{"product_id":"kit-piston-segments-sea-doo-300-cote-025mm-rxt-x-gtx-ltd-rxp-x-xrs-420892738","title":"Sea-Doo 300 Piston\/Rings Kit – +0.25 mm Oversize – RXT-X GTX LTD RXP-X XRS – OEM 420892738","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp style=\"text-align:justify;\"\u003eThe \u003cstrong\u003eSea-Doo 300 Piston\/Ring Kit – +0.25 mm Oversize\u003c\/strong\u003e is an aftermarket engine rebuilding solution designed for cylinders that have been bored out after wear or scoring. It replaces OEM part number \u003cstrong\u003e420892738\u003c\/strong\u003e and is compatible with high-end Sea-Doo models equipped with the \u003cstrong\u003e1630 cc 300 hp\u003c\/strong\u003e engine: RXT-X, GTX Limited, RXP-X XRS.\u003c\/p\u003e\u003cp style=\"text-align:justify;\"\u003eUnlike a standard size kit, this \u003cstrong\u003e+0.25 mm\u003c\/strong\u003e oversize kit is specifically designed for engine rebuilding after cylinder boring. It guarantees a perfect fit in a reconditioned cylinder and restores the original performance of your Sea-Doo 300.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eReplaced OEM Part Number:\u003c\/strong\u003e \u003cstrong\u003e420892738\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAssociated Part Numbers:\u003c\/strong\u003e 42091647, 420245436\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eOversize:\u003c\/strong\u003e +0.25 mm (for bored cylinder)\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\u003eContent:\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 Reserved for a qualified technician (prior boring required)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\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 cylinder reconditioning:\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003e\u003cstrong\u003eRXT-X 300\u003c\/strong\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cstrong\u003eRXT-X RS 300\u003c\/strong\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cstrong\u003eGTX Limited 300\u003c\/strong\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cstrong\u003eRXP-X 300 XRS\u003c\/strong\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003cp style=\"text-align:justify;\"\u003e\u003cem\u003e⚠️ This kit is exclusively for cylinders bored to +0.25 mm oversize. Always check your cylinder bore size and original OEM part number before ordering. Installation on an unbored cylinder will result in immediate engine failure.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eWhy Use a +0.25 mm Repair Oversize?\u003c\/h2\u003e\u003cp style=\"text-align:justify;\"\u003eDuring a thorough engine overhaul, if the cylinder shows scratches or oval wear, it is necessary to have it reconditioned (bored) by an engine specialist. After boring, the internal diameter of the cylinder is increased by 0.25 mm, making the standard piston incompatible. Symptoms that require boring and a repair oversize are:\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003eVisible scratches on the cylinder wall\u003c\/li\u003e\n\n\u003cli\u003eOval or conical cylinder wear\u003c\/li\u003e\n\n\u003cli\u003eSevere compression loss despite new rings\u003c\/li\u003e\n\n\u003cli\u003eExcessive and persistent oil consumption\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003cp style=\"text-align:justify;\"\u003eOpting for a +0.25 mm kit rather than a complete engine block replacement allows for substantial savings while restoring the original 300 hp of your Sea-Doo.\u003c\/p\u003e\u003ch2\u003eSee Also – Other Compatible Engine Parts\u003c\/h2\u003e\u003ctable width=\"100%\" cellpadding=\"10\" cellspacing=\"0\" style=\"border-collapse:collapse;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\n\u003ctd width=\"50%\" style=\"text-align:center;vertical-align:top;\"\u003e\u003ca href=\"\/en\/products\/kit-piston-sea-doo-1503-4-tec-std-wsm-010-862k-oem-420890244-420892735\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0982\/5379\/9754\/files\/S06cc441ff63540f4a0a44692376b0850E_aff35b9d-eaa2-4411-821d-477d1be95f2a.webp?v=1785441501\" alt=\"Kit Piston Sea-Doo 1503 4-TEC STD WSM\" style=\"width:100%;max-width:220px;border-radius:6px;\"\u003e\u003cbr\u003e\u003cstrong\u003eSea-Doo 1503 4-TEC STD Piston Kit\u003c\/strong\u003e\u003cbr\u003eWSM 010-862K – OEM 420890244 \/ 420892735\u003c\/a\u003e\u003c\/td\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-050mm-gtx-rxp-x-rxt-x-gtr-explorer-420892738-420916472\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0982\/5379\/9754\/files\/Sda42658a1cfd49358885fc4a64aba1dbO.webp?v=1785440580\" alt=\"Kit Piston Sea-Doo 300 Cote +0.50mm\" style=\"width:100%;max-width:220px;border-radius:6px;\"\u003e\u003cbr\u003e\u003cstrong\u003eSea-Doo 300 Piston Kit – +0.50 mm Oversize\u003c\/strong\u003e\u003cbr\u003eOEM 420892738 \/ 420916472 – GTX RXP-X RXT-X\u003c\/a\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"ROTAX tender parts","offers":[{"title":"1 complete kit +0.25mm","offer_id":62837868724554,"sku":"14:771","price":289.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/5379\/9754\/files\/S03a51db7a33245b4be19858797e10c50O.webp?v=1785440270","url":"https:\/\/rotaxtenderparts.com\/en\/products\/kit-piston-segments-sea-doo-300-cote-025mm-rxt-x-gtx-ltd-rxp-x-xrs-420892738","provider":"ROTAX tender parts","version":"1.0","type":"link"}