I bought Chinese crabon to get low stack over road bars, these exact ones are out of stock but you can get the same mould from other shops on amazon/ebay/aliexpress, I only paid £16
https://www.amazon.co.uk/Lixada-Carbon-Bicycle-Handlebar-Aerobar/dp/B0759V4XK8/ref=redir_mobile_desktop?_encoding=UTF8&psc=1&ref=yo_pop_d_pd
Seen these on an ultra/audax guy preparing for LEL (on an otherwise slave Concorde of all things). Looked perfect.
@Ptown started
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I bought Chinese crabon to get low stack over road bars, these exact ones are out of stock but you can get the same mould from other shops on amazon/ebay/aliexpress, I only paid £16
https://www.amazon.co.uk/Lixada-Carbon-Bicycle-Handlebar-Aerobar/dp/B0759V4XK8/ref=redir_mobile_desktop?_encoding=UTF8&psc=1&ref=yo_pop_d_pd