{"title":"mainshafts for Harley-Davidson, Indian and Metric motorcycles","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eEvery explosion, every push, every turn eventually meets at a single point and transforms into rotational motion – this is the crankshaft. The crankshaft is the mechanical heart of the engine: it converts the up-and-down motion of the pistons into rotational motion, which is then transmitted by the drivetrain to the rear wheel. This is one of the most heavily stressed components in the engine – every combustion stroke exerts immense force on it, so the balance, strength, and precise fit of the crankshaft fundamentally determine the engine's smoothness, reliability, and lifespan. In our selection, you will find crankshafts for Harley-Davidson, Indian, and metric custom motorcycles, ranging from OEM-spec replacement parts to larger-stroke, performance-enhancing stroker crankshafts that can increase both displacement and torque. Complete, pre-balanced units are available, as well as related components – bearings, seals, and fitting elements – making a complete engine overhaul straightforward. Quality crankshafts are manufactured with precision, from high-strength forged or cast steel, with careful balancing to ensure they rotate smoothly, without vibration, and reliably, even at high RPMs and under significant load. Whether replacing the crankshaft is part of an engine overhaul or the foundation of a serious stroker performance upgrade project, you will find the part that perfectly fits your engine and needs with us.\u003c\/p\u003e","products":[{"product_id":"crankshaft-position-jelado-21-24-softail-21-24-flt-touring-21-24-trikes","title":"crankshaft position sensor - 21-24 Softail\/ 21-24 FLT\/Touring\/ 21-24 Trikes","description":"\u003cp\u003eSENSOR, CRANKSHAFT POSITION\u003c\/p\u003e\u003cp\u003eOEM style replacement sensor. OEM replacement reference 32700144. Note: See 938865 for O-ring.\u003c\/p\u003e\u003cp\u003eFits: Harley-Davidson 21-24 Softail; 21-24 FLT\/Touring; 21-24 Trikes\u003c\/p\u003e","brand":"MCS","offers":[{"title":"Default Title","offer_id":57685190836556,"sku":"917618","price":64.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_902e5f4e353e49abaaa1d36dc250d4ee_mv2.jpg?v=1780377958"},{"product_id":"mainshaft-anya-90-23-big-twin","title":"mainshaft nut - 90-23 Big Twin","description":"\u003cp\u003eNUT, MAINSHAFT\u003c\/p\u003e\u003cp\u003eReplacement clutch hub nut (on mainshaft).\u003c\/p\u003e\u003cp\u003eFits: \u0026gt; 90-23 all B.T.\u003c\/p\u003e","brand":"MCS","offers":[{"title":"Default Title","offer_id":57694736646476,"sku":"949690","price":12.25,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_45a9171373084a4b84af8c7e9093bd87_mv2.jpg?v=1780442290"},{"product_id":"o-gyuru-fotengely-tugorgos-csapagy-1984-1986-big-twin-4-sebesseg","title":"o-gyűrű főtengely tűgörgős csapágy - 1984-1986 Big Twin 4 sebesség","description":"\u003cp\u003eOEM replacement reference 11166. 1984-1986 4-sp B.T.\u003c\/p\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57702698516812,"sku":"979941","price":0.84,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_b8bc03e2-943e-4434-bb87-cf4ebe525502.jpg?v=1780513650"},{"product_id":"szimering-primer-fedel-fotengely-egyajku-1970-1984-fl","title":"oil seal primary cover mainshaft - single lip - 70-84 FL","description":"Rubber OD. 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OEM replacement reference 37741-82 1982-1986 4-speed B.T.\u003c\/p\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57702698647884,"sku":"979917","price":40.16,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_556632ab-b096-4be0-a926-591ad8548ae5.jpg?v=1780513677"},{"product_id":"szimering-lanckerek-tengely-valto-fotengely-1952-1984-k","title":"szimering lánckerék tengely\/váltó főtengely - 1952-1984 K","description":"OEM replacement reference 35151-52A. Transmission mainshaft: 52-E84 K, XL (NU). 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OEM replacement reference 12050. 