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

FEATURES :

• Hyperglide (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.
• Mushrooming of the pins gives unsurpassed side-plate retention, enabling the chain to far exceed the BS/ISO standard for breaking force.
• 7.3mm chain width, optimised for 7- and 8-speed HG drivetrains.
• 116 links, 335 grams.
• Compatible with Shimano SM-UG51 Quick Links.

SPECIFICATIONS :

• Color : Gray
• Weight : 335
• Width : 7.3
• Links : 116
• Drivetrain Speeds : 6/7/8