Hope 28T Boost 12 Speed Spiderless Retainer - Black Direct mount retainer ring designed specifically for the Hope chainset Saves weight without need for a separate spider Able to run a broader range of smaller chainring sizes The narrow/wide chainring is designed to retain the chain without the need of a chain device Quieter drivetrain and less drag CNC machined 7075-T6 aluminium provides the perfect blend of lightweight and strength Compatible with 9, 10, 11 and 12 speed set-ups Hard anodised finish makes them ultra durable and increases longevity
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