{"product_id":"renthal-150u-520-51gbbu-520-51t-rear-chainwheel","title":"Renthal 150U-520-51GBBU 520-51T Rear Chainwheel","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 CNC machined from 7075 T6 aluminum to tight tolerances and engineered for precise fitment, concentricity, and load dispersion. Its lightweight aluminum construction is designed to reduce weight compared with steel while supporting effective power transfer through the drivetrain.\u003c\/p\u003e\u003cp\u003eTooth profiling helps provide maximum power transfer, while the high-strength base material, advanced manufacturing methods, and hardwearing surface treatment support durability in powersports applications. This rear chainwheel is listed for the 1988–1995 Honda XR250R, 2009 Yamaha WR250F, and 2009 Yamaha WR450F. Manufacturer part number: 150U-520-51GBBU. Vendor part number: 150U-520-51GBBU.\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: UltraLight Rear Chainwheel\u003c\/li\u003e\n\u003cli\u003eSize: 520 chain size with 51 teeth\u003c\/li\u003e\n\u003cli\u003eMaterial: CNC-machined 7075 T6 aluminum\u003c\/li\u003e\n\u003cli\u003eDesign: Computer engineered and tested for precise fitment, concentricity, and load dispersion\u003c\/li\u003e\n\u003cli\u003eTooth profile: Designed to provide maximum power transfer\u003c\/li\u003e\n\u003cli\u003eFinish: Blue\u003c\/li\u003e\n\u003cli\u003eFitment: 1988–1995 Honda XR250R, 2009 Yamaha WR250F, and 2009 Yamaha WR450F\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 150U-520-51GBBU\u003c\/li\u003e\n\u003cli\u003eVendor part number: 150U-520-51GBBU\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\n1988 Honda XR250R Base\u003cbr\u003e\n1989 Honda XR250R Base\u003cbr\u003e\n1990 Honda XR250R Base\u003cbr\u003e\n1991 Honda XR250R Base\u003cbr\u003e\n1992 Honda XR250R Base\u003cbr\u003e\n1993 Honda XR250R Base\u003cbr\u003e\n1994 Honda XR250R Base\u003cbr\u003e\n1995 Honda XR250R Base\u003cbr\u003e\n1999 Yamaha WR400F Base\u003cbr\u003e\n1999 Yamaha YZ125 Base\u003cbr\u003e\n1999 Yamaha YZ250 Base\u003cbr\u003e\n1999 Yamaha YZ400F Base\u003cbr\u003e\n2000 Yamaha WR400F Base\u003cbr\u003e\n2000 Yamaha YZ125 Base\u003cbr\u003e\n2000 Yamaha YZ250 Base\u003cbr\u003e\n2000 Yamaha YZ426F Base\u003cbr\u003e\n2001 Yamaha WR250F Base\u003cbr\u003e\n2001 Yamaha WR426F Base\u003cbr\u003e\n2001 Yamaha YZ125 Base\u003cbr\u003e\n2001 Yamaha YZ250 Base\u003cbr\u003e\n2001 Yamaha YZ250F Base\u003cbr\u003e\n2001 Yamaha YZ426F Base\u003cbr\u003e\n2002 Yamaha WR250F Base\u003cbr\u003e\n2002 Yamaha WR426F Base\u003cbr\u003e\n2002 Yamaha YZ125 Base\u003cbr\u003e\n2002 Yamaha YZ250 Base\u003cbr\u003e\n2002 Yamaha YZ250F Base\u003cbr\u003e\n2002 Yamaha YZ426F Base\u003cbr\u003e\n2003 Yamaha WR250F Base\u003cbr\u003e\n2003 Yamaha