The Tail Strike's icon takes the appearance of Tangle's tail making a spiraling forward movement. In gameplay, this power-up becomes a short-ranged damaging dash where the user twirls around.
In gameplay, the Tail Strike can only be obtained at random from Item Boxes by Tangle. As with most other Items, Metal Sonic can also use the Tail Strike if he uses the Steal Item to steal it from the aforementioned user.
Once obtained, the player can utilize the Tail Spring by pressing its icon on the bottom of the HUD. Unlike other power-ups in Sonic Forces: Speed Battle however, the Tail Strike occupies two Item slots on the HUD: the Projectile Item slot on the left and the Trap Item slot on the right. When used, the user will twirl around and hit all nearby rival characters, including those on the same lane as the user. In addition, the Tail Strike will grant a small speed boost marked by a pale yellow panel on the ground. The afterimage when striking the opponent also appears to be pale yellow. If a rival character is hit by Tail Strike, they will take damage, causing them to lose Rings and slow down momentarily. To avoid the Tail Strike, the playable character has to step away from the user.
The Tail Strike can also be upgraded by leveling the user up. For each upgrade, the player will be more likely to obtain two Tail Strike to use in the Boost and Trap Item slots from a single Item Box. However, different levels will affect different Item slots; upgrading the character to levels 4, 10, and 16 will only affect probability of getting more Tail Strikes in the Projectile Item slot, and upgrading to levels 6 and 12 will only affect probability of getting more Tail Strikes in the Trap Item slot. At maximum level, the user can carry up to four Tail Springs in their inventory.
So far, the Tail Strike is the only Item in Sonic Forces: Speed Battle that can be stored in two Item slots with the same character.