The MT is more silent compared to the LS2 when all the vents and visors are closed. The MT Thunder 4 is the most silent helmet I have owned till now which includes- Steelbird SBA-7, LS2 FF352, SMK Gullwing, and the LS2 FF811.
BHPian advstreak recently shared this with other enthusiasts.
So I decided to get the LS2 FF811 Vector II helmet as it seemed to be a great deal at 12.5k discounted from the 19.8k MRP. But before I could place the order on the website it went out of stock. Also, this is the only fiberglass composite while others in the price range are thermoplastics. I finally found it in a local shop in the color I wanted.
However, within a month of usage, the top bead started to come off and after a week of following up with LS2 India over WhatsApp, they told me to go to the local store for further action. I had emailed them also but there was no response to it.
Upon visiting the local shop I learned that this beading issue was prevalent at least in this batch and I met two other people whose FF811 had the same problem. The option given to me was to wait for the replacement bead to come or exchange it for another helmet. I went ahead with the exchange option I found the double action visor opening mechanism to be cumbersome. Also, the LS2 sunvisor mechanism seemed to get stuck but that was not bothersome for me as anyways I use polarized clip-ons over spectacles.
As I did not want to compromise on ECE 22.06 certification and be in the same price range. The only viable option was to get the MT Thunder 4 SV. But here the compromise was in the color as it is not available in all white colors. Right off the bat, the MT felt a little heavier to hold compared to the LS2 although both have the same weight as per the spec sheet. This could be due to the better weight distribution of LS2 due to fiberglass construction. There was hardly any difference while wearing the helmets.
The MT is more silent compared to the LS2 when all the vents and visors are closed. The MT Thunder 4 is the most silent helmet I have owned till now which includes- Steelbird SBA-7, LS2 FF352, SMK Gullwing, and the LS2 FF811. With the vents, it is comparable to the LS2.
But the MT has a very annoying whistling noise above 50kmph when the visor is kept open due to the very small gap between the shell and the visor edge. This could be a problem for people who ride with visor open at higher speeds.
The other features and foam quality seem to be of the same level between the two of them and I feel very happy with the better noise isolation on the MT Thunder 4.
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