IMSA Helmet Kit (Helmet Harness) IMSA The 2015 Nerdie NASCAR System

The 2015 Nerdie NASCAR System is a new evolution of the original system improving on the features with a larger inline PTT and longer PTT and helmet leads now 6' past the inline PTT

just add your radios

but not all

1/4" Switchcraft metal helmet jack for lasting durability

If for some reason the coil cord fails

IMSA Helmet Kit (Helmet Harness) IMSA The 2015 Nerdie NASCAR SystemIMSA Helmet Kit (Helmet Harness) 4 Conductor Plug (Nexus Stlye) Slim line molded Y block and are pre wired for easy installation in any type of helmet. Designed for rugged use, durable polyurethane insulation provides strength, flexibility and abrasion resistance. Spiral shielding provides superior protection against radio frequency (RF) and electro magnetic (EM) interference.