{"product_id":"wiseco-pk1173-piston-kit-yamaha-yz125-moto-house-mx","title":"Wiseco Pro-Lite Piston Kit with Gaskets PK1173 — Yamaha YZ125 1998-2000","description":"\u003ch1\u003e\u003cstrong\u003eWiseco Pro-Lite Piston Kit with Gaskets PK1173 — Yamaha YZ125 1998-2000\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWiseco Pro-Lite Piston Kit\u003c\/strong\u003e is the premier choice for riders looking to restore their Yamaha YZ125 to factory-level performance. Engineered from high-strength 4032 aluminum alloy, these pistons provide an excellent balance of durability, reduced friction, and thermal stability essential for \u003cstrong\u003ehigh-performance 2-stroke engines\u003c\/strong\u003e. This all-in-one kit streamlines your \u003cstrong\u003etop-end rebuild\u003c\/strong\u003e process by including the piston, rings, wrist pin, circlips, and a complete top-end gasket set.\u003c\/p\u003e\n\u003cp\u003eWiseco’s Pro-Lite series is designed to handle the intense stress of motocross racing while maintaining precise tolerances. Because Wiseco pistons and rings are engineered as a matched set, they ensure superior sealing and longevity. Whether you are performing scheduled engine maintenance or chasing a podium finish, this kit provides the reliability and precision your YZ125 deserves.\u003c\/p\u003e\n\u003ch3\u003eTop Features: Wiseco Pro-Lite Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplete top-end kit including piston, rings, wrist pin, circlips, and full gasket set\u003c\/li\u003e\n\u003cli\u003eManufactured from 4032 aluminum alloy for exceptional strength and resistance to thermal expansion\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered design for a perfect fit and optimized 2-stroke combustion\u003c\/li\u003e\n\u003cli\u003eIncludes everything needed for a single complete engine top-end overhaul\u003c\/li\u003e\n\u003cli\u003eDesigned specifically to meet the high-RPM demands of the Yamaha YZ125\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eFitment List\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; margin-top: 15px; margin-bottom: 15px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e1998-2000\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYamaha\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYZ125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use different brands of rings with my new Wiseco piston?\u003c\/strong\u003e\u003cbr\u003eA: No, Wiseco pistons must be fitted specifically with Wiseco rings. Using unauthorized rings can result in incorrect ring end gap, poor sealing, and potential engine failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include the cylinder sleeve?\u003c\/strong\u003e\u003cbr\u003eA: No, this kit includes the piston, rings, and gasket set. If your cylinder sleeve is damaged or worn beyond service limits, it must be addressed separately by re-plating or re-sleeving the cylinder.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e Always check your ring end gap by placing the ring inside your cylinder and using a feeler gauge before final assembly. A gap that is too tight can cause the ring to seize when the engine hits operating temperature. Additionally, always clean your power valve assembly while the top end is off; carbon buildup there is the #1 hidden performance robber on these YZ125s.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Pairings:\u003c\/strong\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/unlock-peak-performance-for-your-yamaha-yz125-high-quality-parts-accessories\"\u003eYamaha YZ125 Performance Parts \u0026amp; Upgrades\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-2-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eYamaha 2-Stroke Performance Parts\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/premium-motorcycle-chemicals-brake-fluid-bike-wash-coolant-chain-lubes\"\u003ePremium Motorcycle Chemicals \u0026amp; Assembly Lubes\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eAt Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMoto-House MX – Choice of Champions\u003c\/strong\u003e – Clermont \/ Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":39786770792531,"sku":"PK1173","price":203.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/wiseco-top-end-kit-pro-lite-pk1173-5400-mm-1998-2000-yamaha-yz125-196172.jpg?v=1738050669","url":"https:\/\/motohousemx.com\/products\/wiseco-pk1173-piston-kit-yamaha-yz125-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}