The Bell BR.1 left side forced air kit contains everything needed to make your Bell BR.1 (SA2010 & SA2015) a true forced air helmet.
To modify your Bell BR.1 helmet for forced air, you remove the left side plate using a #1 Phillips Screwdriver (the small pointy one) and simply replace the non-vented plate with your new forced air piece with 1.25" hose barb. On the right side (inboard side) remove the vented face piece and replace it with the non-vented piece to keep all that forced air inside your helmet to keep you cool.
This is a complete kit including the left side forced air piece with Old-Style (1.25" Barb), right side block-off plate and new screws.
Bell BR.1 Side Air Kit with 1.25" Hose Barb Details: