{"product_id":"top-end-piston-kit-12-head-ktm-hqv-gas-sx65-24-on-tc65-24-on-mc65-24-on-various-sizes","title":"TOP END PISTON KIT 12° HEAD KTM\/HQV\/GAS SX65 24-ON, TC65 24-ON, MC65 24-ON (VARIOUS SIZES)","description":"\u003ch1\u003e\u003cstrong\u003eVertex Two-stroke Pistons\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch4\u003eManufactured in Italy, Vertex, the premier brand of OEM replacement pistons, is the OEM supplier to KTM and numerous European motorcycle and go-kart manufacturers. Vertex offers enthusiasts state-of-the-art, high-quality pistons for nearly any powersport use from motorcycles and ATVs to marine and karting. Manufactured to the highest standards in Japan, Vertex’s piston rings are produced by the OEM suppliers so that they are direct OEM replacements. Vertex is the choice of those who truly seek the optimum in powersport performance in any application.\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eCast vs. Forged\u003cbr\u003eWhat’s better and why:\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eBecause of a cast piston’s ability to contain higher silicon content compared to forged pistons, and because two strokes have lower cylinder pressures when compared to four-strokes, cast pistons are ideal for two-stroke engines. Vertex pistons are gravity cast from an aluminum alloy with\u003cbr\u003e18% silicon content. Silicon is important because:\u003cbr\u003e• It decreases thermal expansion, which changes the geometry after the piston reaches operating temperature. With low thermal expansion characteristics, Vertex pistons can be run at tighter tolerances compared with forged pistons. This creates better power and performance, also making them less susceptible to rattling or breaking.\u003cbr\u003e• Silicon gives the pistons better wear characteristics and prolongs piston life by decreasing wear on the piston skirt.\u003cbr\u003e\u003cbr\u003eAiding in the break-in process and reducing wear, every Vertex piston has a Molybdenum Disulphide (MOS2) coating on the piston skirt.\u003c\/h4\u003e\n\u003ch4\u003e• Standard pistons and components are OEM replacements.\u003cbr\u003e• Kits include piston, rings, wrist pin and circlips.\u003cbr\u003e• All pistons are heat treated with a T-5 or T-6 hardening and tempering cycle.\u003cbr\u003e• Replacement rings are sold individually.\u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cspan\u003eFor 2 Stroke Engines:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Complete Piston Kit, Top End Gasket Kit \u0026amp; Wrist Pin Bearing.\u003c\/span\u003e\u003c\/p\u003e","brand":"Vertex","offers":[{"title":"A\/B","offer_id":55470381793656,"sku":"8VTK24678AB-1","price":89.99,"currency_code":"GBP","in_stock":false},{"title":"C\/D","offer_id":55470381826424,"sku":"8VTK24678CD-1","price":89.99,"currency_code":"GBP","in_stock":true},{"title":"E\/F","offer_id":55470381859192,"sku":"8VTK24678EF-1","price":89.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/0278\/5328\/files\/VTK23430AB-1.jpg?v=1765276822","url":"https:\/\/dirtstore.co.uk\/products\/top-end-piston-kit-12-head-ktm-hqv-gas-sx65-24-on-tc65-24-on-mc65-24-on-various-sizes","provider":"Dirt Store","version":"1.0","type":"link"}