Renthal 420-55P Rear Grooved Sprocket, Model 189U-420-55GRRD

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.

The Renthal UltraLight Rear Chainwheel is a CNC-machined rear sprocket made from 7075 T6 aluminum. It is engineered and tested for precise fitment, concentricity, and load dispersion, with tooth profiling designed to support efficient power transfer. The lightweight aluminum construction is stated to be 66% lighter than steel, while the hardwearing surface treatment helps support durability in powersports applications.

This red grooved sprocket has 55 teeth and is identified by Renthal manufacturer part number 189U-420-55GRRD. The vendor part number is 189U-420-55GRRD. According to the provided fitment information, it fits 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.

Features:

• Brand: Renthal
• Model: 420-55P
• Manufacturer part number: 189U-420-55GRRD
• Vendor part number: 189U-420-55GRRD
• Construction: CNC-machined 7075 T6 aluminum
• Weight design: Stated to be 66% lighter than steel
• Tooth count: 55 teeth
• Color: Red
• Design: Grooved rear sprocket with tooth profiling for power transfer
• Fitment: 2007–2015 Honda CRF150R and 1986–1988 Honda CR80R, as listed

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1
Fitment:
1986 Honda CR80R Base
1987 Honda CR80R Base
1988 Honda CR80R Base
1989 Honda CR80R Base
1990 Honda CR80R Base
1991 Honda CR80R Base
1992 Honda CR80R Base
1993 Honda CR80R Base
1994 Honda CR80R Base
1995 Honda CR80R Base
1996 Honda CR80R Base
1996 Honda CR80RB Expert Base
1997 Honda CR80R Base
1997 Honda CR80RB Expert Base
1998 Honda CR80R Base
1998 Honda CR80RB Expert Base
1999 Honda CR80R Base
1999 Honda CR80RB Expert Base
2000 Honda CR80R Base
2000 Honda CR80RB Expert Base
2001 Honda CR80R Base
2001 Honda CR80RB Expert Base
2002 Honda CR80R Base
2002 Honda CR80RB Expert Base
2003 Honda CR85R Base
2003 Honda CR85RB Expert Base
2004 Honda CR85R Base
2004 Honda CR85RB Expert Base
2005 Honda CR85R Base
2005 Honda CR85RB Expert Base
2006 Honda CR85R Base
2006 Honda CR85RB Expert Base
2007 Honda CR85R Base
2007 Honda CR85RB Expert Base
2007 Honda CRF150R Base
2008 Honda CRF150R Base
2009 Honda CRF150R Base
2012 Honda CRF150R Base
2013 Honda CRF150R Base
2014 Honda CRF150R Base
2015 Honda CRF150R Base
2016 Honda CRF150R Base
2017 Honda CRF150R Base
2018 Honda CRF150R Base
2019 Honda CRF150R Base
2020 Honda CRF150R Base
2021 Honda CRF150R Base