You probably know that the red key unlocks all 707hp in the Hellcat Challenger while the black key restricts the best to just 500hp, but how much impact does that have on real world performance numbers?




A Hellcat Challenger owner put together a comprehensive video showing the power differences between the 500hp black key mode and the 707hp red key mode when making a hard run from 50-100mph.

Click here to check out the results on the DF Front Page!