1984-1994 5-sp B.T.; 1991-1994 XL\u003c\/p\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57702741606732,"sku":"979918","price":8.57,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_c175bdec-b66e-4a54-a838-d4eca12bc9d9.jpg?v=1780513795"},{"product_id":"szimering-fotengely-kuplungagy-egyajku-1980-1981-fl","title":"oil seal mainshaft\/clutch hub - single lip - 80-81 FL\/","description":"\u003cp\u003eRubber OD. OEM replacement reference 3771941-1967. 1980-1981 FL; L1979-1981 FX : Transmission mainshaft. 67-70 XL : Clutch hub.\u003c\/p\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57702742098252,"sku":"979921","price":5.83,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_f150b998-85b5-4b68-84b9-8d166bda6961.jpg?v=1780513833"},{"product_id":"szimering-valto-fotengely-egyajku-1980-1984-5-sebesseg-flt","title":"oil seal transmission mainshaft - single lip - 80-E84 5-sp FLT","description":"Metal OD. 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Note: Does not include 35231-36 cork washer, which is available as 980965 (Athena), 561382 (Cometic) or 923136 (James) when required. 41-79 FL.; 71-E79 FX (NU)","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57702783713612,"sku":"979924","price":5.83,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_146fd8e5-1898-4fc5-894e-f1851ef719b2.jpg?v=1780513879"},{"product_id":"o-gyuru-valto-fotengely-jobb-veg-l1984-fxr","title":"O-ring transmission mainshaft - Right end - L1984 FXR","description":"OEM replacement reference 11162. L1984 FXR, FXRS; 84-86 5-sp B.T. (NU)","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57702833160524,"sku":"979943","price":0.84,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_87c73be1-af0e-478b-8318-53bcd9f0fe6f.jpg?v=1780514047"},{"product_id":"quad-szimering-valto-fotengely-csapagy-l1984-2006-5-sebesseg-big-twin","title":"quad szimering váltó főtengely csapágy - L1984-2006 5 sebesség Big Twin\/","description":"\u003cp\u003eSmall quad-ring oil seal. OEM replacement reference 11165. L1984-2006 5-sp B.T.; 1991-2005 XL\u003c\/p\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57702891749708,"sku":"979986","price":1.13,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_ddabae96-b1e4-47f9-a1ab-f9900b2b918f.jpg?v=1780514312"},{"product_id":"4-sebesseg-valto-fotengely-tomiteskeszlet-1982-1986-big-twin-4-sebesseg","title":"4 sebesség váltó főtengely tömítéskészlet - 1982-1986 Big Twin 4 sebesség","description":"Tartalmazza a főtengely- és kuplungagy-anyatömítéseket. Teljesen, ahogy a képen látható. 82-86 4-sebességes B.T. 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K-KH Models\u003c\/p\u003e","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57703047364940,"sku":"980506","price":14.33,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_a87b19dd-c616-4503-95f5-ab57a99270db.jpg?v=1780514931"},{"product_id":"5-sebesseg-valto-fotengely-tomiteskeszlet-1980-1984-5-sebesseg-fxr","title":"5 sebesség váltó főtengely tömítéskészlet - 1980-1984 5 sebesség FXR","description":"Includes mainshaft oil seals and clutch hub nut oil seals. Complete as shown. 80-E84 5-speed FXR, FLT (NU)","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57703059325260,"sku":"980505","price":21.72,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_b37d3ef9-bae4-4cb4-b726-db7ea08fc7ca.jpg?v=1780514996"},{"product_id":"valto-fotengely-tomiteskeszlet-1936-e1979-big-twin-4-sebesseg","title":"váltó főtengely tömítéskészlet - 1936-E1979 Big Twin 4 sebesség","description":"Main drive oil seal kit. Includes lock washers and mainshaft seals. Complete as shown. 36-E79 4-speed Big Twin (NU)","brand":"ATHENA","offers":[{"title":"Default Title","offer_id":57703071252812,"sku":"980502","price":17.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1043\/4881\/1596\/files\/c02ab4_10386a373fd049d6a09240d40eaaf671_mv2_38a90377-440c-4e82-ab07-f087ab854670.jpg?v=1780515099"},{"product_id":"valto-fotengely-tomiteskeszlet-evo-xl","title":"váltó főtengely tömítéskészlet - Evo XL","description":"Tartalmazza az összes főtengely szimeringet. 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