e*thirteen Extended Range Cog 40t Shimano 34t Compatible, Blue

The e*thirteen Extended Range Cog in a 40-tooth configuration is designed for riders looking to expand their gearing range. This cog is compatible with Shimano 34t systems and fits Shimano/SRAM 8, 9, and 10-speed cassette bodies, making it a versatile addition to your drivetrain.

• 40-tooth extended range cog for added climbing capability
• Compatible with Shimano 34t setups
• Fits Shimano/SRAM 8, 9, and 10-speed cassette bodies
• Weighs approximately 77 grams
• Finished in a blue color to match your build