{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a4ec454976a0","name":"CRANKSHAFT BOTTOM KIT 2003-2013 YAMAHA YZF250 WISECO WPC140","sku":"56-229.WI","brand":"Wiseco","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":547.63,"formatted":"£547.63"},"summary":"A factory-assembled crankshaft kit supplied with main bearings and a gasket set for complete bottom-end service. Precision-trued to OEM specifications, it incorporates advanced surface treatments, lubrication features and tightly controlled clearances to support durability and performance under high-RPM operation. The crankshaft kit includes a crankshaft assembly, main bearings, and a gasket set. Features include connecting rods that are double-forged to maintain superior dimensional consistency through improved grain flow, shot-peened to eliminate residual stresses and smoothly blend rod forging surfaces, and have a corrosion-resistant surface treatment. Top and bottom end rod bores are case-hardened to 58–62 RC to optimise bearing running surface. Crank pin bearing radial running clearance is optimised to ensure maximum performance, and precision honing ensures an ultra-round bearing surface. Precision-engineered oiling slots maximise rod strength and bearing life. Double-drilled small ends provide the piston pin with extra lubrication and cooling, reducing distortion of the top end due to thermal transfer from the piston. Silver-coated bronze phosphor thrust washers with a dimpled design increase oil retention and reduce friction between the rod and washer interface. Crank pin bearings are manufactured with the highest-quality hot-rolled steel and case-hardened to 58–62 RC. Manufacturer: Wiseco.","attributes":[{"label":"General Product Group","value":"Crankshafts & Parts"},{"label":"General Product Type","value":"Crankshaft Bottom End Kits"},{"label":"Variant Id","value":"250323"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-229_2EWI/682ff07c80222680.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-229_2EWI/682ff07c80222680.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-229_2EWI/af2d4d05ce2e31f7.jpg"],"description":"A factory-assembled crankshaft kit supplied with main bearings and a gasket set for complete bottom-end service. Precision-trued to OEM specifications, it incorporates advanced surface treatments, lubrication features and tightly controlled clearances to support durability and performance under high-RPM operation. The crankshaft kit includes a crankshaft assembly, main bearings, and a gasket set. Features include connecting rods that are double-forged to maintain superior dimensional consistency through improved grain flow, shot-peened to eliminate residual stresses and smoothly blend rod forging surfaces, and have a corrosion-resistant surface treatment. Top and bottom end rod bores are case-hardened to 58–62 RC to optimise bearing running surface. Crank pin bearing radial running clearance is optimised to ensure maximum performance, and precision honing ensures an ultra-round bearing surface. Precision-engineered oiling slots maximise rod strength and bearing life. Double-drilled small ends provide the piston pin with extra lubrication and cooling, reducing distortion of the top end due to thermal transfer from the piston. Silver-coated bronze phosphor thrust washers with a dimpled design increase oil retention and reduce friction between the rod and washer interface. Crank pin bearings are manufactured with the highest-quality hot-rolled steel and case-hardened to 58–62 RC. Manufacturer: Wiseco.","descriptionMarkdown":"### Wiseco Crankshaft Bottom Kit\n\nThis Wiseco crankshaft kit is designed for complete bottom-end service. It comes factory-assembled and includes main bearings and a gasket set for a comprehensive repair or rebuild. Precision-trued to OEM specifications, this kit incorporates advanced surface treatments and lubrication features engineered for durability and peak performance, especially under high-RPM conditions.\n\n**Key Features:**\n\n \n- Precision-trued and factory-assembled to meet OEM specifications.\n \n- Double-forged connecting rods ensure superior dimensional consistency through optimized grain flow.\n \n- Shot-peened surface treatment eliminates residual stresses and smoothly blends forging surfaces.\n \n- Features a corrosion-resistant surface treatment for added longevity.\n \n- Top and bottom end rod bores are case-hardened to 58–62 RC, optimizing the bearing running surface.\n \n- Crank pin bearing radial running clearance is precisely controlled for maximum performance.\n \n- Precision honing creates an ultra-round bearing surface.\n \n- Engineered oiling slots enhance rod strength and extend bearing life.\n \n- Double-drilled small ends provide extra lubrication and cooling to the piston pin, reducing thermal distortion.\n \n- Silver-coated bronze phosphor thrust washers with a dimpled design improve oil retention and reduce friction.\n \n- Crank pin bearings are constructed from high-quality hot-rolled steel and case-hardened to 58–62 RC.\n\n**Kit Components:**\n\n \n- Crankshaft assembly\n \n- Main bearings\n \n- Gasket set","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2003–2013"},{"make":"YAMAHA","model":"YZF 250","cc":null,"notes":null,"years":"2003–2013"}],"collections":[{"name":"Crankshafts & Parts","url":"https://www.2brosparts.com/api/agent/collection/GB/crankshafts-parts"},{"name":"Crankshaft Bottom End Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/crankshaft-bottom-end-kits"}],"links":{"page":"https://www.2brosparts.com/products/crankshaft-bottom-kit-2003-2013-yamaha-yzf250-wiseco-wpc140","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a4ec454976a0:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a4ec454976a0:1"}},"market":{"country":"GB","countryName":"United Kingdom","locale":"en-gb","currency":"GBP","exchangeRateFromGbp":1,"pricesIncludeUkVat":true,"checkoutTax":null,"delivery":[{"name":"Standard","description":"Orders £15.00–£59.99 · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":4.99,"formatted":"£4.99"},"free":false,"minimumOrder":{"amount":0,"formatted":"£0.00","gbp":0},"weightGrams":null},{"name":"Standard","description":"Orders £60.00 and up · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":0,"formatted":"£0.00"},"free":true,"minimumOrder":{"amount":60,"formatted":"£60.00","gbp":60},"weightGrams":null}],"storeUrl":"https://www.2brosparts.com"},"navigate":{"start":"https://www.2brosparts.com/api/agent","search":"https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus}"},"howToBuy":{"summary":"Build a basket for the shopper and give them one checkout link. 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Each product also has links.buyOneNow, a ready link for one unit.","stateless":"Nothing is saved on our side. The items part of the URL is the whole basket: to change it, write the link again with the new list.","itemsFormat":"basketKey:quantity pairs joined by commas, e.g. 04f24aad4d68:2,7c1e9a0b3f2d:1. Quantity defaults to 1. Up to 50 products, 100 each.","country":"GB is the shopper's delivery country. Swap it for theirs (US, DE, FR…) in any URL; currency, tax and delivery follow it.","tips":["Put everything the shopper wants in one link.","Optionally add your name as a last path segment on checkout links (…/checkout/GB/<items>/claude) so the sale is credited to you.","The checkout link is for the shopper's browser. Do not open it yourself.","Signed-in trade account holders see their trade prices at checkout."]}}