| Unlockable | How to unlock |
|---|
| Espio's Knight Suit: | Win Espio Cup in Single Player. |
| Espio's Mummy Suit: | Beat silver 20 times with Espio. |
| Espio's Ninja Suit: | Win Espio Cup in Single Player. |
| Espio's Race Suit: | use Espio's Signature Move 20 times. |
| Knuckles's Armor Suit: | Win Knuckles Cup in Single Player. |
| Knuckles's Eggman Suit: | Win Knuckles Cup in Single Player. |
| Knuckles's Gladiator Suit: | Beat Rouge 20 times in any mode with Knuckles. |
| Knuckles's Race Suit: | Attack any rival 50 times with Knuckles. |
| Metal Sonic's Circuits Suit: | Win Metal Cup in Single Player. |
| Metal Sonic's Jester suit: | Beat Tails 20 times with Metal Sonic. |
| Metal Sonic's Mach 3.0 Suit: | Successfully copy every Rival's Signature. Moves with Metal Sonic. |
| Metal Sonic's Mach2.0 Suit: | Win Metal Cup in Single Player. |
| Rouge's Armor Suit: | Beat Knuckles 20 times with Rouge. |
| Rouge's Race Suit: | Collect 500 Rings with Rouge. |
| Rouge's Raider Suit: | Win Rouge Cup in Single Player. |
| Rouge's Stealth Suit: | Win Rouge Cup in Single Player. |
| Shadow's 80's Suit: | Win Shadow Cup in Single Player. |
| Shadow's Flame Suit: | Win Shadow Cup in Single Player. |
| Shadow's Mercenary Suit: | Beat Sonic 20 times in any mode while using Shadow. |
| Shadow's Race Suit: | Use Shadow's Chaos Control 20 times. |
| Silver's Christmas Suit: | Win Silver Cup in Single Player. |
| Silver's Cyber Suit: | Beat Espio 20 times in any mode with Silver. |
| Silver's Lightning Suit: | Win Silver Cup in Single Player. |
| Silver's Race Suit: | Use Silver's Signature Move on any Rival 20 times. |
| Sonic's Black Tie Suit: | Beat Shadow 20 times in any mode with Sonic. |
| Sonic's Cheetah Suit: | Win Sonic Cup in Single Player. |
| Sonic's Ice Suit: | Win Sonic Cup in Single Player. |
| Sonic's Race Suit: | Run 15,000 meters with Sonic. |
| Tails's Ace pilot Suit: | Log 3 minutes of fly time with Tails. |
| Tails's Captain Suit: | Win Tails Cup in Single Player. |
| Tails's Tiger Suit: | Beat metal sonic 20 times with Tails. |
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