A miscellany of homemade and commercial solutions to making an exposed chainring safe for racing
Buy rather than make?
Mounts on the bottom bracket, not on the chainring, so works where others might not. Fits chainrings up to 58T
Also available from ICLETTA
Chainring and integrated guard machined from a single piece of aluminium. Requires a 130/110 BCD spider; only available as 57T, 60T and 65T
Bolt-on chainrings
Guards that bolt onto the spider, like a toothless chainring, are very widely available. Sometimes called bash rings in the MTB/BMX world.
See, for example the Prowheel range