{"product_id":"wiseco-v-twin-piston-kit-1200-sportster-10-5-1-comp-k1747","title":"Wiseco 1200 Sportster 10.5:1 Compression Piston Kit - K1747 - Harley Sportster","description":"\u003c!-- vt:seo-start --\u003e\n\u003cp style=\"line-height:1.65;\"\u003eThe Wiseco K1747 is a forged piston kit with a 10.5:1 compression ratio, built from high-silicon aluminum for riders who want a more responsive and durable V-twin engine. Wiseco pistons are made to a precision diamond-turned finish, and the kit is designed to work with all common cylinder bore types.\u003c\/p\u003e\n\u003cp style=\"line-height:1.65;\"\u003eForged high-silicon, low-expansion aluminum gives these pistons greater strength than cast pistons while keeping the weight down. The reduced weight improves engine response, and the alloy offers improved heat dissipation for longer engine life. The 10.5:1 compression ratio is intended to deliver a noticeable increase in throttle response and overall engine output.\u003c\/p\u003e\n\u003cp style=\"line-height:1.65;\"\u003eThese Wiseco pistons suit riders who expect more from their engine and are a practical choice for performance builds. Because the increased compression changes how the engine runs, the product information recommends consulting a professional tuner after installation to optimize performance and longevity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor off-road \/ closed-course race use only.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 style=\"margin:20px 0 6px;\"\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Wiseco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e K1747\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Piston Kits \u0026amp; Components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression Ratio:\u003c\/strong\u003e 10.5:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Forged high-silicon aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Precision diamond-turned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Bore:\u003c\/strong\u003e Works with all common cylinder bore types\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.4 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eCommon questions\u003c\/h3\u003e\u003cdiv class=\"vt-faq\"\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eWhat material are these pistons made from?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThe pistons are forged from high-silicon, low-expansion aluminum, which provides strength and improved heat dissipation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eWhat compression ratio does this kit have?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThis piston kit has a 10.5:1 compression ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eIs a tuner recommended after installing this kit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eYes, the product information recommends consulting a professional tuner after installation to optimize engine performance and longevity with the increased compression.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What material are these pistons made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The pistons are forged from high-silicon, low-expansion aluminum, which provides strength and improved heat dissipation.\"}}, {\"@type\": \"Question\", \"name\": \"What compression ratio does this kit have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This piston kit has a 10.5:1 compression ratio.\"}}, {\"@type\": \"Question\", \"name\": \"Is a tuner recommended after installing this kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the product information recommends consulting a professional tuner after installation to optimize engine performance and longevity with the increased compression.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":53035619844207,"sku":"K1747","price":466.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/014c-5c62f819ba067.jpg?v=1777528970","url":"https:\/\/vtwinbikers.com\/products\/wiseco-v-twin-piston-kit-1200-sportster-10-5-1-comp-k1747","provider":"VTWIN BIKERS","version":"1.0","type":"link"}