ZeroNoise Replacement Ear Cups for Bell Intercom Helmets These ear cups are direct replacements for those used in Bell motorsport helmets with integrated ZeroNoise intercom headsets. Ideal for restoring comfort and passive noise reduction when original cups are worn, damaged, or lost. Compatible with: Bell helmets originally fitted with ZeroNoise intercom ear cups Restores passive noise reduction and wearing comfort Includes cushions Sold as a pair Part number: 6400029 Worn or flattened ear cups let stage and track noise back in and make intercom audio harder to pick up. Replacing them restores the seal without touching the rest of your intercom installation. If you're unsure whether these ear cups are compatible with your specific Bell helmet model, contact us — our team can confirm fitment before you order. Why buy from Harris Race Radios? Genuine, warranty-backed Bell parts with fast shipping across New Zealand and Australia. Harris Race Radios is an authorised Bell Helmets dealer for New Zealand and Australia, and NZ and Australia's most experienced motorsport helmet and communications specialist.