{"product_id":"spi-020-over-bore-piston-kit-for-yamaha-exciter-570-ii-ex570-1987-1993-73-5mm","title":"SPI .020 Over Bore Piston Kit for Yamaha Exciter 570 \/ II EX570 1987-1993 73.5mm","description":"\u003ch2\u003e.020 Over Bore Piston Kit for Yamaha Exciter 570 \/ II EX570 1987-1993\u003c\/h2\u003e\u003cp\u003eThis .020 over bore piston kit provides a 73.5mm piston for restoring compression in Yamaha Exciter 570 and II EX570 snowmobile engines from 1987 to 1993.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis .020 over bore piston kit is a direct replacement for worn pistons in Yamaha Exciter 570 and II EX570 snowmobiles. Designed for engines requiring a .020 oversize piston, it restores proper compression and power output. The 73.5mm bore size matches the oversize specification for these models.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined .020 oversize piston for exact fit\u003c\/li\u003e\n\u003cli\u003e73.5mm piston diameter for optimal cylinder clearance\u003c\/li\u003e\n\u003cli\u003eHigh-strength cast aluminum construction for durability\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings, wrist pin, and circlips\u003c\/li\u003e\n\u003cli\u003eCompatible with stock connecting rods and bearings\u003c\/li\u003e\n\u003cli\u003eDesigned to meet OEM specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Yamaha Exciter 570 (1987-1993)\u003c\/li\u003e\n\u003cli\u003efor Yamaha Exciter II EX570 (1987-1993)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRebuilding top end of Yamaha Exciter snowmobile engines\u003c\/li\u003e\n\u003cli\u003eRestoring compression and performance in high-mileage machines\u003c\/li\u003e\n\u003cli\u003eUsed during full engine overhaul or cylinder reboring\u003c\/li\u003e\n\u003cli\u003eReplacing original pistons for improved reliability\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\u003e73.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.020 over\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYamaha Exciter 570 \/ II EX570\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1987-1993\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 Is this piston kit a direct replacement for the original? \u003cstrong\u003eA:\u003c\/strong\u003e This kit is a .020 oversize replacement, so the cylinder must be bored to match. Always check piston-to-wall clearance and ring gap before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this kit include everything needed for installation? \u003cstrong\u003eA:\u003c\/strong\u003e The kit typically includes the piston, rings, wrist pin, and circlips. Additional gaskets and seals are sold separately.\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":44890417954902,"sku":"SZ1F10969","price":120.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_32d0e8cb-2ed4-4b31-b3cd-58321be861a9.jpg?v=1781139179","url":"https:\/\/www.solidspare.com\/products\/spi-020-over-bore-piston-kit-for-yamaha-exciter-570-ii-ex570-1987-1993-73-5mm","provider":"Solid Spare","version":"1.0","type":"link"}