O.E. style replacement 15T front sprocket for 77-78 Suzuki GS550B/C, 78-79 Suzuki GS550E C/N, 79 Suzuki GS550N, 79 Suzuki GS550L N, 80 Suzuki GS550E/L T, 81 Suzuki GS550L X, 81 Suzuki GS550T X, 82 Suzuki GS550M Z, 82 Suzuki GS550L Z, 83-86 Suzuki GS550L D/F/G & 81-82 Suzuki GS650E X/Z. If you wish to order a different size sprocket to change your gearing, feel free to give us a call to order the size you desire.