Звездочка E Thirteen Extended Range EX 42 зуб. для использования на десятискоростных кассетах.
Why bother with swapping out the 15 or 17 tooth cog and subbing this pie plate gear in?
''It's for the guys who are okay with ten speed and don't want to spend $1,000 USD to go to eleven speed and get a 42 tooth cog,'' says e*thirteen's Todd Bischoff.
https://www.pinkbike.com/news/e13-exten ... -look.html (обзор)
https://www.ebay.com/itm/e-thirteen-Ext ... 2190189323 (подробности)