{"product_id":"namura-040-over-bore-piston-kit-for-polaris-trail-blazer-250-1990-2006-73mm","title":"Namura .040 Over Bore Piston Kit for Polaris Trail Blazer 250  1990-2006 73mm","description":"\u003ch2\u003eNamura .040 Over Bore Piston Kit for Polaris\u003c\/h2\u003e\u003cp\u003eThis .040 over bore piston kit is a direct replacement for the Polaris Trail Blazer 250, providing the necessary components to rebuild the engine with an oversized piston for restoring compression and performance.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe Namura .040 over bore piston kit is designed for the Polaris Trail Blazer 250 from 1990 through 2006, delivering a reliable and durable piston assembly with rings, pin, and clips to refresh a worn cylinder. This kit ensures proper fitment and longevity for your ATV's engine rebuild.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh‑silicon aluminum alloy construction reduces expansion and noise\u003c\/li\u003e\n\u003cli\u003ePrecision‑machined to .040 over bore specification (73mm) for a proper cylinder fit\u003c\/li\u003e\n\u003cli\u003eIncludes a matched set of piston rings for optimal sealing\u003c\/li\u003e\n\u003cli\u003eWrist pin and retaining clips are included for complete installation\u003c\/li\u003e\n\u003cli\u003eCNC‑profiled skirt reduces friction and wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Polaris Trail Blazer 250 (1990‑2006)\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn‑The‑Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eATV trail riding and recreational off‑road use\u003c\/li\u003e\n\u003cli\u003eEngine rebuilds where cylinder bore correction is needed\u003c\/li\u003e\n\u003cli\u003eRestoring performance in high‑mileage Polaris Trail Blazer 250 engines\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\u003e.040 over (73mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eYears\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1990‑2006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston, rings, wrist pin, clips\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 Will this piston kit work with a standard cylinder? \u003cstrong\u003eA:\u003c\/strong\u003e No, the .040 over bore piston requires the cylinder to be bored to the matching oversize dimension; a standard cylinder will not fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this kit include a top end gasket set? \u003cstrong\u003eA:\u003c\/strong\u003e No, this is a piston kit only; you will need to purchase a separate gasket set 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":44890489716822,"sku":"SZ1F11838","price":136.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_d95fd15b-7b90-4e9e-804d-7a6a36c8cf94.jpg?v=1781140583","url":"https:\/\/www.solidspare.com\/products\/namura-040-over-bore-piston-kit-for-polaris-trail-blazer-250-1990-2006-73mm","provider":"Solid Spare","version":"1.0","type":"link"}