ILM-313 vs GLX GX11: Two Budget DOT Helmets Compared

The short answer, since that is what you came for: the ILM-313 wins on what comes in the box and on how long the manufacturer stands behind the shell. You get a clear visor mounted and a smoked visor in the bag, a neck scarf for cold mornings, a helmet bag, and a five-year manufacturer warranty. The GLX GX11 wins on fit out of the box and on how many finishes you can pick from. Both carry the DOT mark and both meet the federal standard for motorcycle helmets. Neither one makes a crash survivable, because no helmet does. If you want the most helmet for your money in extras and coverage, order the ILM. If your head has always landed between two sizes and you have been burned by a snug medium before, read the fit section before you order anything.

I am Gary Lockridge. I live in Tulsa, I spend my weekdays as a maintenance supervisor, and I spend most weekends on a mid-size cruiser doing 100 to 250 miles of Oklahoma two-lane. Route 66 when I can get it. The lake roads around Grand Lake and Tenkiller when I want shade and a slower pace. I have been riding about twenty years. I put the ILM-313 through a hot June, a wet spring, and one long day of headwind that made me skeptical of every aerodynamic claim ever printed on a helmet box. A riding buddy owns the GLX GX11 and I borrowed it for two full day rides, so I was not comparing my own helmet against a product photo.

	ILM-313	GLX GX11
Safety mark	DOT, meets or exceeds FMVSS-218	DOT marked
In the box	Clear visor, smoked visor, neck scarf, helmet bag	Helmet and a bag
Low sun	Smoked visor ships with it, swap it onto the shell	Tinted shield is a separate purchase
Liner	Crown and cheek pads pull out and wash	Liner is fixed in the shell on the version I handled
Published weight	3 pounds	Not listed on the page I ordered from
Warranty	5 year manufacturer, replacement parts available	No published terms I could find
Fit out of the box	Runs snug, many riders need a size up or a liner swap	Fits true for the riders I know who bought one
Finish choices	Glossy	Several graphics and finishes
Best for	Riders who want both visors, a washable liner, a long warranty	Riders between sizes who want a graphic that is not plain

Where the ILM-313 Wins

Start with the visors, because that is the part you will actually use. The ILM-313 arrives with a clear visor on the shell and a smoked one in the box. On a late afternoon ride west with the sun sitting right at eye level, you pull over once, swap the visor, and you are done. With the GLX you are either riding into that sun behind a clear shield or you are ordering a tinted shield separately and waiting on it to arrive. I have done the squint ride. I do not recommend it, and I do not do it anymore.

The second win is the liner. The crown and cheek pads pull out, which reads like a spec sheet line until August arrives in Oklahoma and you realize you can wash them in the sink and put them back dry. A helmet you cannot wash becomes a helmet you stop wearing, and a helmet hanging on a rack protects nobody. ILM also lists a five-year manufacturer warranty, and the listing notes that you can ask for another liner if the fit is off. That tells you they know the fit is not perfect on every head, which is more honesty than most listings offer.

The third is weight and shape. ILM lists the shell at 3 pounds and describes it as streamlined and aerodynamic, and on the cruiser at highway speed I got less lift and less noise than I expected for this class of helmet. It is not a quiet helmet. Nothing at this end of the market is, and anyone who tells you otherwise is selling something. But it did not try to climb off my head when I came up behind a semi, and I have owned helmets that did.

The neck scarf sounds like a throwaway until you ride an Oklahoma March morning with the temperature in the forties and the wind coming across an open field. It closes the gap between the helmet and your jacket collar, which is exactly where cold air gets in. I used it maybe eight times over the season. Eight times is enough to justify a thing that came in the box instead of a thing I had to go order.

A washable liner, a second visor in the box, and five years of manufacturer warranty. That is the entire case for the ILM-313, and it is a good case.

Where the GLX GX11 Wins

The GX11 won the fit argument, and fit beats features. I wear a medium in most helmets and a large in a few, which is a common place to live. The ILM runs snug. I ended up ordering a size up and it was right, but there was a week in the middle where I was not sure whether I had the wrong helmet or the wrong head. My buddy's GX11 fit him true to his normal size the first time he pulled it on. That is worth real money to a rider buying a first helmet online who does not yet know how a given brand sizes.

