{"title":"340i Gen 1 B58 Builds","description":"","products":[{"product_id":"klm-gen-1-b58-stage-2-engine-build-1-200-whp","title":"KLM Gen 1 B58 Stage 2 Engine Build (1,200 WHP)","description":"\u003cp\u003e\u003cstrong\u003eYou will receive an email after placing this order to confirm freight and final shipping cost.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eStage 2 is where the real upgrades start. If you're already looking at cams and valves for a Stage 1, you're better off here, since Stage 2 isn't a-la-carte parts stacked on a lower tier, it's a complete step up in what the bottom end and head can survive. Rods move to BC I-Beam, stronger under load and built to hold more power. Pistons step up to a higher rated CP-Carrillo spec, and the head gets actual GSC intake and exhaust valves and Kelford or GSC cams instead of a stock valvetrain. We also machine the block in-house to accept oversized ARP studs at this stage, standard hardware doesn't cut it once you're pushing this far past factory.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eIt is built to safely support tuning up to 1,200 WHP, not a promise that your engine makes 1,200 WHP out of the box. Send us your engine or buy a core from us and we build the whole thing start to finish. Either way it comes back ready to run once it's through break-in.\u003c\/p\u003e","brand":"KLM Race","offers":[{"title":"Default Title","offer_id":43439748153418,"sku":"KLM-241","price":16299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/5431\/9690\/files\/0b6bbf73-B58-Engine-Stage-2-2.jpg?v=1774364140"},{"product_id":"klm-gen-1-b58-stage-1-engine-build-1-000-whp","title":"KLM Gen 1 B58 Stage 1 Engine Build (1,000 WHP)","description":"\u003cp\u003e\u003cstrong\u003eYou will receive an email after placing this order to confirm freight and final shipping cost.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis is our baseline for anyone pushing a B58 past what the factory internals were ever built to survive. Stage 1 covers the rotating assembly, head hardware, and sealing, everything that has to hold when boost and timing start climbing. It is built to safely support tuning up to 1,000 WHP, not a promise that your engine makes 1,000 WHP out of the box. That number is a ceiling, and we build with margin above it on purpose.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eSend us your engine or buy a core from us and we build the whole thing start to finish. Either way it comes back ready to run once it's through break-in.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cem\u003eKey Specs\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003eRated to safely support tuning up to 1,000 WHP.\u003cbr\u003eEvery build follows our researched and validated Stage 1 spec. Individual engines are not dyno tested.\u003cbr\u003eBreak-in period required. Instructions included with every build.\u003cbr\u003eSend in your own engine or purchase a core from KLM for a complete build.\u003cbr\u003eTurnaround is typically 3 to 4 weeks, occasionally longer depending on parts availability and build queue.\u003cbr\u003e\u003c\/p\u003e","brand":"KLM Race","offers":[{"title":"Default Title","offer_id":43439748251722,"sku":"KLM-240","price":11999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/5431\/9690\/files\/e71ee797-B58-Engine-Stage-1.jpg?v=1774364140"},{"product_id":"klm-gen-1-b58-stage-3-engine-build-1-300-whp","title":"KLM Gen 1 B58 Stage 3 Engine Build (1,300 WHP)","description":"\u003cp\u003e\u003cstrong\u003eYou will receive an email after placing this order to confirm freight and final shipping cost.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eStage 3 keeps the factory 3.0L stroke and shifts the focus to the head. We do 5-axis CNC porting in-house along with a full valve job, smoother ports, less turbulence, better seal, more air moving through the head at the same displacement. Rods, pistons, bearings, and cams carry over from Stage 2, and oversized ARP studs with the in-house machining that fits them carry through as well.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eIt is built to safely support tuning up to 1,300 WHP, not a promise that your engine makes 1,300 WHP out of the box. Send us your engine or buy a core from us and we build the whole thing start to finish. Either way it comes back ready to run once it's through break-in.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cem\u003eKey Specs\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003eRated to safely support tuning up to 1,300 WHP.\u003cbr\u003eEvery build follows our researched and validated Stage 3 spec. Individual engines are not dyno tested.\u003cbr\u003eBreak-in period required. Instructions included with every build.\u003cbr\u003eSend in your own engine or purchase a core from KLM for a complete build.\u003cbr\u003eTurnaround is typically 3 to 4 weeks, occasionally longer depending on parts availability and build queue.\u003c\/p\u003e","brand":"KLM Race","offers":[{"title":"Default Title","offer_id":43439748612170,"sku":"KLM-242","price":19999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/5431\/9690\/files\/c663a522-B58-Stage-3.jpg?v=1774364144"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/5431\/9690\/collections\/BMW-F30.jpg?v=1778764720","url":"https:\/\/www.klmrace.com\/collections\/340i-gen-1-b58.oembed","provider":"KLM Race","version":"1.0","type":"link"}