Differences between B1 & B2

[John_ZAR]

I would like to know what the difference is between the B1 and the B2, I think the B2 1st stage had the new piston and seat but is this the only difference. Are the 2nd stages identical internally. If I stick a piston upgrade into my B1 is it a B2?

 

[Dr. Lecter]

The first stage would be. The second stage may or may not be a different case...I know the case on my Z1 second stage was smaller and different than the seconds on the B2, M1, and ST1.

 

[Scared Silly]

As said with the piston upgrade the first stage would be a B2. And as said for the second stage about 6-7 years ago Atomic change the design of the case to be a higher flow. It made slight difference in performance in the second stage. So if one changes the piston functionally one has B2 first stage. Everything else is really cosmetic. The parts kits are the same across the board.

 

[John_ZAR]

Thanks guys, would the color kits fit the B1. My covers are completely trashed and it doesn't seem as though I can get replacement covers I have to buy the whole kit.

 

[Scared Silly]

Thanks guys, would the color kits fit the B1. My covers are completely trashed and it doesn't seem as though I can get replacement covers I have to buy the whole kit.

The cases are universal. Sometimes you can find the old B1 covers. The best option is to look for a B2 color kit. It comes with the cover, cover ring, adjustment knob, and mouth piece.