Sprocket rear Renthal Ultralight 397U-520-40P-HA 40 teeth - 397U-520-40P-HA

• made entirely of ultra-light aluminium 7075 T6 alloy
• CNC machined sprocket to achieve the highest possible precision
• teeth designed with a special technology allowing them to clean themselves
• anodised surface finish provides an integral coating to prevent corrosion
• advanced teeth profile and accuracy of fit ensure maximum power transfer to the rear wheel

The 7075 T6 aluminium alloy used is 66% lighter than steel!