The Mach V Commander Helmet features integrated Cardo Dynamic Mesh Communication (DMC) technology for up to 14 riders, premium JBL speakers with Pressurized Sound Isolation (PSI), and a Venturi Venting System.
The Delta V Commander Helmet also has Cardo DMC technology but connects with up to 15 riders
It also includes an Ignite heated shield to prevent fogging. To use the heated shield, the helmet 12V port needs to be plugged into the sled for additional power to run the helmet.
No, you cannot convert a 509 Mach V street helmet into a 509 Delta V snow helmet.
No, you cannot add a heated shield to the 509 Mach V street helmet.
[Instruction Manual] Delta Helmet Wiring to Snowmobile