Product Details
This rechargeable cycling helmet combines a PC/EPS/PP construction with built-in front and rear lights. The lights add visibility when illuminated, while the rear adjustment dial and chin straps let you refine the fit for everyday eBike and electric trike rides.
The removable, washable mesh lining and chin padding make routine care easier. Choose your size by measured head circumference, then check the helmet's position and strap adjustment on your own head.
For XHM51, the supplied manual lists white front LEDs, red rear LEDs and four lighting modes. Its 750 mAh battery takes approximately two hours to charge, with about five hours of runtime in the highest-consumption lighting mode. These electronic specifications apply to XHM51 only; XHM55 electronics and weight require separate confirmation.
Dimensions & Specifications
Keep the tape level across the forehead and around the widest part of your head.
M: 21.3–22.4 inL: 22.8–24.0 in| Head circumference | M 21.3–22.4 in (54–57 cm); L 22.8–24.0 in (58–61 cm). |
|---|---|
| XHM51 manual model | KY-Z002; PC + EPS construction. |
| XHM51L labeled weight | 0.79 lb (360 g). |
| XHM51 manual battery | 750 mAh; charge approximately 2 hours; runtime approximately 5 hours in the highest-consumption lighting mode. |
| XHM55 electronics and weight | Confirm separately. |
| XHM51L box label | EN 1078 / 16 CFR 1203 (label transcription; supporting conformity documents not yet reviewed). |
| XHM51 manual light colors | White front LEDs and red rear LEDs. |
| XHM51 manual modes | Front/rear steady; front steady/rear slow flash; front steady/rear fast flash; front off/rear slow flash. |
| XHM51L boxed gross weight | 1.34 lb (609 g); packaging dimensions: 8.66 × 6.50 × 10.83 in (not helmet dimensions). |
Fit & Care
Adjust the rear dial and chin straps according to the supplied instructions. Check that the helmet remains stable and comfortable before riding. Remove the washable lining and chin padding for cleaning as directed, and replace the helmet after an impact.
Charge and operate the lights according to the manual supplied with your selected SKU. The XHM51 manual advises against rainy-day use. Helmet lights supplement appropriate bicycle lighting and do not replace it.
The photographed XHM51L box lists EN 1078 / 16 CFR 1203. Supporting conformity documents have not yet been reviewed, and the label must not be assumed to cover XHM55. The XHM51 manual specifies cycling use, not motorcycle use.
Frequently Asked Questions
Which size should I choose?
Choose M for 21.3–22.4 in (54–57 cm) or L for 22.8–24.0 in (58–61 cm), then confirm a secure individual fit.
What standards are shown on the XHM51L box?
The photographed XHM51L box lists EN 1078 / 16 CFR 1203. Supporting conformity documents have not yet been reviewed, and this label must not be assumed to cover XHM55.
Are the lighting modes the same for every SKU?
The XHM51 manual lists four modes: front/rear steady, front steady/rear slow flash, front steady/rear fast flash, and front off/rear slow flash. XHM55 specifications require separate confirmation.
