BOX Three Prime 9 X-Wide Groupset Multi Shift ModelNumber=C0950 If you have a round

If you have a round seat tube with no braze-on mount

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Highest security disc-style cylinder

Push the head into the locking body until it clicks

BOX Three Prime 9 X-Wide Groupset Multi Shift ModelNumber=C0950 If you have a roundIncludes cassette, derailleur, shifter and chain Single shift options are for eMTB to keep the user from shifting multiple gears under load, significantly reducing the rate of bent teeth and broken chains Cassette fits HG splined Shimano SRAM 8 10sp freehubs Model Box Three Prime 9 Speed 9 Range 11 50t Freehub Type HG (8 11sp) Shifter Multi Shift Color Black Shift Type Multi