Leatt GPX 5.5 FlexLock Boot Review First Ride

Getting a feel for Leatt’s all-new motocross and off-road boots.

After three years of development, Leatt introduced its new GPX 5.5 FlexLock boots to the media at LACR MX in Palmdale, California.
After three years of development, Leatt introduced its new GPX 5.5 FlexLock boots to the media at LACR MX in Palmdale, California.Kevin Tyler

After three years of development, Leatt has released its new GPX 5.5 FlexLock boots. With the addition of this new boot to its product line, Leatt now offers head-to-toe protection for motocross and off-road riders. The designers at Leatt wanted to create a boot that would optimize grip and maneuverability to help keep the rider connected to their bike, while at the same time supporting their feet and ankles, and reducing the forces to the ankles and knees upon impact.

With the addition of the GPX 5.5 FlexLock boot to its product line, Leatt now offers head-to-toe protection for motocross and off-road riders.
With the addition of the GPX 5.5 FlexLock boot to its product line, Leatt now offers head-to-toe protection for motocross and off-road riders.Kevin Tyler

To accomplish this, the designers came up with what they refer to as the “FlexLock” system that, when measured against a comparable unnamed competitor’s boot, reduces the ankle forces up to a claimed 37 percent and knee forces up to a claimed 35 percent.

The FlexLock is a multi-directional system that, similar to most hinged off-road boots, allows the boot to hinge forward and backward. Additionally, it has an inward and outward flexing ability that is designed to mimic your natural ankle movement. The amount that the boot flexes in this direction is limited by the FlexLock system so that your ankle is supported before it hyperextends.

The GPX 5.5 FlexLock boots are currently offered in three colorways—black, royal, and white/black.
The GPX 5.5 FlexLock boots are currently offered in three colorways—black, royal, and white/black.Allan Brown

The boots have four buckle straps along with a slide lock cuff, which is a one-way Velcro-type system at the top of the boot that allows you to close the boot, tighten the straps, and the top shin guard closes in with the strap, even after the Velcro is closed. This helps in closing the top of the boot, which sometimes seems to stay open on other boots, even after the buckles are cinched up.

For comfort, the internals are cushioned with impact foam to help give a snug fit and a comfortable and soft feel. The boot’s width is designed for wide feet with a large yet low-profile toe box to make shifting easy. But how do they perform?

How Does The Leatt GPX 5.5 FlexLock Boot Feel?

My first impression of these boots was very positive. They have good styling and when I first handled them, they felt like a quality product. The buckles seem strong and durable. Inside the boot, you can see that there is plenty of padding to provide a comfortable feel. The inside ankle area is clean with somewhat of a rubbery feel that should help you grip the bike. The upper part of the boot has a lot of plastic in its design, but still seems fairly flexible.

I requested a size US 8/European 42, which is normally on the small side for me because I like a tighter feeling boot. When I looked at the boot, my first thought was, ‘Oh boy, these look small.’ However, when I put my foot into the boot, it was welcomed with a good amount of padding and a very spacious toe box. I would say I have an average width foot and there was plenty of room for those who have wider feet.

The slide lock Velcro on the upper shin guard and good footpeg/rear brake pedal feeling are a couple of positive qualities we noticed about the GPX 5.5 FlexLock boots after our first day of riding in them.
The slide lock Velcro on the upper shin guard and good footpeg/rear brake pedal feeling are a couple of positive qualities we noticed about the GPX 5.5 FlexLock boots after our first day of riding in them.Kevin Tyler

Adjusting the bootstraps was easy and the buckles closed with a secure feeling. The slide lock cuff worked amazingly, allowing me to really close up the boot nice and snug around my calf. This could be advantageous in muddy/wet conditions as it may reduce the water and mud that gets into your boot. It works almost like when you duct-tape the top of your boot. I walked around in the boot just to see how much of a break-in period there might be and found the boots were very comfortable right from the get-go, so it was time to hit the track.

At first, as expected, the boots felt a little new, but within 15 minutes of riding, I reached a point where I was quite comfortable with the feel of the footpegs and downshifting. It took me a little longer to get a confident feeling of the rear brake pedal and a good feeling for upshifting. Overall, the time it took to get familiar with the pegs, shifter, and rear brake pedal was quick. I would say after about 45 minutes of actual riding, I felt at home in the GPX 5.5 FlexLock boots.

The GPX 5.5 FlexLock boots might be a little loose if you have a narrow foot, and they could offer a little more ankle movement resistance.
The GPX 5.5 FlexLock boots might be a little loose if you have a narrow foot, and they could offer a little more ankle movement resistance.Kevin Tyler

While there was a good amount of padding and support inside the boot and around the ankle area, I still had good feeling between my ankles. There seemed to be enough padding, but it’s not too bulky. The smooth inner ankle area gripped the bike as expected and didn’t hang up on anything. The sole had a good footpeg feel with the right density of rubber. It grabbed the peg without sticking to it when it came time to move your foot forward or backward.

One thing I did notice, that I have never felt before, was airflow around the back of my thigh. When my legs were positioned just right, there was some ventilation. I think on dry, warmer summer days this could be a nice feature. I am just not sure what it would be like in rainy conditions or during a water crossing.

Verdict

With a retail price of $389.99, the GPX 5.5 FlexLock boots offer higher-end technology at a mid-level price point.
With a retail price of $389.99, the GPX 5.5 FlexLock boots offer higher-end technology at a mid-level price point.Kevin Tyler

My overall impression of the Leatt GPX 5.5 FlexLock boot is positive. The fitment is accurate for my feet, the styling is good, and the function is better than I expected. They offer a great amount of comfort with a decent amount of support. The ankle hinge works smoothly and the ankle FlexLock system helps make them almost ready to ride right out of the box. With a retail price of $389.99, you are getting a boot that has higher-end technology at a mid-level price point.