{"product_id":"vertex-ktm-husqvarna-gasgas-50cc-cast-replica-piston-kit-black-silver","title":"Vertex Piston Kit Cast Replica 23429CD — KTM \/ Husqvarna \/ Gas Gas 50cc 2009-2024","description":"\u003ch1\u003e\u003cstrong\u003eVertex Piston Kit Cast Replica 23429CD — KTM \/ Husqvarna \/ Gas Gas 50cc 2009-2024\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Vertex Piston Kit restores factory compression and cylinder sealing on your 50cc 2-stroke mini racer. Engineered as a direct replacement layout for stock setups, this gravity-cast aluminum alloy assembly features an 18% silicone concentration. This specialized alloy architecture drastically minimizes thermal growth during aggressive operation, allowing tighter tolerances within a standard 39.50 mm cylinder bore while preventing cold-seizures on the track.\u003c\/p\u003e\n\u003cp\u003eEvery 23429CD structural casting undergoes a precise T-5 thermal hardening and tempering cycle to maximize fatigue resistance. The exterior piston skirt is treated with an anti-friction Molybdenum Disulphite surface layer to decrease initial break-in duration and lengthen total piston life cycle. This standard-compression replacement package delivers crucial top-end restoration components, bundling the 39.47 mm piston together with high-tensile rings, a precision wrist pin, and robust retaining circlips.\u003c\/p\u003e\n\u003ch3\u003eTop Features: Vertex Piston Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGravity-cast aluminum design fortified with an 18% silicone structure to control heat expansion and stabilize ring alignment.\u003c\/li\u003e\n\u003cli\u003eHardened utilizing a thorough T-5 thermal tempering routine to bolster rigidity under demanding mini-motocross race settings.\u003c\/li\u003e\n\u003cli\u003eCoated with a Molybdenum Disulphite compound finish across the skirt area to optimize mating and minimize friction.\u003c\/li\u003e\n\u003cli\u003eIncludes the replica piston body, matching ring set, hardened wrist pin, and dual circlips for an efficient top-end refresh.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVerify your machine parameters against our application data index below to ensure proper cylinder installation prior to ordering.\u003c\/p\u003e\n\u003ch3\u003eFitment List\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px; margin-bottom: 20px; font-family: inherit;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #e2e8f0; padding: 12px; background-color: #f8fafc; text-align: left; font-weight: bold;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e2e8f0; padding: 12px; background-color: #f8fafc; text-align: left; font-weight: bold;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e2e8f0; padding: 12px; background-color: #f8fafc; text-align: left; font-weight: bold;\"\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 #e2e8f0; padding: 12px;\"\u003e2021-2024\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eGas Gas\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eMC 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2018-2019\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eHusqvarna\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eTC 50 Mini\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2017-2024\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eHusqvarna\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eTC 50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2011-2014\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eKTM\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e50 SXS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2009-2024\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eKTM\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e50 SX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2009-2023\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eKTM\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e50 SX Mini\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e2009\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003eKTM\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e2e8f0; padding: 12px;\"\u003e50 SX Pro Junior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include the top end gaskets or a wrist pin bearing?\u003c\/strong\u003e\u003cbr\u003eA: No, this is a standard piston kit containing the piston, rings, wrist pin, and circlips. Gaskets and the small-end needle bearing must be sourced separately to finish the engine assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size cylinder is this 39.47 mm piston kit intended for?\u003c\/strong\u003e\u003cbr\u003eA: This kit is engineered for a standard-bore 39.50 mm cylinder layout, maintaining stock 50cc engine displacement variables.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e The 50cc automatic engines run at extreme temperatures due to clutch stall adjustments and continuous high RPM load. When installing the piston rings onto the 39.47 mm cast body, be mindful not to over-flex the ring structure, which causes microscopic fracturing. Always align the ring end gaps perfectly with the anti-snag pins in the ring grooves before pushing the assembly into the cylinder block, and always use fresh top-end base and head seals during maintenance.\u003c\/p\u003e\n\u003ch3\u003eRecommended Pairings:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/ktm-50-sx-performance-upgrades-engine-mods-accessories-moto-house-mx\"\u003eKTM 50 SX Performance Parts \u0026amp; Upgrades\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/husqvarna-tc-50-performance-upgrades-engine-mods-accessories-moto-house-mx\"\u003eHusqvarna TC 50 Performance Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/motohousemx.com\/collections\/gas-gas-2-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eGas Gas 2-Stroke Performance Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\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\u003cstrong\u003eMoto-House MX – Choice of Champions – Clermont \/ Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Vertex","offers":[{"title":"PISTON KIT - 39.46\/STD","offer_id":39778368389203,"sku":"23429AB","price":89.15,"currency_code":"USD","in_stock":true},{"title":"Piston Kit - 39.47\/STD","offer_id":39778368421971,"sku":"23429CD","price":90.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/vertex-oe-replica-piston-2009-2022-ktm-50-sx-356120.jpg?v=1738047489","url":"https:\/\/motohousemx.com\/products\/vertex-ktm-husqvarna-gasgas-50cc-cast-replica-piston-kit-black-silver","provider":"Moto-House MX","version":"1.0","type":"link"}