M-LOK 3M™ PELTOR™ X4 Earmuffs X4P51E
These 3M™ PELTOR™ X4 Earmuffs X4P51E allow you to mount hearing protection directly to your Kevy Hard Hat. Be sure to watch the install video in the product images on this page!
***These will only fit our Kevy Hard Hats, NOT ANY OF OUR BALLISTIC HELMETS***
- Noise Reduction Rating (NRR) between 25–27 dB (depending on the attachment type)
- Low-profile cup design for improved compatibility with other personal protection equipment (PPE)
- High ratio of NRR to earcup depth
- 3M E-A-Rfit Dual-Ear Validation System testable
- Slow-recovery, high-density foam
- Replaceable ear cushions and foam liners (hygiene kit HYX4)
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SHIPPING & RETURNS
Same-Day Shipping on in-stock items: Place your order before the daily cutoff time, and we'll ship it out to you on that very day. In cases where a product is out of stock, we take pride in offering faster lead times than our competitors, so you can still expect a speedy delivery.
Exchanges & Returns: Be sure to inspect your new helmet carefully when you receive it — if you notice any defects or are dissatisfied with it for any reason, send it back to us within 30 days for a hassle-free exchange or refund.
WARRANTY
- Lifetime Warranty on Hard Components
- 1-Year Warranty on Soft Components
Please note that our warranty does not cover normal wear and tear, misuse, abuse, or improper storage of your ballistic helmet.








M-LOK 3M™ PELTOR™ X4 Earmuffs X4P51E

Hassle-Free Exchanges & Returns
Return any item in new condition within 30 days, no questions asked.

Same Day Shipping
In stock items ship same day on orders placed before 10:00AM CST.

Lifetime Repairs
We stand by our products, offering a lifetime warranty for hard components.

Fully Tested by Accredited Laboratories
We only use 3rd-party labs accredited by the NIJ or ANSI.

Battle Scars Warranty
If one of our helmets saved your life, we’ll replace it with a new one.