{"product_id":"bmw-f800-f650-f700-crankshaft-balance-shaft-oem-21218537774","title":"Used OEM BMW F800 Crankshaft + Rods + Balance Shaft 2006-2018 | Bottom-End Core","description":"\u003cdiv class=\"rideagain-product-container\" style=\"max-width:100%;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;line-height:1.6;color:#333;\"\u003e\n\n\u003ch2 style=\"font-size:1.5em;color:#000;border-bottom:2px solid #0066cc;padding-bottom:10px;margin-top:0;\"\u003e⚙️ BMW F-series Parallel Twin Crankshaft Assembly — Complete Bottom-End Core\u003c\/h2\u003e\n\n\u003cp\u003eGenuine \u003cstrong\u003eBMW OEM crankshaft assembly\u003c\/strong\u003e with both connecting rods, balance shaft, and bearing set — removed from a running F-series 798cc parallel twin engine. Sold as a complete bottom-end core for experienced engine rebuilders. A new OEM crankshaft from BMW retails for approximately $1,047 USD (EUR 969.84) — this listing delivers the complete rotating assembly at a fraction of new cost.\u003c\/p\u003e\n\n\u003cdiv style=\"background-color:#f0f7ff;border-left:5px solid #0066cc;padding:20px;margin:25px 0;border-radius:4px;\"\u003e\n\u003ch4 style=\"margin:0 0 10px 0;color:#0066cc;\"\u003e📦 Complete Bottom-End Package\u003c\/h4\u003e\n\u003cul style=\"margin:0;padding-left:20px;font-size:14px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft × 1:\u003c\/strong\u003e With factory timing gear intact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnecting rods × 2:\u003c\/strong\u003e Both rods with caps included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalance shaft × 1:\u003c\/strong\u003e The F800 engine's signature balance shaft that smooths out the parallel twin's secondary vibrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing set:\u003c\/strong\u003e Original bearing shells as pictured (replacement with new bearings is still strongly recommended).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:10px 0 0 0;font-size:13px;color:#555;\"\u003eSourcing these components individually from a BMW dealer would cost over $1,500 USD with shipping. Buying as a complete set saves both time and money.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color:#fff0f0;border-left:5px solid #cc0000;padding:20px;margin:25px 0;border-radius:4px;\"\u003e\n\u003ch4 style=\"margin:0 0 10px 0;color:#cc0000;\"\u003e⚠️ Honest Condition Disclosure — Read Carefully\u003c\/h4\u003e\n\u003cul style=\"margin:0;padding-left:20px;font-size:14px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSource:\u003c\/strong\u003e Removed from a running BMW F-series engine. The engine was operational at the time of disassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Condition:\u003c\/strong\u003e Main bearing journals and rod journals appear bright and clean with no visible scoring or surface defects. Splines, threads, and timing gear teeth intact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat We Have NOT Done:\u003c\/strong\u003e No precision measurements have been taken. Journal roundness, runout on V-blocks, rod weight matching, and balance shaft condition have NOT been verified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMileage:\u003c\/strong\u003e Unknown — we cannot verify service history.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis Is Not a Reconditioned Crankshaft:\u003c\/strong\u003e It is a structurally complete core that needs professional measurement and new bearings before it goes back into an engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color:#f8f9fa;border-left:5px solid #333;padding:20px;margin:25px 0;border-radius:4px;\"\u003e\n\u003ch4 style=\"margin:0 0 10px 0;color:#333;\"\u003e🔧 Who This Is For\u003c\/h4\u003e\n\u003cul style=\"margin:0;padding-left:20px;font-size:14px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMW specialist shops\u003c\/strong\u003e rebuilding F-series bottom ends with in-house measurement capability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExperienced home rebuilders\u003c\/strong\u003e with access to micrometers, dial bore gauges, V-blocks, and a precision scale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDonor engine projects\u003c\/strong\u003e where the buyer plans to send the crank out for inspection and polishing before reuse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNOT FOR:\u003c\/strong\u003e Direct bolt-in installation. Anyone expecting a measured, reconditioned, ready-to-install crank should look elsewhere.