Bell M8 Ultra Carbon Racing Helmet - SA2025
Bell M8 Ultra Carbon Racing Helmet - SA2025
Couldn't load pickup availability
The Bell M8 Ultra Carbon Helmet – SA2025 delivers premium protection and performance for automotive racers. Built with an ultra-lightweight carbon fiber shell and certified to the latest Snell SA2025 standard, it offers exceptional visibility, cooling, and comfort. Ideal for closed-cockpit racing, it’s designed for serious drivers who demand uncompromising quality.
Size Guide
| Head size (cm) | Head size (in) | Bell numeric size | Letter size | US hat size |
|---|---|---|---|---|
| 51 | 20.1 | — | 4X-Small | 6 3/8 |
| 52 | 20.5 | 52 | 3X-Small | 6 1/2 – 6 5/8 |
| 53 | 20.9 | 53 | — | — |
| 54 | 21.3 | 54 | XX-Small | 6 3/4 – 6 7/8 |
| 55 | 21.7 | 55 | X-Small | 7 |
| 56 | 22.0 | 56 | — | — |
| 57 | 22.4 | 57 | Small | 7 1/8 – 7 1/4 |
| 58 | 22.8 | 58 | Medium | 7 1/4 – 7 3/8 |
| 59 | 23.2 | 59 | — | — |
| 60 | 23.6 | 60 | Large | 7 1/2 |
| 61 | 24.0 | 61 | X-Large | 7 5/8 – 7 3/4 |
| 63 | 24.8 | — | XX-Large | 7 7/8 – 8 |
| 65 | 25.6 | — | 3X-Large | 8 1/8 – 8 1/4 |
| 67 | 26.4 | — | 4X-Large | 8 3/8 – 8 1/2 |
How to measure: run a tape around your head at the widest point, about 2.5 cm (1 in) above your eyebrows and just above your ears.
Bell's numeric sizes ARE your head circumference in centimetres. If you measure 58 cm, you buy a 58. The carbon and Pro helmets (GT6, RS7, HP6, HP7, HP10, M.8 Carbon, GP3, GTX.3, Mag-10 Pro, KC7 karting) are sold this way.
Bell's Sport-line helmets use letter sizes instead — K.1 Sport, K.1 Pro, M.8, M.8 Sport, Sport Mag, Mag Open Face, GP3 Sport, BR8 Air, Mag Rally and RS7-K Pro. Use the Letter size column for those.
Intermediate sizes (56+, 57-, 59+, 61+) are in-between fits offered on some carbon and Pro shells for a head that falls between two whole centimetres. Bell does not publish a measurement for them, so if you land between sizes send us your measurement and we will tell you which one to take.
A racing helmet should be snug. It should not rotate independently of your head, and after ten minutes on you should feel even pressure with no hot spots. Inches are converted from Bell's centimetre figures and rounded.
Source: Bell Racing USA official size guide.
Sizing is from the manufacturer and varies between brands. Measure yourself and compare against the table rather than ordering your usual street size.