{"product_id":"spi-standard-bore-piston-kit-for-yamaha-ss-440-fits-1980-1985-ss440-66mm","title":"SPI Standard Bore Piston Kit for Yamaha SS 440 fits 1980-1985 SS440 - 66mm","description":"\u003ch2\u003eSPI Standard Bore Piston Kit for Yamaha SS 440\u003c\/h2\u003e\u003cp\u003eThis SPI standard bore piston kit is a direct replacement piston assembly designed to restore compression and power in Yamaha SS 440 snowmobiles from 1980 through 1985, featuring a 66mm bore size.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis SPI standard bore piston kit provides a high-quality aftermarket piston for Yamaha SS 440 models, delivering reliable performance and a precise fit for 1980-1985 snowmobiles. The kit includes the piston, rings, and wrist pin for a complete top-end rebuild, making it a cost-effective solution for restoring lost power and compression in your Yamaha SS 440.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined from high-silicon aluminum alloy for strength and heat dissipation\u003c\/li\u003e\n\u003cli\u003eIncludes a wrist pin and circlips for secure installation\u003c\/li\u003e\n\u003cli\u003eRing set engineered for optimal compression and oil control\u003c\/li\u003e\n\u003cli\u003eStandard bore size (66mm) for cylinders within factory specifications\u003c\/li\u003e\n\u003cli\u003eCompatible with Yamaha SS440 engines from 1980-1985\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha SS 440 (1980-1985)\u003c\/li\u003e\n\u003cli\u003efor Yamaha SS440 (1980-1985)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding the top end of a Yamaha SS 440 snowmobile engine\u003c\/li\u003e\n\u003cli\u003eReplacing a failed or worn piston to restore engine performance\u003c\/li\u003e\n\u003cli\u003ePerforming a complete engine overhaul for increased reliability\u003c\/li\u003e\n\u003cli\u003eUsed in vintage snowmobile restoration projects\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha SS 440 (1980-1985)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to replace the piston rings when installing this kit? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit includes new rings, and it is recommended to always install fresh rings with a new piston to ensure proper sealing and break-in.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I use this piston kit with a cylinder that has been previously bored? \u003cstrong\u003eA:\u003c\/strong\u003e This is a standard bore piston, so the cylinder must be at original size; if it has been bored oversize, you will need an overbore piston kit.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44890420969558,"sku":"SZ1F10991","price":120.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_c0fe035a-0c9b-4aeb-a0ae-f85c693fa8d6.jpg?v=1781139205","url":"https:\/\/www.solidspare.com\/products\/spi-standard-bore-piston-kit-for-yamaha-ss-440-fits-1980-1985-ss440-66mm","provider":"Solid Spare","version":"1.0","type":"link"}