{"product_id":"renthal-420-54p-rear-sprocket-model-189u-420-54grsi-part-number-189u-420-54grsi","title":"Renthal 420-54P Rear Sprocket, Model 189U-420-54GRSI, Part Number 189U-420-54GRSI","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 UltraLight Rear Chainwheel is a CNC-machined rear sprocket made from 7075 T6 aluminum. Its lightweight aluminum construction is designed to reduce weight compared with steel while maintaining the strength needed for powersports applications. The sprocket features precise manufacturing tolerances, computer-engineered tooth profiling, and a design intended to support concentricity, load dispersion, and efficient power transfer.\u003c\/p\u003e\u003cp\u003eFinished in silver, this 54-tooth rear sprocket uses Renthal’s hardwearing surface treatment for durability. The Renthal 189U-420-54GRSI is listed for fitment on select Honda CRF150R model years from 2007 through 2015 and Honda CR80R model years from 1986 through 1988. Verify the motorcycle model and year before installation.\u003c\/p\u003e\u003cp\u003eManufacturer part number: 189U-420-54GRSI. Vendor part number: 189U-420-54GRSI.\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: 189U-420-54GRSI\u003c\/li\u003e\n\u003cli\u003ePart Number: 189U-420-54GRSI\u003c\/li\u003e\n\u003cli\u003eSprocket Type: UltraLight rear chainwheel\u003c\/li\u003e\n\u003cli\u003eMaterial: CNC-machined 7075 T6 aluminum\u003c\/li\u003e\n\u003cli\u003eTooth Count: 54 teeth\u003c\/li\u003e\n\u003cli\u003eChain Size: 420\u003c\/li\u003e\n\u003cli\u003eFinish: Silver\u003c\/li\u003e\n\u003cli\u003eDesign: Computer-engineered tooth profiling for power transfer\u003c\/li\u003e\n\u003cli\u003eFitment: 2007–2015 Honda CRF150R and 1986–1988 Honda CR80R model years as listed\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":68304762798315,"sku":"706218","price":94.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/7805a97f0bbb744bb1ab2789ff2d804e_1250fa92-63c5-4141-a5d3-3583ca083f79.jpg?v=1793261180","url":"https:\/\/ctracingservices.com\/products\/renthal-420-54p-rear-sprocket-model-189u-420-54grsi-part-number-189u-420-54grsi","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}