Works at four times the rate of double accel. Drains more chakra from the user than at Accel’s previous stage. An Jounin Rank/Skill-Level Shinobi can use this for three seconds per use of the technique, each additional rank adds 2 seconds.
Negative Side effects: Overuse (Maintaining the technique for more than 1/2 posts) will cause muscle tearing > oxygen deprivation > chakra deprivation > intense pains in the chest area, and eventually a hard attack. If fighting off the heart attack for too long it strikes with such intensity that it spells instant death for the user