The Profile Imperial Sprocket is easily Profile's best selling sporcket, designed for racing, dirt or light street use. CNC machined from billet aluminium to create a strong and durable yet lightweight sprocket with a uniform cutout pattern helping to keep the weight down. The Imperial Sprocket has a 19mm center bore (supplied with a 19mm top hat washer). ###section### Product Specs TYPE: Bolt On MATERIAL: Alloy WEIGHT: 77g (2.72oz) Colour: Black, White, Green, Polished, Blue, Red, Gold, Purple; Size: 24t, 30t, 35t, 28t, 34t, 33t, 23t, 43t, 37t, 36t, 25t, 41t, 44t, 27t, 40t, 39t, 42t, 29t, 38t, 46t, 31t, 26t, 45t