WR450F Base\u003cbr\u003e\n2003 Yamaha YZ125 Base\u003cbr\u003e\n2003 Yamaha YZ250 Base\u003cbr\u003e\n2003 Yamaha YZ250F Base\u003cbr\u003e\n2003 Yamaha YZ450F Base\u003cbr\u003e\n2004 Yamaha WR250F Base\u003cbr\u003e\n2004 Yamaha WR450F Base\u003cbr\u003e\n2004 Yamaha YZ125 Base\u003cbr\u003e\n2004 Yamaha YZ250 Base\u003cbr\u003e\n2004 Yamaha YZ250F Base\u003cbr\u003e\n2004 Yamaha YZ450F Base\u003cbr\u003e\n2005 Yamaha WR250F Base\u003cbr\u003e\n2005 Yamaha WR450F Base\u003cbr\u003e\n2005 Yamaha YZ125 Base\u003cbr\u003e\n2005 Yamaha YZ250 Base\u003cbr\u003e\n2005 Yamaha YZ250F Base\u003cbr\u003e\n2005 Yamaha YZ450F Base\u003cbr\u003e\n2006 Yamaha WR250F Base\u003cbr\u003e\n2006 Yamaha WR450F Base\u003cbr\u003e\n2006 Yamaha YZ125 Base\u003cbr\u003e\n2006 Yamaha YZ250 Base\u003cbr\u003e\n2006 Yamaha YZ250F Base\u003cbr\u003e\n2006 Yamaha YZ450F Base\u003cbr\u003e\n2007 Yamaha WR250F Base\u003cbr\u003e\n2007 Yamaha WR450F Base\u003cbr\u003e\n2007 Yamaha YZ125 Base\u003cbr\u003e\n2007 Yamaha YZ250 Base\u003cbr\u003e\n2007 Yamaha YZ250F Base\u003cbr\u003e\n2007 Yamaha YZ450F Base\u003cbr\u003e\n2008 Yamaha WR250F Base\u003cbr\u003e\n2008 Yamaha WR450F Base\u003cbr\u003e\n2008 Yamaha YZ125 Base\u003cbr\u003e\n2008 Yamaha YZ250 Base\u003cbr\u003e\n2008 Yamaha YZ250F Base\u003cbr\u003e\n2008 Yamaha YZ450F Base\u003cbr\u003e\n2009 Yamaha WR250F Base\u003cbr\u003e\n2009 Yamaha WR450F Base\u003cbr\u003e\n2009 Yamaha YZ125 Base\u003cbr\u003e\n2009 Yamaha YZ250 Base\u003cbr\u003e\n2009 Yamaha YZ250F Base\u003cbr\u003e\n2009 Yamaha YZ450F Base\u003cbr\u003e\n2010 Yamaha WR250F Base\u003cbr\u003e\n2010 Yamaha WR450F Base\u003cbr\u003e\n2010 Yamaha YZ125 Base\u003cbr\u003e\n2010 Yamaha YZ250 Base\u003cbr\u003e\n2010 Yamaha YZ250F Base\u003cbr\u003e\n2010 Yamaha YZ450F Base\u003cbr\u003e\n2011 Yamaha WR250F Base\u003cbr\u003e\n2011 Yamaha WR450F Base\u003cbr\u003e\n2011 Yamaha YZ125 Base\u003cbr\u003e\n2011 Yamaha YZ250 Base\u003cbr\u003e\n2011 Yamaha YZ250F Base\u003cbr\u003e\n2011 Yamaha YZ450F Base\u003cbr\u003e\n2012 Yamaha WR250F Base\u003cbr\u003e\n2012 Yamaha WR450F Base\u003cbr\u003e\n2012 Yamaha YZ125 Base\u003cbr\u003e\n2012 Yamaha YZ250 Base\u003cbr\u003e\n2012 Yamaha YZ250F Base\u003cbr\u003e\n2012 Yamaha YZ450F Base\u003cbr\u003e\n2013 Yamaha WR250F Base\u003cbr\u003e\n2013 Yamaha WR450F Base\u003cbr\u003e\n2013 Yamaha YZ125 Base\u003cbr\u003e\n2013 Yamaha YZ250 Base\u003cbr\u003e\n2013 Yamaha YZ250F Base\u003cbr\u003e\n2013 Yamaha YZ450F Base\u003cbr\u003e\n2014 Yamaha WR250F Base\u003cbr\u003e\n2014 Yamaha WR450F Base\u003cbr\u003e\n2014 Yamaha YZ125 Base\u003cbr\u003e\n2014 Yamaha YZ250 Base\u003cbr\u003e\n2014 Yamaha YZ250F Base\u003cbr\u003e\n2014 Yamaha YZ450F Base\u003cbr\u003e\n2015 Yamaha WR250F Base\u003cbr\u003e\n2015 Yamaha