The Dirt Tricks CR-50-D-B Rear Sprocket is a 50-tooth chromoly steel and zirconium sprocket designed for demanding off-road riding. Developed and patented by Dirt Tricks president and engineer Greg Burns, this sprocket reflects advanced aerospace steel knowledge, specialized heat treatment, and finite element analysis stress testing. Its minimalist design delivers durability and dependable performance while maintaining a weight comparable to aluminum sprockets.
Built for Honda applications using a 520 chain, the Dirt Tricks CR-50-D-B features the brand’s Diamond Black and Chromatic design approach, along with a zirconium coating that helps reduce friction by up to 50 percent. The coating also supports increased wear resistance and provides a durable black finish. Dirt Tricks states that its rear sprockets are 2.5 times stronger than stainless steel, making this sprocket suitable for riders who need long service life in demanding terrain and hard-riding conditions.
Feature: 50-tooth rear sprocket compatible with 520 chain systems
Feature: Chromoly steel and zirconium construction for strength and extended durability
Feature: Zirconium coating helps reduce friction by up to 50 percent
Feature: Minimalist design helps balance durability and weight
Feature: Backed by Dirt Tricks’ one-year wear-out guarantee
Feature: Manufacturer part number CR-50-D-B
Feature: Vendor part number 254-120150B
The Dirt Tricks CR-50-D-B fits the 2017 Honda CRF450RX and Honda CR500R model years 1984 through 1988 and 1998 through 2001. Verify the motorcycle model, year, chain size, and required tooth count before installation. Professional installation and correct drivetrain alignment are recommended for optimal performance.
Features:
- 50-tooth rear sprocket for Honda motorcycles using a 520 chain
- Chromoly steel and zirconium construction for strength and extended service life
- Zirconium coating helps reduce friction by up to 50 percent
- Minimalist design balances durability with weight comparable to aluminum sprockets
- 2.5 times stronger than stainless steel according to Dirt Tricks
- Diamond Black finish with a durable, performance-focused design
- Backed by Dirt Tricks’ one-year wear-out guarantee
- Fits 2017 Honda CRF450RX and 1984-1988, 1998-2001 Honda CR500R
- Brand: Dirt Tricks
- Manufacturer part number: CR-50-D-B
- Vendor part number: 254-120150B
Fitment:
1983 Honda CR125R
1984 Honda CR125R
1984 Honda CR250R
1984 Honda CR500R
1985 Honda CR125R
1985 Honda CR250R
1985 Honda CR500R
1986 Honda CR125R
1986 Honda CR250R
1986 Honda CR500R
1987 Honda CR125R
1987 Honda CR250R
1987 Honda CR500R
1988 Honda CR125R
1988 Honda CR250R
1988 Honda CR500R
1989 Honda CR125R
1989 Honda CR250R
1989 Honda CR500R
1990 Honda CR125R
1990 Honda CR250R
1990 Honda CR500R
1991 Honda CR125R
1991 Honda CR250R
1991 Honda CR500R
1992 Honda CR125R
1992 Honda CR250R
1992 Honda CR500R
1993 Honda CR125R
1993 Honda CR250R
1993 Honda CR500R
1994 Honda CR125R
1994 Honda CR250R
1994 Honda CR500R
1995 Honda CR125R
1995 Honda CR250R
1995 Honda CR500R
1996 Honda CR125R
1996 Honda CR250R
1996 Honda CR500R
1996 Honda XR250R
1996 Honda XR400R
1997 Honda CR125R
1997 Honda CR250R
1997 Honda CR500R
1997 Honda XR250R
1997 Honda XR400R
1998 Honda CR125R
1998 Honda CR250R
1998 Honda CR500R
1998 Honda XR250R
1998 Honda XR400R
1999 Honda CR125R
1999 Honda CR250R
1999 Honda CR500R
1999 Honda XR250R
1999 Honda XR400R
2000 Honda CR125R
2000 Honda CR250R
