If you've got a Campag multiple speed rear wheel and you want to run single speed for a while, just switch the multiple speed cassette for this simple cog and spacer kit. (*and ensure you can either adjust or tension the chain suitably).
The large 10mm wide foot on the CNC machined and drilled steel cog spreads the load over a greater surface area than a straight single cog and will significantly reduce the risk of the cog biting into your alloy freehub splines.
The superlight drilled, splined alloy spacers are offset to allow a degree of chainline adjustment.
Supplied with an 18T cog. (16 and 17T sizes are available separately).
Superlight drilled cog and spacers.
10mm wide foot avoids damage to freehub.
5/64" Teeth fits 1-9speed chains.