I think they're at least two levels below Tiagra.
You can replace the balls with higher grade ones from simplybearings.co.uk, if you want a tiny marginal gain :-)
@gbj_tester started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I think they're at least two levels below Tiagra.
You can replace the balls with higher grade ones from simplybearings.co.uk, if you want a tiny marginal gain :-)