{"product_id":"renthal-121u-428-48gpbu-428-48t-blue-rear-grooved-sprocket","title":"Renthal 121U-428-48GPBU 428-48T Blue Rear Grooved Sprocket","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-428-48GPBU UltraLight rear chainwheel is a CNC-machined powersports sprocket made from 7075 T6 aluminum. Its lightweight construction is designed to reduce weight compared with steel while maintaining the strength required for demanding motorcycle applications.\u003c\/p\u003e\u003cp\u003eComputer engineering and testing support precise fitment, concentricity, and load dispersion. The sprocket features tooth profiling intended to provide efficient power transfer, while its hardwearing surface treatment helps support long-term performance. This rear grooved sprocket is finished in blue and uses a 428 chain size with 48 teeth.\u003c\/p\u003e\u003cp\u003eManufacturer part number: 121U-428-48GPBU. Vendor part number: 121U-428-48GPBU. Fitment includes 1993–2001 Yamaha YZ80 models and the 1989 Suzuki RM80.\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: 428\u003c\/li\u003e\n\u003cli\u003eTooth count: 48 teeth\u003c\/li\u003e\n\u003cli\u003eFinish: Blue\u003c\/li\u003e\n\u003cli\u003eDesign: Rear grooved sprocket with computer-engineered tooth profiling\u003c\/li\u003e\n\u003cli\u003ePerformance: Designed for precise fitment, concentricity, load dispersion, and power transfer\u003c\/li\u003e\n\u003cli\u003eFitment: 1993–2001 Yamaha YZ80 and 1989 Suzuki RM80\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 121U-428-48GPBU\u003c\/li\u003e\n\u003cli\u003eVendor part number: 121U-428-48GPBU\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\n1989 Suzuki RM80 Base\u003cbr\u003e\n1990 Suzuki RM80 Base\u003cbr\u003e\n1991 Suzuki RM80 Base\u003cbr\u003e\n1992 Suzuki RM80 Base\u003cbr\u003e\n1993 Suzuki RM80 Base\u003cbr\u003e\n1993 Yamaha YZ80 Base\u003cbr\u003e\n1994 Suzuki RM80 Base\u003cbr\u003e\n1994 Yamaha YZ80 Base\u003cbr\u003e\n1995 Suzuki RM80 Base\u003cbr\u003e\n1995 Yamaha YZ80 Base\u003cbr\u003e\n1996 Suzuki RM80 Base\u003cbr\u003e\n1996 Yamaha YZ80 Base\u003cbr\u003e\n1997 Suzuki RM80 Base\u003cbr\u003e\n1997 Yamaha YZ80 Base\u003cbr\u003e\n1998 Suzuki RM80 Base\u003cbr\u003e\n1998 Yamaha YZ80 Base\u003cbr\u003e\n1999 Suzuki RM80 Base\u003cbr\u003e\n1999 Yamaha YZ80 Base\u003cbr\u003e\n2000 Suzuki RM80 Base\u003cbr\u003e\n2000 Yamaha YZ80 Base\u003cbr\u003e\n2001 Suzuki RM80 Base\u003cbr\u003e\n2001 Yamaha YZ80 Base\u003cbr\u003e\n2002 Suzuki RM85 Base\u003cbr\u003e\n2002 Yamaha YZ85 Base\u003cbr\u003e\n2003 Suzuki RM85 Base\u003cbr\u003e\n2003 Suzuki RM85L Base\u003cbr\u003e\n2003 Yamaha YZ85 Base\u003cbr\u003e\n2004 Suzuki RM85 Base\u003cbr\u003e\n2004 Suzuki RM85L Base\u003cbr\u003e\n2004 Yamaha YZ85 Base\u003cbr\u003e\n2005 Suzuki RM85 Base\u003cbr\u003e\n2005 Suzuki RM85L Base\u003cbr\u003e\n2005 Yamaha YZ85 Base\u003cbr\u003e\n2006 Suzuki RM85 Base\u003cbr\u003e\n2006 Suzuki RM85L Base\u003cbr\u003e\n2006 Yamaha YZ85 Base\u003cbr\u003e\n2007 Suzuki RM85 Base\u003cbr\u003e\n2007 Suzuki RM85L Base\u003cbr\u003e\n2007 Yamaha YZ85 Base\u003cbr\u003e\n2008 Suzuki RM85 Base\u003cbr\u003e\n2008 Suzuki RM85L Base\u003cbr\u003e\n2008 Yamaha YZ85 Base\u003cbr\u003e\n2009 Suzuki RM85 Base\u003cbr\u003e\n2009 Yamaha YZ85 Base\u003cbr\u003e\n2010 Yamaha YZ85 Base\u003cbr\u003e\n2011 Yamaha YZ85 Base\u003cbr\u003e\n2012 Suzuki RM85 Base\u003cbr\u003e\n2012 Suzuki RM85L Base\u003cbr\u003e\n2012 Yamaha YZ85 Base\u003cbr\u003e\n2013 Yamaha YZ85 Base\u003cbr\u003e\n2014 Yamaha YZ85 Base\u003cbr\u003e\n2015 Suzuki RM85 Base\u003cbr\u003e\n2015 Yamaha YZ85 Base\u003cbr\u003e\n2016 Suzuki RM85 Base\u003cbr\u003e\n2016 Yamaha YZ85 Base\u003cbr\u003e\n2017 Suzuki RM85 Base\u003cbr\u003e\n2017 Yamaha YZ85 Base\u003cbr\u003e\n2018 Suzuki RM85 Base\u003cbr\u003e\n2018 Yamaha YZ85 Base\u003cbr\u003e\n2019 Suzuki RM85 Base\u003cbr\u003e\n2019 Yamaha YZ85 Base\u003cbr\u003e\n2020 Suzuki RM85 Base\u003cbr\u003e\n2020 Yamaha YZ85 Base\u003cbr\u003e\n2021 Suzuki RM85 Base\u003cbr\u003e\n2021 Yamaha YZ85 Base","brand":"Renthal","offers":[{"title":"Default Title","offer_id":68304595779819,"sku":"596996","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/c9593a231f7f1432e2bce3a78fdaffbc_c7e78865-4c96-49e0-b142-69f696560ab6.jpg?v=1793260082","url":"https:\/\/ctracingservices.com\/products\/renthal-121u-428-48gpbu-428-48t-blue-rear-grooved-sprocket","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}