Trek Bontrager helmets, Adding the Mips feature will cost more money...
31.8, or 31.75mm to be precise is 1.25" Asia makes some in Titanium, Or you can contact Ti Cycles, a Custom Shop in Portland Oregon..
reads like you bought the bike now want to change everything, it happens..
may be better to sell that and get another with your needs better met Or N+1, have one for a friend to borrow..
... weights can be looked up.. Sturmey Archer Website? Shimano?
...
Last edited by fietsbob; 03-15-18 at 03:29 PM.