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:20px 0;font-size:14px;border:1px solid #eee;\"\u003e\n\u003ctr style=\"background-color:#f8f9fa;\"\u003e\n\u003cth style=\"padding:12px;border:1px solid #dee2e6;text-align:left;\"\u003eAttribute\u003c\/th\u003e\n\u003cth style=\"padding:12px;border:1px solid #dee2e6;text-align:left;\"\u003eSpecifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eCurrent OEM Part Number\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003e21218537774 (21 21 8 537 774)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eSupersedes\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003e11217702432\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eF650 GS (2007-2012), F700 GS (2012-2017), F800 GS (2006-2018), F800 GS Adventure (2013-2017), F800 GT (2011-2018), F800 R (2005-2018), F800 S (2004-2010), F800 ST (2004-2012)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eEngine\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003e798cc Parallel Twin (BMW K7x platform)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eCondition\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eUsed, AS-IS. Removed from running engine. Journals visually clean, splines intact. NOT measured.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eComponents Included\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eCrankshaft × 1 (with timing gear), Connecting rods × 2 with rod caps, Balance shaft × 1, Bearing set as pictured\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eNOT Included\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eCrankshaft seals, woodruff keys, rod bolts (new bolts recommended), thrust washers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"padding:10px;border:1px solid #dee2e6;\"\u003eGermany (Genuine BMW OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color:#fff0f0;border:1px solid #cc0000;padding:15px;margin:20px 0;border-radius:4px;font-size:13px;\"\u003e\n\u003cstrong\u003e🔴 Required Before Installation — Professional Measurement Mandatory:\u003c\/strong\u003e Before installing, a qualified machinist MUST verify: (1) main journal diameter and roundness against BMW service manual spec, (2) rod journal diameter and roundness, (3) crankshaft runout on V-blocks, (4) rod weight matching, (5) rod small-end and big-end bore condition, (6) balance shaft journal condition. Install with new rod bolts (torque-to-yield), new crankshaft seals, and verify all bearing clearances with Plastigauge or equivalent.\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color:#fff0f0;border:1px solid #cc0000;padding:15px;margin:20px 0;border-radius:4px;font-size:13px;\"\u003e\n\u003cstrong\u003e🔴 Final Sale \/ AS-IS Terms:\u003c\/strong\u003e This crankshaft assembly is sold as a builder's core. Surface inspection only — no measurements have been taken. No warranty on journal roundness, runout, rod straightness, weight matching, or balance shaft condition. Suitable ONLY for engine rebuilders with precision measurement equipment. NOT suitable for direct bolt-in installation. No returns accepted except for genuine not-as-described claims with photographic evidence. Buyer is responsible for VIN-based fitment verification before ordering.\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color:#f8f9fa;border:1px solid #eee;padding:15px;margin:20px 0;border-radius:4px;font-size:13px;\"\u003e\n\u003cstrong\u003e📦 Shipping Information\u003c\/strong\u003e\u003cbr\u003e\n- Heavy item — packaged with extra padding to protect journal surfaces during transit\u003cbr\u003e\n- Processing Time: 3 Business Days\u003cbr\u003e\n- USA: 7–15 Business Days (Standard Air) · 25–30 Business Days (Sea) · up to 40 Business Days if customs inspection\u003cbr\u003e\n- Europe: 7–15 Business Days (Standard Air) · 35–40 Business Days (Economy Truck\/Rail)\u003cbr\u003e\n- Other Regions: Contact us for a quote\n\u003c\/div\u003e\n\n\u003cp style=\"font-size:13px;color:#555;\"\u003e❓ \u003cstrong\u003eNot sure if this fits your bike?\u003c\/strong\u003e Message us with your VIN and we'll confirm compatibility before you order.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"BMW","offers":[{"title":"Default Title","offer_id":51823761883432,"sku":null,"price":365.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/8535\/4024\/files\/BMWF800balanceshaft_completeunitwithdrivegearandjournalsurfaces.jpg?v=1778755884","url":"https:\/\/rideagainmotors.com\/products\/bmw-f800-f650-f700-crankshaft-balance-shaft-oem-21218537774","provider":"RideAgain Motors","version":"1.0","type":"link"}