- Unique flat face design keeps weight to a minimum and means the TwinRing is as narrow as a regular chainwheel
- Inner Ring is high strength Ultralight 7075 T6 Aluminum. Outer Ring is Electroless Nickel Coated steel
- Outer is expanded at 200C and then fitted to inner, creating a permanent fits Bond for the life of the sprocket
- Precision CNC machined to extremely tight tolerances
- Flat socket head screws add additional strength to the chainwheel during side impacts
Color: Blue
Material: Aluminum
Sprocket Position: Rear
Sprocket Size: 520
Sprocket Teeth: 49
Unique flat face design keeps weight to a minimum and means the TwinRing is as narrow as a regular chainwheel. Inner Ring is high strength Ultralight 7075 T6 Aluminum. Outer Ring is Electroless Nickel Coated steel. Outer is expanded at 200C and then fitted to inner, creating a permanent fits Bond for the life of the sprocket. Precision CNC machined to extremely tight tolerances. Flat socket head screws add additional strength to the chainwheel during side impacts. Self-cleaning mud grooves between every tooth on both sides help prevent dirt build up.
1988-1989 fits HON XR250R
2001-2009 fits YAM WR250F
2011-2013 fits YAM WR250F
2015-2022 fits YAM WR250F
2008-2011 fits YAM WR250R
2008-2010 fits YAM WR250X
1999-2000 fits YAM WR400F
2001-2002 fits YAM WR426F
2003-2009 fits YAM WR450F
2011-2021 fits YAM WR450F
1999-2021 fits YAM YZ125
1999-2021 fits YAM YZ250
2001-2023 fits YAM YZ250F
2021 fits YAM YZ250F ME Energy fits YAM Edition
2016 fits YAM YZ250X
1999 fits YAM YZ400F
2000-2002 fits YAM YZ426F
2003-2023 fits YAM YZ450F
2021 fits YAM YZ450F ME Energy fits YAM Edition
