Simpson Racing Racing Helmet Radio Communications KitsIMSA - Straight Cord - With Ear Cups Sim Racing 5 in ID - 14

5 in ID - 14 in Length - 185 lb/in Spring Rate - Steel - Copper Powder Coat - Each

25 in - Aluminum - Natural - Small Block Chevy - Each

Throttle Lever Adapter - Kickdown - Steel - Cadmium - Early Holley 4150 Carburetor - GM - Each

Fitting - Hose End - Swivel-Seal - 90 Degree - 6 AN Hose to 3/8 in NPT Male - Swivel - Aluminum - Blue / Red Anodized - Each

Shock Metering Rod - 7600 Series - 12

Simpson Racing Racing Helmet Radio Communications KitsIMSA - Straight Cord - With Ear Cups Sim Racing 5 in ID - 14Simpson is proud to offer Rugged Radio's exclusive communication technology for Racing Radio Driver and Crew Communication systems. Order your favorite Simpson helmet complete with factory installed communications equipment. Save time, save on shipping charges. Simpson helmets are fully certified to be SNELL and or FIA compliant when equipped with Rugged Radio's helmet kit installations.