Arai's peel-away temple crown pads give the option of 5 mm more interior width if needed.
REBEL / CHASER-V / QUANTUM-ST PRO / SZ-RAM 4 / CHASER-V PRO
The Arai limited Warranty and after-sales services are offered exclusively to customers in possession of Arai helmets sold through an authorized Arai retailer. Any Arai helmet offered for sale by a non-authorized dealer (particularly over the Internet) may be counterfeit or may be stolen or defective. Therefore Arai declines all responsibility.