{"product_id":"cilindro-italkit-74cc-derbi-variant-start-start-5-d-48mm-c-40","title":"Cylinder Italkit 74cc Derbi Variant Start \/ Start 5 d.48mm c.40","description":"\u003cp\u003e\u003cstrong\u003eCylinder \u003c\/strong\u003e74cc d.48mm stroke 40mm from manufacturer \u003cstrong\u003eItalkit \u003c\/strong\u003efor \u003cstrong\u003eDerbi \u003c\/strong\u003eVariant Start \/ Start 5.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003e74cc Italkit engine kit\u003c\/strong\u003e is the solution for those looking to give their \u003cstrong\u003eDerbi Variant Start\u003c\/strong\u003e or \u003cstrong\u003eStart 5\u003c\/strong\u003e more \u003cstrong\u003epower\u003c\/strong\u003e and make the \u003cstrong\u003eengine rev out more\u003c\/strong\u003e without getting into machining work. By moving to a \u003cstrong\u003e48mm diameter\u003c\/strong\u003e, you increase displacement while keeping the \u003cstrong\u003eoriginal 40mm stroke crankshaft.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt is necessary to replace the original Cylinder when you notice that the bike has lost \u003cstrong\u003ecompression\u003c\/strong\u003e or if you are looking for extra \u003cstrong\u003epower\u003c\/strong\u003e to move around more easily. This kit is made of \u003cstrong\u003ealuminum with Nikasil coating\u003c\/strong\u003e, a material that \u003cstrong\u003edissipates heat better\u003c\/strong\u003e than iron and reduces friction, preventing seizures and ensuring that the engine works at a stable temperature even when pushed at \u003cstrong\u003ehigh RPM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e6 transfer port\u003c\/strong\u003e design and the \u003cstrong\u003eexhaust port with 2 venturis\u003c\/strong\u003e improve chamber filling, achieving \u003cstrong\u003emore efficient combustion\u003c\/strong\u003e and a much fuller \u003cstrong\u003ethrottle response\u003c\/strong\u003e throughout the entire range. \u003c\/p\u003e\n\u003cp\u003eTo get the best \u003cstrong\u003eperformance \u003c\/strong\u003ewe recommend fitting a larger Carburettor, a reed valve box, and an exhaust.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical characteristics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e 74cc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 48 millimeters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke:\u003c\/strong\u003e 40 millimeters (original)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Al-Si aluminum alloy with heat treatment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating:\u003c\/strong\u003e Nickel-Silicon (Nikasil)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePorting:\u003c\/strong\u003e 6 transfers and exhaust with 2 venturis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston:\u003c\/strong\u003e 2 high-quality Piston rings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder head:\u003c\/strong\u003e Not included, use the original\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDERBI\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVARIANT START\u003c\/li\u003e\n\u003cli\u003eVARIANT START 5\u003c\/li\u003e\n\u003c\/ul\u003e ","brand":"Italkit","offers":[{"title":"Default Title","offer_id":55526617416065,"sku":"CI.12.578.G","price":138.93,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/6223\/5959\/files\/CI.12.578.G_b631a30b-cb09-4cc7-a160-4a92dd0f1bd5.webp?v=1776353106","url":"https:\/\/motoscoot.net\/en\/products\/cylinder-italkit-74cc-derbi-variant-start-start-5-d-48mm-c-40","provider":"Motoscoot","version":"1.0","type":"link"}