Rugged Radios IMSA 4C Wired Helmet Kit with Mic, 3.5mm Ear Bud Jack, and Coil Cord Ride Height Gauge INSTALLATION NOTE: Recommended intake gasket:

INSTALLATION NOTE: Recommended intake gasket: Edelbrock #7217 or Fel-Pro #1206 for #2901

Accepts both square-bore and spread-bore carbs and late model water neck

688 or 1 in ID

26 x 26 x 9

Rugged Radios IMSA 4C Wired Helmet Kit with Mic, 3.5mm Ear Bud Jack, and Coil Cord Ride Height Gauge INSTALLATION NOTE: Recommended intake gasket:IMSA 4C Wired Helmet Kit with Mic, 3. 5mm Ear Bud Jack, and Coil Cord. Features: Tough black molded 4 Conductor Plug. Total Shield RF reflective cable 1 8" ear phone jack M102 Dynamic Military Mic Cloth mic muff Rugged helmet kits offer clear communications and are easy to install. With the new DNC background noise cancelling mics your driver communications will be crystal clear every time. Use with the following: Ear bud speakers: Challenger II,