The Lattice Chainring is one of Factory 5's proudest moments in F5 history. They went back to the drawing board with this one and came up with something technically innovative and intrinsically beautiful.
In other words, it’s freaking light and euphemistically gorgeous.
Precision CNC milled from a single piece of 2A50 aluminium, the dual-plane cutouts maintain strength whilst reducing the chainring’s weight to a mere 78g. They’ve radially brushed the ring and had them deep anodized to give the industrial feel they strive for at F5… and the result is something they’re chuffed to say is made in China.
They’re pairing it with our pista track cranks. The arms are 170mm, 144BCD with a JIS taper. On a standard 68mm bottom bracket shell, a 103mm BB will give a 42mm chainline, 107mm for 44mm. The arms and chainring weigh ~650g.