Stilo Helmet to 4C IMSA/Road-Race Adapter Stainless 5mm primary pipes which are

5mm primary pipes which are larger in diameter than the stock/OEM 1

simply wash with warm water and re-use Includes Deluxe Quad Style Bolt-On tips in you choice of finish Optimized for maximum performance with NO catalyst generated check engine light

Printed with the classic Martini graphics on one side

while the floating sleeves improve flexibility

Stilo Helmet to 4C IMSA/Road-Race Adapter Stainless 5mm primary pipes which areStilo Helmet to 4C IMSA Road Race Adapter. IMSA style plugs are popular in all forms of road racing in the United States and this cable connects your Stilo helmet to an IMSA car to pit radio system.