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Smith 4D Mag Replacement Lenses

2 Reviews
chromapop storm blue sensor lens
Select Style: chromapop storm blue sensor lens
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Frame Size
Standard fit with average frame width and depth
Lens Shape
Expanded field of vision with less lens distortion
Lens Swap
Quick Change
Swap your lenses on-the-go with minimum effort
Lighting Conditions
Ideal for riding at night and in low light, stormy conditions (VLT: 55-100%)


Smith raised the bar once again for lens innovation and visibility with the 4D Mag lenses. The BirdsEye Vision lens increases your vertical range of view so you can finally see your own pockets, and the MAG lens change system makes it easier than ever to swap out lenses and be adaptable to changing conditions.

Lens Features
  • Spherical Carbonic-X Lens
  • 100% UVA/B/C Protection
  • BirdsEye™ Vision
  • Porex Filter Technology
  • Tapered Lens Technology (TLT)
Quick Release Lens
  • 4D MAG


Lens Features

Spherical Carbonic-X Lens - Smith has set the standard in lens performance. Each lens is individually molded to offer optimum scratch and impact resistance, increased visual acuity, and enhanced contrast sensitivity. The inner lens is impregnated with Smith's Anti-Fog lens treatments for increased anti-fog performance. The Carbonic-X lens meets Class 1 optical standards as well as ANSI Z80.3 standards.

100% UVA/B/C Protection - All Smith lenses provide 100% protection from harmful UVA/B/C rays.

BirdsEye™ Vision - Smith's BirdsEye™ Vision lens features a curvature on the bottom of the lens, increasing your peripheral field of view by 25% making it easier to look down and lace your boots or to see what you're doing when you're digging through your pockets.

Porex Filter Technology - Changes in elevation bring changes in atmospheric pressure. These forces have the potential to diminish the optics of thermal lens systems. Smith's patented Porex filter solves this issue by allowing the air pressure within the sealed lens chamber to equalize with the atmosphere outside, ensuring class 1 optical standards.

Tapered Lens Technology (TLT) - When light passes through a medium, it refracts, or changes course. If left uncorrected, this refraction can cause visual distortion and eye fatigue. Smith's Tapered Lens Technology straightens out the incoming light rays by progressively tapering the lens from the optical center toward the peripheral view. What this means for you is that you see with 100% accuracy and maximum comfort.

Quick Release Lens

4D MAG - Flip up the quick release levers, pop out the lens and remove from the magnetic contact points, then place new lens on magnetic contact points and secure with side levers.


Overall Rating
Reviewed by 2 customers
by Ryan (Verified Buyer)
Posted on 2/1/2024
Smith 4D Mag Replacement Lenses - clear lens
Clearly they work
0 person has found this review helpful
a good night lens
by Chris Henry in baltimore, MD (Verified Buyer)
Posted on 1/28/2024
Smith 4D Mag Replacement Lenses - clear lens
It's clear but has some polarizing. I like this better than storm rose for night or heavy snowfalls.
0 person has found this review helpful