Vega Helmet Corp. is recalling more than 30,000 XTS motorcycle helmets after the National Highway Traffic Safety Administration said people using the helmets may not be adequately protected in a crash, according to the NHTSA’s web site. The recall will start in late January and centers on large, extra-large and extra-extra-large (or XXL) helmets. The models in question were made between May 2011 and last October. Vega will replace the recalled helmets.

The NHTSA told Vega that four extra-large helmets didn’t meet safety standards when tested earlier this year. The company investigated and found that the helmets fell out of compliance partially due to changes in the model’s shell design. Vega told regulators that the helmet’s design would be reconfigured immediately.

According to a letter from an attorney representing the company to an NHTSA official, Vega admitted it doesn’t know precisely how many of the helmets failed to meet the Federal Motor Vehicle Safety Standard, so the company is recalling all of them.

[Source: NHTSA]