The HG-40 chain is designed for precise index shifting on 6, 7, and 8-speed HYPERDRIVE SIS and DUAL SIS drivetrains.

• Hyper glide (HG) series 6, 7, or 8-speed compatible chain, recommended for Altus and older Alivio
• STX drivetrains
• HG technology has chamfered inner plates to optimise shifting performance on HG sprockets
• Comes with quick and easy to use connecting link
• Durability is assured through the heat treatment of rollers, pins, and plates