WR450F Base\u003cbr\u003e\n2015 Yamaha YZ125 Base\u003cbr\u003e\n2015 Yamaha YZ250 Base\u003cbr\u003e\n2015 Yamaha YZ250F Base\u003cbr\u003e\n2015 Yamaha YZ250FX Base\u003cbr\u003e\n2015 Yamaha YZ450F Base\u003cbr\u003e\n2016 Yamaha WR250F Base\u003cbr\u003e\n2016 Yamaha WR450F Base\u003cbr\u003e\n2016 Yamaha YZ125 Base\u003cbr\u003e\n2016 Yamaha YZ250 Base\u003cbr\u003e\n2016 Yamaha YZ250F Base\u003cbr\u003e\n2016 Yamaha YZ250FX Base\u003cbr\u003e\n2016 Yamaha YZ250X Base\u003cbr\u003e\n2016 Yamaha YZ450F Base\u003cbr\u003e\n2016 Yamaha YZ450FX Base\u003cbr\u003e\n2017 Yamaha WR250F Base\u003cbr\u003e\n2017 Yamaha WR450F Base\u003cbr\u003e\n2017 Yamaha YZ125 Base\u003cbr\u003e\n2017 Yamaha YZ250 Base\u003cbr\u003e\n2017 Yamaha YZ250F Base\u003cbr\u003e\n2017 Yamaha YZ250FX Base\u003cbr\u003e\n2017 Yamaha YZ250X Base\u003cbr\u003e\n2017 Yamaha YZ450F Base\u003cbr\u003e\n2017 Yamaha YZ450FX Base\u003cbr\u003e\n2018 Yamaha WR250F Base\u003cbr\u003e\n2018 Yamaha WR450F Base\u003cbr\u003e\n2018 Yamaha YZ125 Base\u003cbr\u003e\n2018 Yamaha YZ250 Base\u003cbr\u003e\n2018 Yamaha YZ250F Base\u003cbr\u003e\n2018 Yamaha YZ250FX Base\u003cbr\u003e\n2018 Yamaha YZ250X Base\u003cbr\u003e\n2018 Yamaha YZ450F Base\u003cbr\u003e\n2018 Yamaha YZ450FX Base\u003cbr\u003e\n2019 Yamaha WR250F Base\u003cbr\u003e\n2019 Yamaha WR450F Base\u003cbr\u003e\n2019 Yamaha YZ125 Base\u003cbr\u003e\n2019 Yamaha YZ250 Base\u003cbr\u003e\n2019 Yamaha YZ250F Base\u003cbr\u003e\n2019 Yamaha YZ250FX Base\u003cbr\u003e\n2019 Yamaha YZ250X Base\u003cbr\u003e\n2019 Yamaha YZ450F Base\u003cbr\u003e\n2019 Yamaha YZ450FX Base\u003cbr\u003e\n2020 Yamaha WR250F Base\u003cbr\u003e\n2020 Yamaha WR450F Base\u003cbr\u003e\n2020 Yamaha YZ125 Base\u003cbr\u003e\n2020 Yamaha YZ125X Base\u003cbr\u003e\n2020 Yamaha YZ250 Base\u003cbr\u003e\n2020 Yamaha YZ250F Base\u003cbr\u003e\n2020 Yamaha YZ250FX Base\u003cbr\u003e\n2020 Yamaha YZ250X Base\u003cbr\u003e\n2020 Yamaha YZ450F Base\u003cbr\u003e\n2020 Yamaha YZ450FX Base\u003cbr\u003e\n2021 Yamaha WR250F Base\u003cbr\u003e\n2021 Yamaha WR450F Base\u003cbr\u003e\n2021 Yamaha YZ125 Base\u003cbr\u003e\n2021 Yamaha YZ125X Base\u003cbr\u003e\n2021 Yamaha YZ250 Base\u003cbr\u003e\n2021 Yamaha YZ250F Base\u003cbr\u003e\n2021 Yamaha YZ250FX Base\u003cbr\u003e\n2021 Yamaha YZ250X Base\u003cbr\u003e\n2021 Yamaha YZ450F Base\u003cbr\u003e\n2021 Yamaha YZ450FX Base","brand":"Renthal","offers":[{"title":"Default Title","offer_id":68304140271851,"sku":"596932","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/c9593a231f7f1432e2bce3a78fdaffbc_e12680b0-14c3-4faf-9bc1-8b0a2d4f9ee7.jpg?v=1793258438","url":"https:\/\/ctracingservices.com\/products\/renthal-150u-520-51gbbu-520-51t-rear-chainwheel","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}