{"product_id":"512m05700-wiseco-piston-kit-040-for-yamaha-yz125-1984-57-00-mm","title":"512M05700 Wiseco Piston Kit .040 for Yamaha YZ125 1984 57.00 mm","description":"\u003ch2\u003eWiseco Piston Kit for Yamaha YZ125\u003c\/h2\u003e\u003cp\u003eWiseco .040 oversize piston kit for the 1984 Yamaha YZ125, cross-referenced to 512M05700 and sized at 57.00 mm to restore top-end compression on a worn or freshly bored cylinder.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Wiseco .040 piston kit for Yamaha YZ125 gives 1984 owners a proven top-end rebuild option when the cylinder has been bored to the next oversize. The kit is built around the 512M05700 part number and a 57.00 mm bore, matching the .040 step over stock. Riders and shops rebuilding a tired 1984 Yamaha YZ125 will find this piston kit suits refresh work on a machine that needs compression and ring seal back.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eForged piston construction for strength under high-rpm two-stroke loads\u003c\/li\u003e\n\u003cli\u003e.040 oversize sizing matched to a 57.00 mm bore\u003c\/li\u003e\n\u003cli\u003eCross-referenced to part number 512M05700 for easy verification\u003c\/li\u003e\n\u003cli\u003eRing, pin, and clip hardware included for a complete top-end install\u003c\/li\u003e\n\u003cli\u003eDesigned as a direct-fit replacement for the 1984 Yamaha YZ125\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Yamaha YZ125, 1984\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTop-end rebuilds after a cylinder bore or hone\u003c\/li\u003e\n\u003cli\u003eRestoring compression on a high-hour 1984 YZ125\u003c\/li\u003e\n\u003cli\u003eRace-day refresh between motos or events\u003c\/li\u003e\n\u003cli\u003eTrail and track riding where reliable ring seal matters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e512M05700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e57.00 mm (.040 oversize)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMachine\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003efor Yamaha YZ125, 1984\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 Does this kit require boring the cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, a .040 oversize piston is intended for a cylinder that has been bored or honed to 57.00 mm to match. Confirm your current bore before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this an original Yamaha part? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a Wiseco piston kit made for the Yamaha YZ125 and is not an original equipment Yamaha part. The 512M05700 reference helps confirm fitment.\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":51140084531286,"sku":"OO1C22530","price":323.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_4d5b937e-da68-488f-9739-5c7ff3216417.jpg?v=1794565921","url":"https:\/\/www.solidspare.com\/products\/512m05700-wiseco-piston-kit-040-for-yamaha-yz125-1984-57-00-mm","provider":"Solid Spare","version":"1.0","type":"link"}