{"title":"BF Dealer Cap: 5.8%","description":"Internal. Black Friday 2026 dealer cap group. Sale items at 15% off. Dealers get 5.8% off the sale price. Remove after Dec 4 2026.","products":[{"product_id":"klm-s58-stage-4-savage-engine-build-1-500-whp","title":"KLM S58 Stage 4 Engine Build (1,500 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\u003e\u003cstrong\u003eEngine core is not included. You will need to supply a healthy core or purchase a core from us.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStage 4 is where displacement changes. The bottom end moves to a 3.2L stroker as standard, not an add-on, with KLM Custom Spec pistons made to our own spec instead of a catalog part. The head keeps the 5-axis CNC porting from Stage 3 and adds our KLM Spec modification, welding and machining to reinforce it beyond what the stock casting can handle. Bearings, cams, valves and ARP hardware carry through from the earlier stages.\u003c\/p\u003e\n\u003cp\u003eIt is built to safely support tuning up to 1,500 WHP, not a promise that your engine makes 1,500 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\u003cstrong\u003e\u003cem\u003eKey Specs\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003eRated to safely support tuning up to 1,500 WHP.\u003cbr\u003eOur own shop car made 1,600 WHP on this spec, and several customer builds are running in that range.\u003cbr\u003eEvery build follows our researched and validated Stage 4 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":43439748481098,"sku":"KLM-235","price":23375.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/5431\/9690\/files\/S58_Stage_4_Display.png?v=1791836396"},{"product_id":"klm-b58-stage-4-savage-engine-build-1-500-whp","title":"KLM B58 Stage 4 SAVAGE Engine Build (1,500 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\u003e\u003cstrong\u003eEngine core is not included. You will need to supply a healthy core or purchase a core from us.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you're building a Stage 4, we already know what you're doing. This is drag car territory, or you're chasing a number most B58 owners will never see. This is our peak build, the one we throw everything at because anything less won't survive what you're about to put it through. Displacement moves to a 3.2L stroker as standard, not an add-on. Pistons are KLM Custom Spec, made to our own spec, not a catalog part with a rating stamped on the box. The head gets our KLM Spec modification, welding and machining to reinforce it beyond what the casting can handle stock, on top of the same 5-axis CNC porting from Stage 3. At 1,500 plus whp, the head has to survive just as hard as the bottom end.\u003c\/p\u003e\n\u003cp\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\u003cstrong\u003e\u003cem\u003eKey Specs\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003eRated for 1,500+ WHP. Our own shop car and several customer builds are currently running in the 1,600 whp range on this spec.\u003cbr\u003eThis is our current peak build level. No stage above this exists.\u003cbr\u003eEvery build follows our researched and validated Stage 4 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":43439748546634,"sku":"KLM-239","price":22950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/5431\/9690\/files\/79b49575-B58-Stage-4-SAVAGE.jpg?v=1774364144"},{"product_id":"klm-s58-stage-5-savage-engine-build-1-800-whp","title":"KLM S58 Stage 5 SAVAGE Engine Build (1,800 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\u003e\u003cstrong\u003eEngine core is not included. You will need to supply a healthy core or purchase a core from us.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis is the spec behind the quickest and fastest BMW in the world. Our shop car ran 7.513 at 193.74 MPH at FL2K 2026 on this exact blueprint, and it currently makes 1,836 WHP.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStage 5 is the SAVAGE build. It starts with our full Stage 4 spec, 3.2L stroker and KLM Spec head work included, then goes after the parts that give up first when the power keeps climbing. The bottom end gets a billet crankshaft and KLM billet main caps held down with ARP 625 main studs. HD sleeves come standard instead of as an add-on. Up top, the Extreme Fire-Lock head gasket, billet head dowels and ARP 625 head studs keep the head sealed, clamped and located, and our Anti Slip Cam Gear Upgrade keeps cam timing where we set it.\u003c\/p\u003e\n\u003cp\u003eIt is built to safely support tuning up to 1,800 WHP, not a promise that your engine makes 1,800 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\u003cstrong\u003e\u003cem\u003eKey Specs\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003eRated to safely support tuning up to 1,800 WHP.\u003cbr\u003eWorld record holder: quickest and fastest BMW, 7.513 at 193.74 MPH, FL2K 2026.\u003cbr\u003eOur shop car currently makes 1,836 WHP on this spec.\u003cbr\u003eThis is our current peak build level.\u003cbr\u003eEvery build follows our researched and validated Stage 5 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":67642290831434,"sku":"KLM-671","price":30175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/5431\/9690\/files\/S58_SAvage.png?v=1791837861"}],"url":"https:\/\/www.klmrace.com\/collections\/bf-dealer-cap-5-8.oembed","provider":"KLM Race","version":"1.0","type":"link"}