E-Bike 104mm and 64mm chainrings by Blackspire. CNC machined from 7075-T6 aluminum for durability and lightweight. Outer and inner rings are cut from 0.160" thick material. Center blades are cut from 0.190" thick material. Outer and center blades feature strategically placed shift pins. The pins of this chainring are made from high quality stainless steel for long life. Outer and center blades feature specially designed shift ramps for smooth shifting For use with 9, 10 or 11 speed drivetrains Anodized in black with laser etched graphics * 104/38T and 104/40T are designed for 2x drivetrains * * 104 / 38T requires the use of a 64 / 24T or 64 / 26T granny ring 104/40T requires the use of a 64 / 26T or 64 / 28T granny ring *
E-Bike 104mm and 64mm chainrings by Blackspire. CNC machined from 7075-T6 aluminum for durability and lightweight. Outer and inner rings are cut from 0.160" thick material. Center blades are cut from 0.190" thick material. Outer and center blades feature strategically placed shift pins. The pins of this chainring are made from high quality stainless steel for long life. Outer and center blades feature specially designed shift ramps for smooth shifting For use with 9, 10 or 11 speed drivetrains Anodized in black with laser etched graphics * 104/38T and 104/40T are designed for 2x drivetrains * * 104 / 38T requires the use of a 64 / 24T or 64 / 26T granny ring 104/40T requires the use of a 64 / 26T or 64 / 28T granny ring *
