Neptune Helm 25t Bolt Drive BMX Aluminum Sprocket / Chainwheel - Silver - USA Made Gumwall this industry-trusted standard boasts a

this industry-trusted standard boasts a 3-pawl system that engages 30 steps every 12 degrees and is constructed with chromoly steel

95"  (ISO 355mm)

The Tange DX-4 1-1/8" threadless headset has lightweight and strong aluminum cups and loose-ball bearings

Linear Housing prevents binding during bearskins

Neptune Helm 25t Bolt Drive BMX Aluminum Sprocket / Chainwheel - Silver - USA Made Gumwall this industry-trusted standard boasts aThe 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!