{"product_id":"renthal-ren121u-428-48gpbu-rear-grooved-sprocket","title":"Renthal ren121U-428-48GPBU 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 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 required for powersports applications. Computer engineering and testing support precise fitment, concentricity, and load dispersion.\u003c\/p\u003e\u003cp\u003eThe sprocket features tooth profiling to support efficient power transfer, along with hardwearing surface treatments for added durability. This blue 428-chain sprocket has 48 teeth and is listed for the 1993–2001 Yamaha YZ80 and 1989 Suzuki RM80.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e7075 T6 aluminum construction:\u003c\/strong\u003e Provides a high-strength base material for a lightweight rear sprocket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltraLight design:\u003c\/strong\u003e The aluminum construction is stated to be 66% lighter than steel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision manufacturing:\u003c\/strong\u003e CNC machining and computer engineering support accurate fitment and concentricity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTooth profiling and surface treatment:\u003c\/strong\u003e Designed to promote power transfer and provide a hardwearing finish.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Specifications \u0026amp; Technical Data\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Renthal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e ren121U-428-48GPBU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e UltraLight rear chainwheel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7075 T6 aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain size:\u003c\/strong\u003e 428\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTooth count:\u003c\/strong\u003e 48\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/design:\u003c\/strong\u003e Grooved rear sprocket with hardwearing surface treatment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cp\u003eOne Renthal UltraLight rear grooved sprocket.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits 1993–2001 Yamaha YZ80 and 1989 Suzuki RM80 models.\u003c\/p\u003e\u003cbr\u003e\nFitments:\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\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; 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