You get a Shimano SF-MX30 single freewheel sprocket for threaded single speed or BMX hubs, with a steel body that weighs 179g. The teeth are cut for a clean chain line, and the 16T black or metallic silver finish keeps the look simple.
Fits common chain widths
It works with thin 3/32" and 1/8" chains, so you can match it to a stripped-down city build or a BMX setup without hunting for odd parts. The steel surface feels solid, not soft, and it holds up when you're spinning through stop-start rides.
Pick the tooth count you ride
Choose 16T, 17T, or 18T in metallic silver when you want a little more room to fine-tune gearing. Small change, noticeable feel. Easier starts, steadier speed, and a sprocket that bolts into the part of the bike you actually notice every day.
