Three Prime 9 Groupset

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Box's Prime 9 Technology is a counter-intuitive philosophy based on the less is more theory. It embraces range without adding complexity. The outcome is fewer parts, reduced weight , and increased durability. The wide rear derailleur features a limited slip clutch, which engages instantly with constant torque for less chain slap, better chain engagement and no dropped chains The 11-46t cassette offers ultra-wide ratio with consistent progressions Show more