{"product_id":"kit-piston-segments-sea-doo-300-cote-050mm-gtx-rxp-x-rxt-x-gtr-explorer-420892738-420916472","title":"Piston\/Ring Kit Sea-Doo 300 – +0.50 mm Oversize – GTX RXP-X RXT-X GTR Explorer – OEM 420892738 \/ 420916472","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp style=\"text-align: justify;\"\u003eThe \u003cstrong\u003eSea-Doo 300 Piston\/Ring Kit – +0.50 mm Oversize\u003c\/strong\u003e is a high-precision engine rebuild part, designed for cylinders that have undergone a second boring after advanced wear. It replaces OEM references \u003cstrong\u003e420892738\u003c\/strong\u003e and \u003cstrong\u003e420916472\u003c\/strong\u003e and is compatible with all Sea-Doo models equipped with the \u003cstrong\u003e1630 cc 300 hp\u003c\/strong\u003e engine produced between 2016 and 2024: GTX, RXP-X, RXT-X, GTR, and Explorer.\u003c\/p\u003e\n\u003cp style=\"text-align: justify;\"\u003eThis \u003cstrong\u003e+0.50 mm\u003c\/strong\u003e oversize kit is used when the cylinder has already been bored once to +0.25 mm and again shows wear requiring a second boring. It guarantees a perfect fit and optimal sealing to restore the original 300 hp.\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eReplaced OEM References:\u003c\/strong\u003e \u003cstrong\u003e420892738\u003c\/strong\u003e, \u003cstrong\u003e420916472\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAssociated References:\u003c\/strong\u003e 42091647, 420245436\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eOversize:\u003c\/strong\u003e +0.50 mm (for cylinder rebored to 2nd oversize)\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eEngine Application:\u003c\/strong\u003e Sea-Doo 300 hp (1630 cc)\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eContents:\u003c\/strong\u003e Complete piston + ring kit (as illustrated)\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eType:\u003c\/strong\u003e Aftermarket SBT – OEM replacement\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.715 kg\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eRegulated Substances:\u003c\/strong\u003e None\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Restricted to qualified technician (prior boring required)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp style=\"text-align: justify;\"\u003eCompatible with Sea-Doo models equipped with the \u003cstrong\u003e300 hp (1630 cc)\u003c\/strong\u003e engine that have undergone a +0.50 mm oversize bore:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eGTX 300 \/ GTX LTD 300\u003c\/strong\u003e – 2016 to 2024\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eRXP-X 300 \/ RXP-X XRS 300\u003c\/strong\u003e – 2016 to 2022\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eRXT-X 300 \/ RXT XRS 300\u003c\/strong\u003e – 2016 to 2022\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eRXP 300\u003c\/strong\u003e – 2018 to 2022\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eRXT 300\u003c\/strong\u003e – 2019 to 2020\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eGTR 300\u003c\/strong\u003e – 2024\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eExplorer 300\u003c\/strong\u003e – 2024\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp style=\"text-align: justify;\"\u003e\u003cem\u003e⚠️ This kit is exclusively for cylinders rebored to +0.50 mm oversize. It is imperative to check your cylinder's bore size before ordering. Installation on a non-rebored cylinder or one with a different size would lead to immediate engine failure.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eWhy Choose +0.50 mm Oversize?\u003c\/h2\u003e\n\u003cp style=\"text-align: justify;\"\u003eThe +0.50 mm oversize is the second repair size available for the Sea-Doo 300 engine. It is used when the cylinder has already been bored once to +0.25 mm and again shows signs of wear. Typical situations justifying this choice are:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eCylinder already rebored to +0.25 mm with recurring wear\u003c\/li\u003e\n\n\u003cli\u003eDeep scratches requiring a larger bore\u003c\/li\u003e\n\n\u003cli\u003eOut-of-roundness or taper exceeding +0.25 mm tolerances\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp style=\"text-align: justify;\"\u003eChoosing the correct repair size is essential to ensure the lifespan of the rebuilt engine. If in doubt, have your cylinder measured by an engine builder before ordering.\u003c\/p\u003e\n\u003ch2\u003eSee Also – +0.25mm kit or 3-Cylinder kits\u003c\/h2\u003e\n\u003ctable width=\"100%\" cellpadding=\"10\" cellspacing=\"0\" style=\"border-collapse: collapse;\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd width=\"50%\" style=\"text-align: center; vertical-align: top;\"\u003e\u003ca href=\"\/en\/products\/kit-piston-segments-sea-doo-300-cote-025mm-rxt-x-gtx-ltd-rxp-x-xrs-420892738\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0982\/5379\/9754\/files\/S03a51db7a33245b4be19858797e10c50O.webp?v=1785440270\" alt=\"Sea-Doo 300 Piston Kit +0.25mm Oversize\" style=\"width: 100%; max-width: 220px; border-radius: 6px;\"\u003e\u003cbr\u003e\u003cstrong\u003eSea-Doo 300 Piston Kit – +0.25 mm Oversize\u003c\/strong\u003e\u003cbr\u003eOEM 420892738 – RXT-X GTX LTD RXP-X XRS\u003c\/a\u003e\u003c\/td\u003e\n\n\u003ctd width=\"50%\" style=\"text-align: center; vertical-align: top;\"\u003e\u003ca href=\"\/en\/products\/kit-segments-piston-sea-doo-4-tec-std-3-pieces-gtx-rxp-rxt-gtr-215-255-260\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0982\/5379\/9754\/files\/Sd470efcb391a4613ac0a2aa41b52952cC.webp?v=1785442058\" alt=\"Sea-Doo 4-TEC STD 3-Piece Piston Ring Kit\" style=\"width: 100%; max-width: 220px; border-radius: 6px;\"\u003e\u003cbr\u003e\u003cstrong\u003eSea-Doo 4-TEC STD Piston Ring Kit – 3-Piece\u003c\/strong\u003e\u003cbr\u003eGTX \/ RXP \/ RXT \/ GTR – 215\/255\/260 hp\u003c\/a\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e","brand":"ROTAX tender parts","offers":[{"title":"Complete Kit +0.5mm","offer_id":62837868822858,"sku":"14:771","price":289.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/5379\/9754\/files\/Sda42658a1cfd49358885fc4a64aba1dbO.webp?v=1785440580","url":"https:\/\/rotaxtenderparts.com\/en\/products\/kit-piston-segments-sea-doo-300-cote-050mm-gtx-rxp-x-rxt-x-gtr-explorer-420892738-420916472","provider":"ROTAX tender parts","version":"1.0","type":"link"}