{"product_id":"dorch-engineering-b58-gen-1-lift-kit-exhaust-camshaft-40","title":"Dorch Engineering B58 Gen 1 Lift Kit - Exhaust Camshaft +40%","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eAfter years of setting records with their S55 and N55 \"Lift Kit\" camshaft products, Dorch Engineering brings the same proven approach to the Gen 1 B58, genuinely a game-changing product for this community. The upgrade consists of a billet OEM-spec exhaust camshaft with Dorch's custom high-lift fuel lobe. Because the camshaft profile itself remains OEM spec, there's no need for upgraded valve springs or any special tuning to run it.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eInstalled alongside your Dorch HPFP, this delivers \u003cstrong\u003e40% more fuelling capacity\u003c\/strong\u003e beyond the existing HPFP flow alone. The numbers speak for themselves: paired with Dorch's DS25-250 HPFP, flow potential jumps from 750whp to \u003cstrong\u003e1000whp on gasoline\u003c\/strong\u003e, and from 550whp to \u003cstrong\u003e770whp on E85\u003c\/strong\u003e, at the same 250 bar operating pressure. Genuine billet-machined construction, not a compromised regrind of the stock camshaft.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Gen 1 B58 engines exist in two distinct camshaft versions depending on build date, designated \"Gen1\" and \"Gen1.5,\" split around an August 2017 cutoff. Confirm which version your specific engine uses before ordering, fitting the wrong one won't work.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eOnce you approach the upper limits of a Stage 2 HPFP with this cam installed\u003c\/strong\u003e, the B58 fuel system becomes limited by the injectors. To see the true benefit of this upgrade, higher-flowing injectors are also required.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eWhy Choose This Exhaust Camshaft Lift Kit\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eGenuine billet OEM-spec camshaft with custom high-lift fuel lobe, not a compromised regrind\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e+40% more fuelling capacity when paired with a Dorch HPFP\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFlow potential up to 1000whp on gasoline, 770whp on E85 (with DS25-250 HPFP)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOEM-spec profile means no upgraded valve springs or special tuning required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eProven design philosophy carried over from Dorch's record-setting S55 and N55 Lift Kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F20\/F21 M140i (B58 Gen 1)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F22\/F23 M240i (B58 Gen 1)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F30\/F31 340i (B58 Gen 1)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F32\/F33\/F36 440i (B58 Gen 1)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW G30\/G31 (B58 Gen 1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eCritical fitment note:\u003c\/strong\u003e confirm whether your engine is the original \"Gen1\" or the later \"Gen1.5\" camshaft version (split around an 08\/2017 build date) before ordering, these are not interchangeable.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eRequires:\u003c\/strong\u003e an existing Dorch Engineering HPFP kit, this camshaft is not a standalone fueling solution.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eRecommended pairing:\u003c\/strong\u003e higher-flowing injectors are needed to see the true benefit once approaching the upper limits of a Stage 2 HPFP with this cam installed.\u003c\/p\u003e","brand":"Dorch Engineering","offers":[{"title":"Gen 1","offer_id":54462611620173,"sku":"DEN-ENG-B58-008","price":1323.8,"currency_code":"EUR","in_stock":false},{"title":"Gen 1.5","offer_id":54462611652941,"sku":"DEN-ENG-B58-008","price":1323.8,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/dorch-engineering-b58-gen-1-lift-kit-exhaust-camshaft-40.webp?v=1785947503","url":"https:\/\/i6tuning.com\/products\/dorch-engineering-b58-gen-1-lift-kit-exhaust-camshaft-40","provider":"i6 Tuning","version":"1.0","type":"link"}