{"product_id":"pistao-prox-yamaha-yz-250-suzuki-rm-250-1999-2027","title":"PROX PISTON YAMAHA YZ 250 \/ SUZUKI RM 250 1999-2027","description":"\u003ch4\u003ePROX Piston Yamaha YZ 250 \/ Suzuki RM 250 1999-2027\u003c\/h4\u003e\u003cp\u003eThe PROX Racing Parts piston is designed for the maintenance and rebuilding of 2-stroke motocross engines, combining wear resistance, dimensional stability and reliability under demanding riding conditions.\u003c\/p\u003e\u003cp\u003ePROX cast pistons are manufactured from an aluminum alloy using a gravity-casting process, with approximately 18% silicon content. This composition helps reduce thermal expansion and maintain precise operating clearances between the piston and cylinder.\u003c\/p\u003e\u003cp\u003eThe silicon content also supports piston skirt wear resistance and operation in cast-iron or nickel-silicon-coated cylinder bores. PROX additionally develops specific skirt coatings, surface treatments and lubrication solutions, with availability depending on the individual piston part number.\u003c\/p\u003e\u003cdiv\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\u003cli\u003eBrand: PROX Racing Parts\u003c\/li\u003e\u003cli\u003eType: 2-stroke engine piston\u003c\/li\u003e\u003cli\u003eMaterial used in PROX cast pistons: aluminum alloy\u003c\/li\u003e\u003cli\u003eManufacturing process: gravity casting\u003c\/li\u003e\u003cli\u003eApproximate silicon content: 18%\u003c\/li\u003e\u003cli\u003eLow thermal expansion characteristics\u003c\/li\u003e\u003cli\u003eDesigned for wear resistance and dimensional stability\u003c\/li\u003e\u003cli\u003eSkirt coating, anodizing and lubrication holes: dependent on the specific part number\u003c\/li\u003e\u003cli\u003ePiston diameter, size grade and included components not specified\u003c\/li\u003e\u003c\/ul\u003e\u003cdiv\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\u003cli\u003eEnables piston replacement during engine rebuilding\u003c\/li\u003e\u003cli\u003eHelps maintain stable operating clearances\u003c\/li\u003e\u003cli\u003eReduces thermal expansion through the alloy composition\u003c\/li\u003e\u003cli\u003eSupports piston skirt wear resistance\u003c\/li\u003e\u003cli\u003eContributes to engine top-end durability\u003c\/li\u003e\u003cli\u003eConstruction developed for the demands of 2-stroke motocross engines\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Verify the part number, piston diameter and size grade before installation. Follow the manufacturer's recommended clearances, break-in procedures and lubrication requirements. Consult the compatibility table below to confirm the applicable motorcycle models and years.\u003c\/p\u003e","brand":"PROX","offers":[{"title":"A - Ø66.35MM","offer_id":54631233192283,"sku":"01.2321.A","price":160.09,"currency_code":"EUR","in_stock":true},{"title":"B - Ø66.36MM","offer_id":54631233225051,"sku":"01.2321.B","price":160.09,"currency_code":"EUR","in_stock":true},{"title":"C - Ø66.37MM","offer_id":54631233257819,"sku":"01.2321.C","price":160.09,"currency_code":"EUR","in_stock":true},{"title":"D - Ø66.38MM","offer_id":54631233290587,"sku":"01.2321.D","price":160.09,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0059\/0757\/8980\/files\/pistao-prox-yamaha-yz-250-suzuki-rm-250-1999-2027-01.2321.A-1.jpg?v=1793784661","url":"https:\/\/www.teammxag57.com\/en\/products\/pistao-prox-yamaha-yz-250-suzuki-rm-250-1999-2027","provider":"Team Mx AG57","version":"1.0","type":"link"}