Bell K.1 Pro Circuit Racing Helmet - SA2020
Bell K.1 Pro Circuit Racing Helmet - SA2020
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Bell K.1 Pro Circuit Racing Helmet — SA2020. Race-ready multi-discipline full-face helmet.
The K.1 Pro Circuit is a race-ready, multi-discipline full-face helmet featuring a lightweight composite shell, aggressive aero chin-bar and spoiler design, and Snell SA2020 certification — built for karting, open-wheel and closed-cockpit racing. The bold Circuit graphics stand out on track.
WHAT'S INSIDE THE SHELL
- Lightweight composite shell
- Aggressive aero chin-bar and spoiler design
- Multi-discipline fit — karting, open-wheel, closed-cockpit
- Bold Circuit graphics
CERT
Snell SA2020.
FAQ
What disciplines does this helmet cover?
Karting, open-wheel and closed-cockpit racing — it's built as a multi-discipline helmet.
Is this a dressed-up version of the standard K.1 Pro?
It carries the Circuit graphics treatment on the same SA2020-certified lightweight composite shell and aero chin-bar/spoiler design.
FastLap Supply Take: Same SA2020 fundamentals as Bell's other K.1 Pro offerings, with Circuit graphics for racers who want to stand out without changing disciplines.
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Helmet Size Charts
Head measurements vary by brand. Measure the widest part of your head above the ears.
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XS | 20-7/8 - 21-1/4 | 53-54 | 6-5/8, 6-3/4 |
| S | 21-5/8 - 22 | 55-56 | 6-7/8, 7 |
| M | 22-3/8 - 22-3/4 | 57-58 | 7-1/8, 7-1/4 |
| L | 23-1/4 - 23-5/8 | 59-60 | 7-3/8, 7-1/2 |
| XL* | 24 - 24-3/8 | 61-62 | 7-5/8, 7-3/4 |
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XXS | 21-1/2 - 21-5/8 | 54-55 | 6-3/4, 6-7/8 |
| XS | 22 | 56 | 7 |
| S | 22-3/8 | 57 | 7-1/8 |
| M | 22-3/4 - 23-1/4 | 58-59 | 7-1/4, 7-3/8 |
| L | 23-5/8 | 60 | 7-1/2 |
| XL | 24 - 24-3/8 | 61-62 | 7-5/8, 7-3/4 |
| XXL | 24-3/4 - 25-1/4 | 63-64 | 7-7/8, 8 |
| 3XL | 25-5/8 - 26 | 65-66 | 8-1/8, 8-1/4 |
| 4XL | 26-3/8 - 26-3/4 | 67-68 | 8-3/8, 8-1/2 |
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XXS | 21-1/2 - 21-5/8 | 54-55 | 6-3/4, 6-7/8 |
| XS | 22 | 56 | 7 |
| S | 22-3/8 | 57 | 7-1/8 |
| M | 22-3/4 - 23-1/4 | 58-59 | 7-1/4, 7-3/8 |
| L | 23-5/8 | 60 | 7-1/2 |
| XL | 24 - 24-3/8 | 61-62 | 7-5/8, 7-3/4 |
| XXL | 24-3/4 - 25-1/4 | 63-64 | 7-7/8, 8 |
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XS | 20-7/8 - 21-1/4 | 53-54 | 6-5/8, 6-3/4 |
| S | 21-5/8 - 22 | 55-56 | 6-7/8, 7 |
| M | 22-3/8 - 22-3/4 | 57-58 | 7-1/8, 7-1/4 |
| L | 23-1/8 - 23-1/2 | 59-60 | 7-3/8, 7-1/2 |
| XL | 23-7/8 - 24-1/4 | 61-62 | 7-5/8, 7-3/4 |
| XXL | 24-3/4 - 25-1/8 | 63-64 | 7-7/8, 8 |
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XS | 21-1/4 - 21-5/8 | 54-55 | 6-3/4, 6-7/8 |
| S | 22 - 22-1/2 | 56-57 | 7, 7-1/8 |
| M | 22-7/8 - 23-1/4 | 58-59 | 7-1/4, 7-3/8 |
| L | 23-5/8 - 24 | 60-61 | 7-1/2, 7-5/8 |
| XL | 24-3/8 - 24-3/4 | 62-63 | 7-3/4, 7-7/8 |
| XXL | 25-1/4 - 25-5/8 | 64-65 | 8, 8-1/8 |
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XXS | 21-1/2 - 21-5/8 | 54-55 | 6-3/4, 6-7/8 |
| XS | 22 | 56 | 7 |
| S | 22-3/8 | 57 | 7-1/8 |
| M | 22-3/4 - 23-1/4 | 58-59 | 7-1/4, 7-3/8 |
| L | 23-5/8 | 60 | 7-1/2 |
| XL | 24 - 24-3/8 | 61-62 | 7-5/8, 7-3/4 |
| XXL | 24-3/4 - 25-1/4 | 63-64 | 7-7/8, 8 |
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XXS | 20 - 20-1/2 | 51-52 | 6-3/8, 6-1/2 |
| XS | 20-7/8 - 21-1/4 | 53-54 | 6-5/8, 6-3/4 |
| S | 21-5/8 - 22-1/16 | 55-56 | 6-7/8, 7 |
| M | 22-7/16 - 22-7/8 | 57-58 | 7-1/8, 7-1/4 |
| L | 23-1/4 - 23-5/8 | 59-60 | 7-3/8, 7-1/2 |
| XL | 24 - 24-3/8 | 61-62 | 7-5/8, 7-3/4 |
| XXL | 24-13/16 - 25-3/16 | 63-64 | 7-7/8, 8 |
| 3XL | 25-1/2+ | 65+ | 8-1/8 |
| Size | CM | Hat Size |
|---|---|---|
| XS | 54 | 6-3/4 |
| S | 56 | 7 |
| M | 59 | 7-3/8 |
| L | 60 | 7-1/2 |
| XL | 61 | 7-5/8 |
| XXL | 63 | 8 |
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XS | 21.25 | 54 | 6-3/4 |
| S | 21.65 | 55 | 6-7/8 |
| M | 22.45 | 57 | 7-1/8 |
| L | 22.8 - 23.25 | 58-59 | 7-1/4, 7-3/8 |
| L+ | 23.6 - 24 | 60-61 | 7-1/2, 7-5/8 |
| XL | 24.4 | 62 | 7-3/4 |
| XXL | 24.8 | 63 | 7-7/8 |
| Size | Inches | CM | Hat Size |
|---|---|---|---|
| XS | 20-3/4 - 21-1/4 | 53-54 | 6-5/8, 6-3/4 |
| S | 21-1/2 - 21-7/8 | 55-56 | 6-7/8, 7 |
| M | 22-1/4 - 22-5/8 | 57-58 | 7-1/8, 7-1/4 |
| M/L* | 23 - 23-1/2 | 59-60 | 7-3/8, 7-1/2 |
| L | 23 - 23-1/2 | 59-60 | 7-3/8, 7-1/2 |
| XL | 23-7/8 - 24-1/4 | 61-62 | 7-5/8, 7-3/4 |
Actually Measuring Your Head
Use a soft measuring tape (craft store, like $3). Wrap it around the widest part of your dome, forehead to back, and get the same number twice. Use that number to pick your size. Revolutionary, we know. lol.