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Just had a Parlee Z3 drilled for a single hole at the back of the seat tube to run and internal battery. I was going to keep it fully external but my LBS pal said the internal battery makes the whole system much more customizable.
You know shimano makes special wire cover tape too? I didn't until I saw it on a bike the other day. Might not be perfect for your application but would allow you to try Di2 on the bike before committing to drilling holes. If you do decide to go the drill route shimano makes special routing grommets as well. I think what you would really want to do is use a dremel with a tapered grinding stone as opposed to a drill. Plenty of youtube videos by unqualified experts like myself showing what to do.
Wow, I really sound like a shimano shill.
Last edited by Hank Scorpio; 09-20-2019 at 06:37 AM.
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