트랙본사에 메일을 보내서 받은 답장입니다.

궁금해하실분이 있으실것 같아서...



Thanks for your email.  At times when certain components are not available
we have to replace products with comparable products in order to ship them
out.  The Sram Cassette was used in order to ship the bike and it is a very
nice cassette.



초보자가 바라본 자전거 세상이었습니다.