Quick view Add to Wishlist NITROUS OXIDE SYSTEMS Nitrous Oxide Systems Safety Blow-Off Cap w/Diffuser NOS16169 Nitrous Down Tube Adapter - Blow-Off Adapter - 8 AN - Diffuser Cap - Aluminum / Stainless - Blue Anodized - Kit MSRP: $109.99 $89.99 Add to Cart The item has been added Compare