2000 Honda CR500R
2000 Honda XR250R
2000 Honda XR400R
2000 Honda XR650R
2001 Honda CR125R
2001 Honda CR250R
2001 Honda CR500R
2001 Honda XR250R
2001 Honda XR400R
2001 Honda XR650R
2002 Honda CR125R
2002 Honda CR250R
2002 Honda CRF450R
2002 Honda XR250R
2002 Honda XR400R
2002 Honda XR650R
2003 Honda CR125R
2003 Honda CR250R
2003 Honda CRF150F
2003 Honda CRF230F
2003 Honda CRF450R
2003 Honda XR250R
2003 Honda XR400R
2003 Honda XR650R
2004 Honda CR125R
2004 Honda CR250R
2004 Honda CRF150F
2004 Honda CRF230F
2004 Honda CRF250R
2004 Honda CRF250X
2004 Honda CRF450R
2004 Honda XR250R
2004 Honda XR400R
2004 Honda XR650R
2005 Honda CR125R
2005 Honda CR250R
2005 Honda CRF150F
2005 Honda CRF230F
2005 Honda CRF250R
2005 Honda CRF250X
2005 Honda CRF450R
2005 Honda CRF450X
2005 Honda XR650R
2006 Honda CR125R
2006 Honda CR250R
2006 Honda CRF150F
2006 Honda CRF230F
2006 Honda CRF250R
2006 Honda CRF250X
2006 Honda CRF450R
2006 Honda CRF450X
2006 Honda XR650R
2007 Honda CR125R
2007 Honda CR250R
2007 Honda CRF150F
2007 Honda CRF230F
2007 Honda CRF250R
2007 Honda CRF250X
2007 Honda CRF450R
2007 Honda CRF450X
2007 Honda XR650R
2008 Honda CRF150F
2008 Honda CRF230F
2008 Honda CRF250R
2008 Honda CRF250X
2008 Honda CRF450R
2008 Honda CRF450X
2009 Honda CRF150F
2009 Honda CRF230F
2009 Honda CRF250R
2009 Honda CRF250X
2009 Honda CRF450R
2009 Honda CRF450X
2010 Honda CRF150F
2010 Honda CRF230F
2010 Honda CRF250R
2010 Honda CRF250X
2010 Honda CRF450R
2010 Honda CRF450X
2011 Honda CRF150F
2011 Honda CRF230F
2011 Honda CRF250R
2011 Honda CRF250X
2011 Honda CRF450R
2011 Honda CRF450X
2012 Honda CRF150F
2012 Honda CRF230F
2012 Honda CRF250R
2012 Honda CRF250X
2012 Honda CRF450R
2012 Honda CRF450X
2013 Honda CRF150F
2013 Honda CRF230F
2013 Honda CRF250R
2013 Honda CRF250X
2013 Honda CRF450R
2013 Honda CRF450X
2014 Honda CRF150F
2014 Honda CRF230F
2014 Honda CRF250R
2014 Honda CRF250X
2014 Honda CRF450R
2014 Honda CRF450X
2015 Honda CRF150F
2015 Honda CRF230F
2015 Honda CRF250R
2015 Honda CRF250X
2015 Honda CRF450R
2015 Honda CRF450X
2016 Honda CRF150F
2016 Honda CRF230F
2016 Honda CRF250R
2016 Honda CRF250X
2016 Honda CRF450R
2016 Honda CRF450X
2017 Honda CRF150F
2017 Honda CRF230F
2017 Honda CRF250R
2017 Honda CRF250X
2017 Honda CRF450R
2017 Honda CRF450RX
2017 Honda CRF450X
2018 Honda CRF230F
2018 Honda CRF250R
2018 Honda CRF250X
2018 Honda CRF450R
2018 Honda CRF450RX
2018 Honda CRF450X
2019 Honda CRF230F
2019 Honda CRF250R
2019 Honda CRF250RX
2019 Honda CRF250X
2019 Honda CRF450R
2019 Honda CRF450R W.E.
2019 Honda CRF450RX
2019 Honda CRF450X
2020 Honda CRF230F
2020 Honda CRF250R
2020 Honda CRF250RX
2020 Honda CRF250X
2020 Honda CRF450R
2020 Honda CRF450R W.E.
2020 Honda CRF450RX
2020 Honda CRF450X
2021 Honda CRF250R
2021 Honda CRF250RX
2021 Honda CRF250X
2021 Honda CRF450R
2021 Honda CRF450R W.E.
2021 Honda CRF450RX
2021 Honda CRF450X
2022 Honda CRF250R
2022 Honda CRF250RX
2022 Honda CRF450R
2022 Honda CRF450R W.E.
2022 Honda CRF450RX
2022 Honda CRF450X
2023 Honda CRF250R
2023 Honda CRF250RX
2023 Honda CRF450R
2023 Honda CRF450R W.E.
2023 Honda CRF450RX
2023 Honda CRF450X
2024 Honda CRF250R
2024 Honda CRF250RX
2024 Honda CRF450R
2024 Honda CRF450R W.E.
2024 Honda CRF450RX
2024 Honda CRF450X
2025 Honda CRF250R
2025 Honda CRF250RX
2025 Honda CRF450R
2025 Honda CRF450R W.E.
2025 Honda CRF450RX
2025 Honda CRF450X
2026 Honda CRF250R
2026 Honda CRF250RX
2026 Honda CRF450R
2026 Honda CRF450R W.E.
2026 Honda CRF450RX
2026 Honda CRF450X