Shimano Tourney TY - 6, 7, 8-Speed - Hyperglide MTB Chain
The HG-40 chain is designed for precise index shifting on 6, 7, and 8-speed HYPERDRIVE SIS and DUAL SIS drivetrains.
 
It efficiently transmits the power from the chainring to the sprocket of the rear hub. It is exposed to extreme loads and weather conditions. Timely replacement of the chain is the only way to protect chainrings and sprockets from excessive wear. To get the best possible performance from the Shimano HyperDrive system, it is important to use genuine Shimano HG chains.
HG chain for precise HYPERDRIVE SIS/DUAL SIS index shifting