There is no compromise when it comes to gearing, one tooth up or down is the difference between victory and loss or clearing or casing the gap. So we make sure our discs come in a full range of useable sizes, so you can gear up to suit your needs. The BMX style Saturn disc comes in sizes from 32 to 42 teeth. 32, 34, 36, 37, 38, 39, 40, 42. Sizes 37t 38t 39t Weight 150 to 227g