Thread: Ultegra Di2 on a 105 5800 groupset
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Old 11-09-15 | 08:48 AM
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rpenmanparker
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As well as the crank, chain, bottom bracket, and brake calipers. The only parts that need to be matched for DI2 are the two derailleurs and the levers + control box and whatever extra "buttons" you choose.
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