Neptune Helm 25t Bolt Drive BMX Aluminum Sprocket / Chainwheel - Silver - USA Made 2.40 Bottom bracket NOT included

Bottom bracket NOT included

This 3-piece crank is built to last with durable 4130 chromoly arms

It features a fast rolling centerline offering low rolling resistance paired with raised shoulders for impressive cornering on hardpack

35 (507mm) tires

Neptune Helm 25t Bolt Drive BMX Aluminum Sprocket / Chainwheel - Silver - USA Made 2.40 Bottom bracket NOT includedThe Neptune Helm sprocket is USA made from 6061 aluminum. It has a 15 16'' 23. 8mm (24mm) bore, which can be used with most cranks with the use of the proper sprocket adapter (not included). This item has an anodized finish and laser etched logos. Size: 25tColor: Silver For 19mm adapter click HERE!