{"product_id":"renthal-420-47p-121u-420-47gbsi-rear-sprocket-for-yamaha-yz65","title":"Renthal 420-47P 121U-420-47GBSI Rear Sprocket for Yamaha YZ65","description":"Renthal UltraLight Rear Chainwheels are CNC machined from 7075 T6 aluminum to extremely tight tolerances, 66% lighter than steel. Computer engineered and tested to ensure a precise fitment, concentricity and load dispersion with tooth profiling to provide maximum power transfer.  A combination of high strength base material, cutting edge manufacturing methods and exceptional hardwearing surface treatments its clear to see why Renthal's light weight all aluminum rear sprockets can be found on the rear wheels of many factory race team machines.\n\u003cp\u003eThe Renthal 121U-420-47GBSI UltraLight rear sprocket is a CNC-machined aluminum replacement designed for select Yamaha YZ65 applications. It features a 420 chain size and 47-tooth configuration, with a silver finish and grooved design.\u003c\/p\u003e\u003cp\u003eManufactured from 7075 T6 aluminum, this rear sprocket is engineered for reduced weight compared with steel while maintaining strength for powersports use. Renthal uses computer engineering and testing to support precise fitment, concentricity, load dispersion, and efficient power transfer. Tooth profiling is designed to help provide consistent chain engagement.\u003c\/p\u003e\u003cp\u003eThis Renthal rear sprocket fits the 2018, 2019, 2020, and 2021 Yamaha YZ65. The manufacturer part number is 121U-420-47GBSI, and the vendor part number is 121U-420-47GBSI. Verify the model year and existing chain specification before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Renthal\u003c\/li\u003e\n\u003cli\u003eProduct type: UltraLight rear chainwheel\u003c\/li\u003e\n\u003cli\u003eMaterial: CNC-machined 7075 T6 aluminum\u003c\/li\u003e\n\u003cli\u003eChain size: 420\u003c\/li\u003e\n\u003cli\u003eTooth count: 47\u003c\/li\u003e\n\u003cli\u003eFinish: Silver\u003c\/li\u003e\n\u003cli\u003eDesign: Rear grooved sprocket\u003c\/li\u003e\n\u003cli\u003eFitment: 2018 Yamaha YZ65\u003c\/li\u003e\n\u003cli\u003eFitment: 2019 Yamaha YZ65\u003c\/li\u003e\n\u003cli\u003eFitment: 2020 Yamaha YZ65\u003c\/li\u003e\n\u003cli\u003eFitment: 2021 Yamaha YZ65\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 121U-420-47GBSI\u003c\/li\u003e\n\u003cli\u003eVendor part number: 121U-420-47GBSI\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nAir Freight Prohibited: false\u003cbr\u003e\nNot Carb Approved: false\u003cbr\u003e\nLtl Freight Required: false\u003cbr\u003e\nProp 65: Unknown\u003cbr\u003e\nPart Type: powersports\u003cbr\u003e\nEpa: N\/A\u003cbr\u003e\nCarb Acknowledgement Required: false\u003cbr\u003e\nClearance Item: t\u003cbr\u003e\nRegular Stock: false\u003cbr\u003e\nUnits Per Sku: 1\u003cbr\u003e\nFitment:\u003cbr\u003e\n2018 Yamaha YZ65 Base\u003cbr\u003e\n2019 Yamaha YZ65 Base\u003cbr\u003e\n2020 Yamaha YZ65 Base\u003cbr\u003e\n2021 Yamaha YZ65 Base","brand":"Renthal","offers":[{"title":"Default Title","offer_id":68304617472235,"sku":"597001","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/7805a97f0bbb744bb1ab2789ff2d804e_c368e54c-8815-4047-a37b-71c1dcbf3ed4.jpg?v=1793260204","url":"https:\/\/ctracingservices.com\/products\/renthal-420-47p-121u-420-47gbsi-rear-sprocket-for-yamaha-yz65","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}