The GX11 also comes in a spread of finishes and graphics. The ILM-313, at least the one I bought, is gloss. If you want a helmet that looks the way you want it to look, the GLX gives you choices the ILM does not. That is not a safety argument and it is not a comfort argument. It is the argument you have with yourself in the mirror before a Saturday ride, and it counts for more riders than will admit it out loud.

There is a third thing, smaller but real: the GLX is simple. It is a shell, a shield, a liner, and a strap. Nothing to learn, nothing to adjust, nothing to lose. If you are the kind of rider who wants to put the thing on and go, that simplicity is a feature even though it never shows up on a spec sheet.

The Fit Question Is Most of the Question

Here is the thing about comparing two budget DOT helmets: the shells are close, the certification is the same, and the difference that actually decides whether you are comfortable at mile 180 is the interior shape. Both of these helmets use an ABS shell, which is what this bracket uses, and both carry the DOT mark. Without a lab and a lot of money, neither you nor I can measure one as safer than the other. The one that fits your head is the one that stays put, and the one that stays put is the one that works when it matters.

So measure your head. Not with a tape and a guess, but twice, once above the eyebrows and once around the widest part, and read the size chart for whichever helmet you pick. If you land in the middle of a size, the GLX is the safer bet because it fits like the number on the box says. If you land near the top of a size and you want the extras and the warranty, order the ILM one size up and expect to use the liner swap. ILM clearly built for that, since the warranty text mentions liners for a better fit.

One more note on fit, because this is where riders get burned. A helmet that pinches your forehead will give you a headache in forty minutes, and then you will start leaving it at home. A helmet that is slightly too loose will lift and buffet at highway speed and you will hate it for a different reason. Both of those failures end the same way, with the helmet on a shelf and you on the bike without it. Get the fit right first and argue about visors second.

What Four Hours in the Saddle Feels Like

Spec sheets do not tell you what a helmet feels like at hour four, so here is that part. On the ILM, the padding settles in after a few rides and the pressure across the forehead eases. The shell stays steady in crosswind, which matters on Oklahoma two-lane where the wind comes off open fields with nothing to break it. The chin strap and quick release clasp are easy to work with gloves on, which sounds minor until you are standing at a gas pump in the wind trying to get a glove back on.

On the GX11, hour four felt about the same, which is a compliment. The difference was the first twenty minutes, not the last twenty. The GLX was comfortable out of the bag. The ILM needed a couple of hundred miles before it stopped reminding me it was there. If you ride twice a month and you want the thing to be right immediately, that is a mark in the GLX column and I will not pretend otherwise.

Who Should Buy Which

Buy the ILM-313 if you ride in real sun and real weather, if you want a second visor without ordering one, if you want to be able to wash the liner after a hot day, and if you want a manufacturer standing behind the shell for five years. That covers most weekend riders I know, including me. Buy the GLX GX11 if you are hard to fit, if you have been between sizes your whole life, or if the way the helmet looks is part of why you ride. Both are honest choices at the budget end of the market and I would not talk a friend out of either one.

The rider I would steer away from both is the one who wants a helmet to be a shortcut. Neither of these will save you from a bad decision at an intersection, and neither one is a substitute for a jacket with armor, gloves, and boots. My own rule after twenty years and one low speed slide on gravel is that the gear I actually wear is the gear that works, and everything else hangs on the rack in the garage looking useful and doing nothing.

What Neither Helmet Will Do

Neither of these helmets will make a crash survivable, and any review that implies otherwise is lying to you. DOT and FMVSS-218 mean the helmet passed a test. They do not mean you are invincible, they do not mean you should ride faster, and they do not mean you can skip the rest of your gear. What a decent fitting helmet does is give you a fair chance at the part of a crash a helmet can address. Getting the fit right, replacing a helmet after a drop onto hard pavement, and checking the manufacture date on the tag are the three things that actually matter after you buy. Everything else is preference.