Adrenalin's supersmooth and lightweight Derlin bolt. Although the milling is extreme, they have designed it so that the front area is as tight as possible without slowing down the movement of the bolt, so that the air goes down the bolt and not around the bolt. Then as you move down the bolt, you run into some extreme milling with every 1/4" going back to the original size, and then rotating around 90*, so that you dont get all the side to side and wobbling action you get with the smaller bolts. So you get good smooth front to back movement and yet no drag because of the 1/4" sections missing.
Has a venturi style airway with 3 air ways and a rounded head so that it cups the ball touching 50% of the ball and not just 10%, so the result is less breakage.
Rated the most consistent bolt out there. Comes with signature AI milling and Adrenalin Gel Sticker on back. Your choice of black, red, or blue.
The Adrenalin Products Impulse Bolt is older, so while it may be available used and in a few cases new, it is not commonly available anymore.
I have had my AI for about a year now and for the longest I used the standard Adrenalin bolt and had no problems with it.
The bolt is very consistant with air and firing. Efficiency is definitely increased over that of the stock bolt. I have used numerous other bolts for the imp however and found that there are some better.
MY problems began when I got the blackheart. Even after an hour of tinkering I could not hit the speeds the board boasted of. I decided to try a different bolt and found that with a smaller one I could reach those speeds and still maintain consistency and similar air efficiency. Not saying anything's wrong with the bolt but it is fairly large when compared to others.
I would get it over the stock one but there are better one's out there.