial,sans-serif;line-height:1.2;white-space:nowrap;background:#F5F5F7;color:#1D1D1F\"\u003e\u003cspan\u003eAll 22 brands\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c!-- rog-maillage --\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eOther versions and closely related engines\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-be\/products\/echappement-maserati-granturismo-v8-4-7\"\u003eGranTurismo V8 4.7\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-be\/products\/echappement-maserati-granturismo-v6\"\u003eGranturismo V6\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSee all the \u003ca href=\"\/en-be\/collections\/echappement-maserati\"\u003eMaserati valved exhaust systems\u003c\/a\u003e.\u003c\/p\u003e\u003c!-- \/rog-maillage --\u003e","brand":"ROG Motorsport","offers":[{"title":"Stainless steel \/ No manifold","offer_id":60851687096654,"sku":"ROG-409-MASERATI-GRANTURISMO-V8-4-2-INOX-SANS","price":2490.0,"currency_code":"EUR","in_stock":true},{"title":"Stainless steel \/ Catalyst-free manifold","offer_id":60851687129422,"sku":"ROG-409-MASERATI-GRANTURISMO-V8-4-2-INOX-DECAT","price":3390.0,"currency_code":"EUR","in_stock":true},{"title":"Stainless steel \/ 100-cell sport manifold","offer_id":60851687162190,"sku":"ROG-409-MASERATI-GRANTURISMO-V8-4-2-INOX-SP100","price":3810.0,"currency_code":"EUR","in_stock":true},{"title":"Stainless steel \/ 200-cell sport manifold","offer_id":60851687194958,"sku":"ROG-409-MASERATI-GRANTURISMO-V8-4-2-INOX-SP200","price":3810.0,"currency_code":"EUR","in_stock":true},{"title":"Titanium \/ No manifold","offer_id":60851687227726,"sku":"ROG-409-MASERATI-GRANTURISMO-V8-4-2-TI-SANS","price":2990.0,"currency_code":"EUR","in_stock":true},{"title":"Titanium \/ Catalyst-free manifold","offer_id":60851687260494,"sku":"ROG-409-MASERATI-GRANTURISMO-V8-4-2-TI-DECAT","price":3890.0,"currency_code":"EUR","in_stock":true},{"title":"Titanium \/ 100-cell sport manifold","offer_id":60851687293262,"sku":"ROG-409-MASERATI-GRANTURISMO-V8-4-2-TI-SP100","price":4310.0,"currency_code":"EUR","in_stock":true},{"title":"Titanium \/ 200-cell sport manifold","offer_id":60851687326030,"sku":"ROG-409-MASERATI-GRANTURISMO-V8-4-2-TI-SP200","price":4310.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/5079\/3806\/files\/maserati-granturismo-v8-4-2-ligne-echappement.png?v=1789655743","url":"https:\/\/rogmotorsport.com\/en-be\/products\/exhaust-maserati-granturismo-v8-4-2","provider":"ROG","version":"1.0","type":"link"}