{"product_id":"cometic-c3765-top-end-gasket-kit-for-beta-250-rr-and-300-rr-xtrainer","title":"Cometic C3765 Top End Gasket Kit for Beta 250 RR and 300 RR\/Xtrainer","description":"\u003cp\u003eThe Cometic C3765 Top End Kit is designed for dependable engine rebuilding and improved low-end performance on compatible Beta two-stroke motorcycles. This gasket kit raises compression to help deliver stronger low-end power while supporting a reliable seal across the cylinder, head, and related top-end components. It is an appropriate replacement solution for riders and technicians servicing a Beta 250 RR, Beta 300 RR, or Beta 300 Xtrainer.\u003c\/p\u003e\u003cp\u003eThe kit combines Cometic gasket technology with materials selected for sealing performance, flexibility, and torque retention. Graphite gaskets feature a steel core laminated on both sides with flexible graphite, helping maintain a consistent seal under engine heat and pressure. Fiber gaskets are designed for maximum sealing capability, flexibility, and torque retention, while the included O-ring gaskets meet or exceed OEM specifications for dependable fit and service performance.\u003c\/p\u003e\u003cp\u003eFitment includes the 2013–2017 Beta 250 RR (2T), the 2013–2014 Beta 300 RR (2T), and the 2015–2017 Beta 300 Xtrainer. Verify the motorcycle model, year, and engine configuration before installation. Manufactured by Cometic and identified by manufacturer and vendor part number C3765, this top end kit is intended to provide the properly matched gasket components needed for a professional engine service.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompression Improvement: Raises compression to support better low-end power.\u003c\/li\u003e\n\u003cli\u003eGraphite Gaskets: Feature a steel core laminated on both sides with flexible graphite.\u003c\/li\u003e\n\u003cli\u003eFiber Gaskets: Designed for maximum seal performance, flexibility, and torque retention.\u003c\/li\u003e\n\u003cli\u003eO-Ring Gaskets: Meet or exceed OEM specifications for reliable sealing.\u003c\/li\u003e\n\u003cli\u003eFitment: Fits 2013–2017 Beta 250 RR (2T), 2013–2014 Beta 300 RR (2T), and 2015–2017 Beta 300 Xtrainer.\u003c\/li\u003e\n\u003cli\u003eBrand: Cometic.\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: C3765.\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: C3765.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2013 Beta 250 RR (2T)\u003cbr\u003e\n2013 Beta 300 RR (2t)\u003cbr\u003e\n2014 Beta 250 RR (2T)\u003cbr\u003e\n2014 Beta 300 RR (2t)\u003cbr\u003e\n2015 Beta 250 RR (2T)\u003cbr\u003e\n2015 Beta 300 RR (2t)\u003cbr\u003e\n2015 Beta 300 Xtrainer\u003cbr\u003e\n2016 Beta 250 RR (2T)\u003cbr\u003e\n2016 Beta 300 RR (2t)\u003cbr\u003e\n2016 Beta 300 Xtrainer\u003cbr\u003e\n2017 Beta 250 RR (2T)\u003cbr\u003e\n2017 Beta 300 RR (2t)\u003cbr\u003e\n2017 Beta 300 Xtrainer\u003cbr\u003e\n2018 Beta 250 RR (2T)\u003cbr\u003e\n2018 Beta 300 RR (2t)\u003cbr\u003e\n2018 Beta 300 Xtrainer\u003cbr\u003e\n2019 Beta 250 RR (2T)\u003cbr\u003e\n2019 Beta 300 RR (2t)\u003cbr\u003e\n2019 Beta 300 Xtrainer\u003cbr\u003e\n2020 Beta 250 RR (2T)\u003cbr\u003e\n2020 Beta 300 RR (2t)\u003cbr\u003e\n2020 Beta 300 Xtrainer\u003cbr\u003e\n2021 Beta 250 RR (2T)\u003cbr\u003e\n2021 Beta 300 RR (2t)\u003cbr\u003e\n2021 Beta 300 Xtrainer","brand":"COMETIC","offers":[{"title":"Default Title","offer_id":67551565840619,"sku":"68-3765","price":73.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/3e12-60ac057c83cb4.jpg?v=1790718685","url":"https:\/\/ctracingservices.com\/products\/cometic-c3765-top-end-gasket-kit-for-beta-250-rr-and-300-rr-xtrainer","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}