I had a C3 and could immediately tell that the Pro is lighter in weight and has a more effective cooling/venting system. It's really everything I hoped for in a top of the line modular helmet. The clear visor amd sun visor work excellent. Although a bit pricey, I would buy this helmet again.
The speakers are horrible, 550.00 for a helmet you would think they would put a little effort to having some decent sound, no bass, sounds like a tin can. Possibly the cheapest speakers period. Even with the bluetooth voice to voice sound and background noise is annoying.
Nice try but need to upgrade the sound.
C3 Pro does a great job in reducing noise - as advertised. The helmet is very light and is a pleasure on long rides of five hour plus. The fit for me was a bit on the tight side (medium), but I was able to replace the cheek pads with large pad, which made a big difference.The helmet is quieter than other brands, but I still get wind noise at higher speeds. The Sena 10u Bluetooth System installed easily into the helmet. This is the most comfortable helmet I have ever owned.
This is an amazing helmet in every aspect of the word. I also own an Arai Corsair V (Troy Lee Design) helmet. The SR1 is at the same price point but definitely surpassed my expectations. The weight, fit, style and aerodynamics are phenomenal. I'm very picky when it comes to my gear. This is a GREAT helmet and worth every penny.