{"product_id":"wiseco-forged-piston-kit-yamaha-yfm80-raptor-badger-50mm-big-bore-4stroke","title":"Wiseco Forged Series Piston Kit with Gaskets - Yamaha YFM80 Raptor\/Badger\/Grizzly (1994-2008) - 50.00mm Bore (+3.00mm Big Bore) - 4-Stroke","description":"\u003ch2\u003eWiseco Forged Series Piston Kit with Gaskets - Yamaha YFM80 - +3.00mm Big Bore\u003c\/h2\u003e\n\u003cp\u003ePremium Wiseco Forged Series piston kit for Yamaha YFM80 youth ATV platform. \u003cstrong\u003e+3.00mm BIG BORE (50.00mm)\u003c\/strong\u003e increases displacement to 90cc!\u003c\/p\u003e\n\u003ch3\u003e⚠️ Big Bore Kit - Cylinder Boring Required\u003c\/h3\u003e\n\u003cp\u003eThis piston is +3.00mm oversize. Cylinder boring to 50.00mm is required for proper fit.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eForged Series Piston\u003c\/li\u003e\n\u003cli\u003eRing Set\u003c\/li\u003e\n\u003cli\u003eWrist Pin\u003c\/li\u003e\n\u003cli\u003eWrist Pin Retainer Set\u003c\/li\u003e\n\u003cli\u003eComplete Gasket Kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePiston Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBore Size: 50.00 mm (+3.00mm Big Bore)\u003c\/li\u003e\n\u003cli\u003ePiston Diameter: 49.95 mm\u003c\/li\u003e\n\u003cli\u003eStroke Length: 45.60 mm\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 11.0:1\u003c\/li\u003e\n\u003cli\u003eMaterial: 4032 Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003eSkirt Coating: Non-Coated\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngine Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisplacement: 90cc (increased from 80cc)\u003c\/li\u003e\n\u003cli\u003eEngine Type: 4-Stroke\u003c\/li\u003e\n\u003cli\u003eWeight: 0.8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYamaha YFM80W Raptor: 2002-2008\u003c\/li\u003e\n\u003cli\u003eYamaha YFM80 Grizzly: 2005\u003c\/li\u003e\n\u003cli\u003eYamaha YFM80 Badger: 1994-2001\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Parts Unlimited","offers":[{"title":"Default Title","offer_id":47708256534753,"sku":"0903-0663","price":312.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1219\/2993\/files\/Screenshot2025-12-16155748.png?v=1765929868","url":"https:\/\/dunegoonshop.com\/en-ca\/products\/wiseco-forged-piston-kit-yamaha-yfm80-raptor-badger-50mm-big-bore-4stroke","provider":"Dune Goons","version":"1.0","type":"link"}