Accel-S is a Performance Tip released as part of the Burst System as well as the SlingShock System. It debuted in western countries with the release of the SlingShock Single Pack Lightning-X Istros I4 4 Accel-S.
Accel-S, as its name implies, is a SlingShock Performance Tip based off of Accel. However, unlike the original Accel, Accel-S is slightly taller and it features two gaps on either side of its cylinder base, which is meant for the activation of its “SlingShock Mode”. As a part of the SlingShock System, Accel-S can be manually altered to switch between “Battle Ring Mode” and “SlingShock Mode”; in this case, by twisting the tip clockwise, pulling it downwards, and twisting the tip clockwise again, and vice-versa.