{"product_id":"jp01549","title":"Naraku 52.4mm Performance Piston Kit – QMB139 – Part #NK100.64","description":"\u003cp data-start=\"188\" data-end=\"512\"\u003e\u003cstrong data-start=\"211\" data-end=\"251\"\u003eNaraku 52.4mm Performance Piston Kit\u003c\/strong\u003e is designed as a replacement or upgrade for \u003cstrong data-start=\"296\" data-end=\"324\"\u003eQMB139 50cc\/49cc engines\u003c\/strong\u003e that have been fitted with a \u003cstrong data-start=\"354\" data-end=\"382\"\u003e52.4mm big bore cylinder\u003c\/strong\u003e. Perfect for rebuilds, this piston kit helps restore compression, performance, and reliability in your 4-stroke scooter engine.\u003c\/p\u003e\n\u003cp data-start=\"514\" data-end=\"685\"\u003eThis high-quality piston set can be used with standard or performance big bore cylinders and offers precise fitment and durable construction for long-term dependability.\u003c\/p\u003e\n\u003cp data-start=\"687\" data-end=\"702\"\u003e\u003cstrong data-start=\"687\" data-end=\"700\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"703\" data-end=\"993\"\u003e\n\u003cli data-start=\"703\" data-end=\"760\"\u003e\n\u003cp data-start=\"705\" data-end=\"760\"\u003eGenuine \u003cstrong data-start=\"713\" data-end=\"758\"\u003eNaraku performance replacement piston kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"761\" data-end=\"830\"\u003e\n\u003cp data-start=\"763\" data-end=\"830\"\u003eDesigned for use with \u003cstrong data-start=\"785\" data-end=\"810\"\u003e52.4mm bore cylinders\u003c\/strong\u003e (89cc conversion)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"831\" data-end=\"879\"\u003e\n\u003cp data-start=\"833\" data-end=\"879\"\u003eIdeal for maintenance, rebuilds, or upgrades\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"880\" data-end=\"962\"\u003e\n\u003cp data-start=\"882\" data-end=\"962\"\u003ePrecision-machined aluminum piston for excellent heat transfer and reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"963\" data-end=\"993\"\u003e\n\u003cp data-start=\"965\" data-end=\"993\"\u003eOEM-quality fit and finish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"995\" data-end=\"1016\"\u003e\u003cstrong data-start=\"995\" data-end=\"1014\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1017\" data-end=\"1357\"\u003e\n\u003cli data-start=\"1017\" data-end=\"1042\"\u003e\n\u003cp data-start=\"1019\" data-end=\"1042\"\u003eBore Size: \u003cstrong data-start=\"1030\" data-end=\"1040\"\u003e52.4mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1043\" data-end=\"1075\"\u003e\n\u003cp data-start=\"1045\" data-end=\"1075\"\u003eWrist Pin Diameter: \u003cstrong data-start=\"1065\" data-end=\"1073\"\u003e13mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1076\" data-end=\"1146\"\u003e\n\u003cp data-start=\"1078\" data-end=\"1146\"\u003eCompression Height: \u003cstrong data-start=\"1098\" data-end=\"1106\"\u003e20mm\u003c\/strong\u003e (center of wrist pin to piston crown)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1147\" data-end=\"1176\"\u003e\n\u003cp data-start=\"1149\" data-end=\"1176\"\u003ePiston Height: \u003cstrong data-start=\"1164\" data-end=\"1174\"\u003e36.3mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1177\" data-end=\"1256\"\u003e\n\u003cp data-start=\"1179\" data-end=\"1256\"\u003eFits all \u003cstrong data-start=\"1188\" data-end=\"1227\"\u003eQMB139-based 4-stroke 50cc scooters\u003c\/strong\u003e with a 52.4mm big bore kit\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1257\" data-end=\"1357\"\u003e\n\u003cp data-start=\"1259\" data-end=\"1357\"\u003eCompatible with both \u003cstrong data-start=\"1280\" data-end=\"1312\"\u003estock 41.4mm stroke (89.3cc)\u003c\/strong\u003e and \u003cstrong data-start=\"1317\" data-end=\"1348\"\u003e44mm stroker crank (94.9cc)\u003c\/strong\u003e setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1359\" data-end=\"1374\"\u003e\u003cstrong data-start=\"1359\" data-end=\"1372\"\u003eIncludes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1375\" data-end=\"1434\"\u003e\n\u003cli data-start=\"1375\" data-end=\"1385\"\u003e\n\u003cp data-start=\"1377\" data-end=\"1385\"\u003ePiston\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1386\" data-end=\"1399\"\u003e\n\u003cp data-start=\"1388\" data-end=\"1399\"\u003eWrist Pin\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1400\" data-end=\"1417\"\u003e\n\u003cp data-start=\"1402\" data-end=\"1417\"\u003eCirclips (x2)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1418\" data-end=\"1434\"\u003e\n\u003cp data-start=\"1420\" data-end=\"1434\"\u003ePiston Rings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1436\" data-end=\"1456\"\u003e\u003cstrong data-start=\"1436\" data-end=\"1454\"\u003eCompatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1457\" data-end=\"1620\"\u003e\n\u003cli data-start=\"1457\" data-end=\"1487\"\u003e\n\u003cp data-start=\"1459\" data-end=\"1487\"\u003eQMB139 50cc \/ 49cc engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1488\" data-end=\"1620\"\u003e\n\u003cp data-start=\"1490\" data-end=\"1620\"\u003eGY6-based scooters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Moped Garage Hawaii","offers":[{"title":"Default Title","offer_id":40089295716470,"sku":"UP137-31","price":45.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/5361\/2855\/products\/JP01549.jpg?v=1694832600","url":"https:\/\/jppowersports.com\/products\/jp01549","provider":"Moped Garage Hawaii","version":"1.0","type":"link"}