{"product_id":"cylinder-kit-40-00mm-std-01-06-polaris-50-scrambler-sportsman-predator","title":"CYLINDER KIT 40.00mm STD 01-06 POLARIS 50 SCRAMBLER SPORTSMAN PREDATOR","description":"\u003cp\u003eComplete 40.00 mm top-end cylinder kit for Polaris 50 cc two-stroke youth ATVs, supplied with cylinder, piston, rings, gaskets and cylinder head. Designed for the 50 cc Scrambler, Sportsman and Predator models that use a 40 mm bore, 10 mm wrist pin and 50 mm stud spacing; not suitable for 90 cc engines, which require a 52 mm bore kit.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eComplete kit: cylinder, piston, piston rings, gaskets and cylinder head\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eFor 50 cc two-stroke Polaris youth engines\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e40.00 mm bore cylinder\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e10 mm wrist pin compatibility\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e50 mm cylinder stud spacing\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eEngine type: single-cylinder, two-stroke, air-cooled\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eBore × stroke: 40.00 mm × ~39.1 mm (≈49 cc)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eWrist pin diameter: 10 mm\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCylinder stud spacing: 50 mm (centre-to-centre)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eSpark plug type: NGK BPR7HS\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eCylinder: 0451718 (50 cc applications)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCylinder head: 0451717 (50 cc applications)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eBase gasket: 0450008 (50 cc applications)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eHead gasket: 0450003 (50 cc applications)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePiston (Predator 50): 0453833 (50 cc applications)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eSpark plug: 0450005 (BPR7HS)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eStud, cylinder\/head: 0450010; nuts: 0450011, 0450012\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCylinder: 0450007 (90 cc\/52 mm applications – not for this 40 mm kit)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eGaskets: 0455372 (base), 0455373 (head) (90 cc\/52 mm applications – not for this 40 mm kit)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePiston kits: 0450802, 0450704, 0450651 (90 cc applications – not for this 40 mm kit)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003ePolaris Scrambler 50 (2001–2003)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePolaris Sportsman 50 (2001–2003)\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePolaris Predator 50 (2004–2006)\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color:#FF0000\"\u003eNote: Polaris 90 cc models (Scrambler 90, Sportsman 90, Predator 90) require a 52 mm bore cylinder kit and are not compatible with this 40 mm kit\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":56653734117749,"sku":"56-K239.40.CK","price":51.89,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/56-k239-40-ck.jpg?v=1769191698","url":"https:\/\/www.smxoffroad.com\/es\/products\/cylinder-kit-40-00mm-std-01-06-polaris-50-scrambler-sportsman-predator","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}