Blackspire e-bike chainrings with 104 mm and 64 mm. CNC-machined from 7075-T6 aluminum for durability and light weight. Outer and inner ring blades are cut from 0.160" thick stock. Middle ring blades are cut from 0.190" thick stock. Outer and middle ring blades feature strategically placed shift pins. This chainring's pins are made from high-quality stainless steel for long life. Outer and middle ring blades feature specially designed shift ramps for smooth shifting. For use with 9-, 10-, or 11-speed drivetrains. Anodized 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*

Article number: 595-4242E EAN: 5055958008634 Brands: Blackspire Model: E-BIKE Material: Aluminum Material type: Aluminum Bicycle type Electric bicycle Mountain bike BCD (mm): 64 Number of sprockets: 9 / 10 / 11 speed Number of chainrings: Double Number of teeth: 24 Color: Black