{"product_id":"vertex-sherco-piston-kit-250cc","title":"Vertex Sherco Piston Kit - 250cc","description":"\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eVertex Sherco 250 Piston Kit\u003c\/b\u003e\u003c\/span\u003e is a replacement piston kit for compatible Sherco 250cc two-stroke trials motorcycles. Manufactured by Vertex, these pistons are designed for engine maintenance, piston replacements and top-end rebuilds.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAvailable in four piston grades (A, B, C and D), each kit includes a piston, piston rings, gudgeon pin and circlips.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePiston Sizes\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"8\" width=\"100%\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePiston Grade\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eDiameter\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eSherco OEM Reference\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003eA\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003e72.75mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003eM009\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003eB\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003e72.76mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003eM586\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003eC\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003e72.77mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003eM587\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003eD\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003e72.78mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"p1\"\u003eM588\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"p1\"\u003eSize A is the smallest piston grade, with each subsequent size increasing in diameter by 0.01mm. The piston grade is marked on the piston crown for identification.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003ePiston diameters:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 72.75–72.78mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eRecommended piston-to-cylinder clearance:\u003c\/b\u003e\u003c\/span\u003e 0.024–0.035mm (2009 Sherco specification)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003ePiston measurement position:\u003c\/b\u003e\u003c\/span\u003e 19mm above the bottom of the skirt\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eReference measurement temperature:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 24°C\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003e\u003cb\u003eRequired little-end bearing:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 18 × 22 × 22mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eChoosing the Correct Piston Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eSelecting the correct piston grade is essential for maintaining the recommended piston-to-cylinder clearance.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eCylinder wear may vary throughout the bore, so measurements should be taken at several points along its length and in both directions before selecting a replacement piston.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eVertex pistons are manufactured with a tapered and oval profile to accommodate thermal expansion during operation. For accurate sizing, the piston should be measured front to back, 19mm above the bottom of the skirt, at approximately 24°C.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eImportant Fitment Information\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThese replacement pistons require an \u003cspan class=\"s1\"\u003e\u003cb\u003e18 × 22 × 22mm little-end bearing\u003c\/b\u003e\u003c\/span\u003e. The older Sherco M043 bearing is not compatible and must be replaced where fitted.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCompatibility\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eSuitable for Sherco 250cc two-stroke trials motorcycles using the M009, M586, M587 or M588 piston specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003ePlease Note\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAlways confirm your existing piston grade, cylinder measurements and model compatibility before ordering.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eIf you’re unsure which piston size you require, please contact Road and Trials for advice.\u003c\/p\u003e","brand":"Vertex","offers":[{"title":"A - 72.75mm","offer_id":60231391150464,"sku":"VERETEX22674A","price":139.99,"currency_code":"GBP","in_stock":true},{"title":"B - 72.76mm","offer_id":60231391183232,"sku":"VERETEX22674B","price":139.99,"currency_code":"GBP","in_stock":true},{"title":"C - 72.77mm","offer_id":60231391216000,"sku":"VERETEX22674C","price":139.99,"currency_code":"GBP","in_stock":true},{"title":"D - 72.78mm","offer_id":60231391248768,"sku":"VERETEX22674D","price":139.99,"currency_code":"GBP","in_stock":false}],"url":"https:\/\/roadandtrials.co.uk\/products\/vertex-sherco-piston-kit-250cc","provider":"Road and Trials","version":"1.0","type":"link"}