Box Two Prime 9 X-Wide 11-50T Cassette

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The Box Two cassette was where Prime 9 started. Originally conceived as an E-MTB product to deliver long service life and extra range over fewer gears, we quickly grew to enjoy its abilities on unpowered MTBs. All cogs are stamped from steel and subsequently, the larger ones are pinned to alloy spiders. Due to its provenance, this is, without doubt, the most durable cassette in the range. SUPPORT MATERIAL Prime 9 Technology™ View Prime 9 Drivetrain Compatibility Manual View Prime 9 Comparison Chart Why Prime 9? Please see page 6 of our guide for notes regarding the 2 HG drivers. Show more