ILM Z501 Full Face Motorcycle Helmet vs Arai Regent-X

Buy the Arai Regent-X if fit, quiet and long-term build quality matter most; it is a premium helmet with a Snell M2020 rating, Arai's intermediate-oval interior and the VAS shield system. Buy the ILM Z501 if you want a versatile budget full-face that ships with two visors, two fins, a washable liner and ECE plus DOT certification. The ILM wins on included accessories and price class; the Arai wins on shell refinement, liner engineering and brand reputation among long-time riders.

• Choose the ILM Z501 if you want a certified full-face helmet with a spare mirrored visor, a washable liner and Pinlock-ready anti-fog support without stepping into premium territory.
• Choose the Arai Regent-X if you have an intermediate-oval head shape and want a Snell-rated, quiet, long-wearing helmet with Arai's VAS shield and multi-density liner.