Gear set and soup-up MD drag kits for Shimano 21 Antares DC reels. With these kits, your reel will have 6kg drag, 20% more drag capacity than original 5kg. Kit comes with a pinion, a drive gear, 2 drag washers and a metal drag washer and a clutch washer. All of these components are from 23 Antares DC MD reels. The gears are the same as those of 21 Antares DC reels, but the drag system is different from that of 21 Antares DC. Now we carry HG, 7.4:1 gears. The best kit to upgrade 21 Antares DC XG reels toward a little more heavy duty use because HG gears are more durable than XG. You may use this kit to 23 Antares DC MD as well.