{"product_id":"namura-standard-bore-size-a-66-34mm-piston-kit-for-ktm-250-sx-sxs-exc-xc-66-4mm","title":"Namura Standard Bore Size A 66.34mm Piston Kit for KTM 250 SX SXS EXC XC 66.4mm","description":"\u003ch2\u003eStandard Bore Size A 66.34mm Piston Kit for KTM\u003c\/h2\u003e\u003cp\u003eThis piston kit is a direct replacement for KTM 250 SX, SXS, EXC, and XC models, featuring a 66.34mm bore size to restore OEM compression and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis piston kit provides a reliable replacement for your KTM 250 dirt bike, delivering consistent power and durability. Designed for models requiring a 66.34mm bore, this piston kit ensures proper fitment and long service life. Ideal for riders seeking to maintain or rebuild their KTM 250 engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined from high-strength aluminum alloy\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings, wrist pin, and circlips\u003c\/li\u003e\n\u003cli\u003eCompatible with stock cylinder dimensions\u003c\/li\u003e\n\u003cli\u003eReduces engine wear with improved thermal management\u003c\/li\u003e\n\u003cli\u003eTested for consistent compression and sealing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor KTM 250 SX\u003c\/li\u003e\n\u003cli\u003efor KTM 250 SXS\u003c\/li\u003e\n\u003cli\u003efor KTM 250 EXC\u003c\/li\u003e\n\u003cli\u003efor KTM 250 XC\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMotocross racing and track days\u003c\/li\u003e\n\u003cli\u003eEnduro and cross-country riding\u003c\/li\u003e\n\u003cli\u003eTrail riding and recreational off-road\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds and top-end replacements\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 Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66.34mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOversize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.06mm relative to 66.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKTM 250 SX\/SXS\/EXC\/XC\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 What is the recommended break-in for this piston kit?\u003cstrong\u003eA:\u003c\/strong\u003e Follow the engine manufacturer's break-in guidelines, typically avoiding sustained high RPM for the first hour of operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this piston kit include wrist pin bearings?\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the kit includes the wrist pin, circlips, and rings for a complete top-end rebuild.\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":44890634911830,"sku":"SZ1F12091","price":142.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_8b7f4979-fa3a-438a-88dd-26ef054b39c5.jpg?v=1781142286","url":"https:\/\/www.solidspare.com\/products\/namura-standard-bore-size-a-66-34mm-piston-kit-for-ktm-250-sx-sxs-exc-xc-66-4mm","provider":"Solid Spare","version":"1.0","type":"link"}