{"product_id":"4-stroke-big-bore-piston-kit","title":"4-Stroke Big Bore Piston Kit","description":"\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eAthena 4-Stroke Big Bore Piston Kit\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eUpgrade engine performance\u003c\/strong\u003e with the Athena 4-Stroke Big Bore Piston Kit — precision engineered for reliable power, durability, and smooth operation in high-performance motorcycles, ATVs, and off-road machines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Designed for 4-stroke engines where big-bore conversion is required; check vehicle compatibility before purchase.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality construction:\u003c\/strong\u003e Forged or high-grade cast piston options with optimized skirt coatings to reduce friction and wear.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance gains:\u003c\/strong\u003e Increased displacement for improved torque and horsepower, ideal for racing, trail riding, and tuning projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Includes piston, rings, wrist pin, and circlips for a straightforward installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision machining:\u003c\/strong\u003e Tight tolerances and balanced components ensure consistent compression and long service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoose Athena for proven engineering and track-tested reliability. Whether rebuilding or upgrading, this Big Bore Piston Kit delivers measurable gains in acceleration and throttle response while maintaining smooth, dependable operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKeywords:\u003c\/strong\u003e Athena piston kit, 4-stroke big bore, big bore piston, performance piston kit, motorcycle piston upgrade.\u003c\/p\u003e","brand":"Athena","offers":[{"title":"99.96 mm \/ Piston \/ Piston Kits","offer_id":52239926559038,"sku":"68-4471B-51s","price":253.06,"currency_code":"USD","in_stock":false},{"title":"67.95 mm \/ Piston \/ Piston Kits","offer_id":52239926591806,"sku":"68-4944A-51s","price":125.48,"currency_code":"USD","in_stock":true},{"title":"67.96 mm \/ Piston \/ Piston Kits","offer_id":52239926624574,"sku":"68-4944B-51s","price":120.22,"currency_code":"USD","in_stock":false},{"title":"97.94 mm \/ Piston \/ Piston Kits","offer_id":52239926657342,"sku":"68-4985A-51s","price":261.67,"currency_code":"USD","in_stock":false},{"title":"97.95 mm \/ Piston \/ Piston Kits","offer_id":52239926690110,"sku":"68-4985B-51s","price":261.67,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/0373\/5614\/files\/e8e0-5b89ac8a31956.jpg?v=1758327586","url":"https:\/\/thed-zone.myshopify.com\/products\/4-stroke-big-bore-piston-kit","provider":"thed.zone","version":"1.0","type":"link"}