{"product_id":"renthal-420-51p-189u-420-51grsi-rear-chainwheel-for-honda-cr80r-and-crf150r","title":"Renthal 420-51P 189U-420-51GRSI Rear Chainwheel for Honda CR80R and CRF150R","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 189U-420-51GRSI UltraLight Rear Chainwheel is a CNC-machined aluminum sprocket designed for powersports applications. Manufactured from 7075 T6 aluminum, it is engineered for precise fitment, concentricity, and load dispersion. Its grooved design and silver finish provide a functional replacement option for compatible Honda motorcycles.\u003c\/p\u003e\u003cp\u003eComputer engineering and testing support accurate manufacturing, while the tooth profile is designed to promote effective power transfer. Renthal states that this aluminum rear sprocket is 66% lighter than steel, helping reduce unsprung weight compared with a steel sprocket. A hardwearing surface treatment and high-strength base material support durability in demanding riding conditions.\u003c\/p\u003e\u003cp\u003eThis chainwheel fits 2007, 2008, 2009, and 2012–2015 Honda CRF150R models, as well as 1986–1988 Honda CR80R models. Manufacturer part number: 189U-420-51GRSI. Vendor part number: 189U-420-51GRSI.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Renthal\u003c\/li\u003e\n\u003cli\u003eModel: 420-51P\u003c\/li\u003e\n\u003cli\u003ePart Number: 189U-420-51GRSI\u003c\/li\u003e\n\u003cli\u003eConstruction: CNC machined from 7075 T6 aluminum\u003c\/li\u003e\n\u003cli\u003eWeight Reduction: Renthal states the sprocket is 66% lighter than steel\u003c\/li\u003e\n\u003cli\u003eDesign: Grooved rear chainwheel with a silver finish\u003c\/li\u003e\n\u003cli\u003eTooth Profile: Designed to provide effective power transfer\u003c\/li\u003e\n\u003cli\u003eManufacturing: Computer engineered and tested for precise fitment, concentricity, and load dispersion\u003c\/li\u003e\n\u003cli\u003eFitment: 2007, 2008, 2009, and 2012–2015 Honda CRF150R; 1986–1988 Honda CR80R\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\nRegular Stock: t\u003cbr\u003e\nUnits Per Sku: 1\u003cbr\u003e\nFitment:\u003cbr\u003e\n1986 Honda CR80R Base\u003cbr\u003e\n1987 Honda CR80R Base\u003cbr\u003e\n1988 Honda CR80R Base\u003cbr\u003e\n1989 Honda CR80R Base\u003cbr\u003e\n1990 Honda CR80R Base\u003cbr\u003e\n1991 Honda CR80R Base\u003cbr\u003e\n1992 Honda CR80R Base\u003cbr\u003e\n1993 Honda CR80R Base\u003cbr\u003e\n1994 Honda CR80R Base\u003cbr\u003e\n1995 Honda CR80R Base\u003cbr\u003e\n1996 Honda CR80R Base\u003cbr\u003e\n1996 Honda CR80RB Expert Base\u003cbr\u003e\n1997 Honda CR80R Base\u003cbr\u003e\n1997 Honda CR80RB Expert Base\u003cbr\u003e\n1998 Honda CR80R Base\u003cbr\u003e\n1998 Honda CR80RB Expert Base\u003cbr\u003e\n1999 Honda CR80R Base\u003cbr\u003e\n1999 Honda CR80RB Expert Base\u003cbr\u003e\n2000 Honda CR80R Base\u003cbr\u003e\n2000 Honda CR80RB Expert Base\u003cbr\u003e\n2001 Honda CR80R Base\u003cbr\u003e\n2001 Honda CR80RB Expert Base\u003cbr\u003e\n2002 Honda CR80R Base\u003cbr\u003e\n2002 Honda CR80RB Expert Base\u003cbr\u003e\n2003 Honda CR85R Base\u003cbr\u003e\n2003 Honda CR85RB Expert Base\u003cbr\u003e\n2004 Honda CR85R Base\u003cbr\u003e\n2004 Honda CR85RB Expert Base\u003cbr\u003e\n2005 Honda CR85R Base\u003cbr\u003e\n2005 Honda CR85RB Expert Base\u003cbr\u003e\n2006 Honda CR85R Base\u003cbr\u003e\n2006 Honda CR85RB Expert Base\u003cbr\u003e\n2007 Honda CR85R Base\u003cbr\u003e\n2007 Honda CR85RB Expert Base\u003cbr\u003e\n2007 Honda CRF150R Base\u003cbr\u003e\n2008 Honda CRF150R Base\u003cbr\u003e\n2009 Honda CRF150R Base\u003cbr\u003e\n2012 Honda CRF150R Base\u003cbr\u003e\n2013 Honda CRF150R Base\u003cbr\u003e\n2014 Honda CRF150R Base\u003cbr\u003e\n2015 Honda CRF150R Base\u003cbr\u003e\n2016 Honda CRF150R Base\u003cbr\u003e\n2017 Honda CRF150R Base\u003cbr\u003e\n2018 Honda CRF150R Base\u003cbr\u003e\n2019 Honda CRF150R Base\u003cbr\u003e\n2020 Honda CRF150R Base\u003cbr\u003e\n2021 Honda CRF150R Base","brand":"Renthal","offers":[{"title":"Default Title","offer_id":68303807217899,"sku":"596865","price":94.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/7805a97f0bbb744bb1ab2789ff2d804e_b038818a-f473-41b5-bc16-bed4b462bc5d.jpg?v=1793257210","url":"https:\/\/ctracingservices.com\/products\/renthal-420-51p-189u-420-51grsi-rear-chainwheel-for-honda-cr80r-and-crf150r","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}