well no and no.. They're used cause a slammed -17ยบ stem is a lot more aero (apparently). And I think these look a lot better than a 25mm stack of spacers..
Stiffer also or so I've heard.
@Tijs started
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well no and no.. They're used cause a slammed -17ยบ stem is a lot more aero (apparently). And I think these look a lot better than a 25mm stack of spacers..