All-City 612 Track chainset review
If you want to add a bit of bling to your ﬁxie, how about the shiny 612 Track chainset? It’s a cold forged, ﬁve-bolt design with a 144mm bolt circle diameter and a JIS (Japanese Industrial Standard) bottom bracket taper – so it’ll work with Shimano and other bottom brackets.
The 46-tooth chainring is an 1/8in track pitch model – about right for ﬁxed or singlespeed riding when matched to a 16 or 17-tooth rear cog. The 1-1/2in deep arms are deeply scalloped at the back, keeping weight down to a reasonable 761g for the 170mm long version (there’s a 165mm option too), including chainring and bolts.
Weight isn’t really an issue with this type of crank, though – what’s important is stiffness, and that’s something the 612 really delivers, with no ﬂex or vibration. Though we did occasionally rub our heels on the arms, the hard wearing anodised ﬁnish has only dulled slightly in a couple of places. It’s available in red or gold.