When it comes to footwear, fit is always a crapshoot when you get something sight unseen. Thankfully for us, Leatt’s GPX 5.5 boot offer a true-to-size fit with a fairly large toebox area suitable for most feet. I was surprised with just how soft and comfortable the interior of the boot was, something I didn’t know I was missing with decades old boots. All three of the riders who spent time in these boots were impressed with the comfort.
Snapping the buckles into place proved to be our biggest gripe with the boots. Some buckles would need an incredible amount of force one time and then close very easily another. My boots worked well about 85% of the time however Drew’s boots were problematic 50% of the time. We tried lubricating the hardware, which didn’t help but Leatt did send us new buckles. After we got some replacement buckles we felt comfortable modifying the stock buckles and think we discovered the issue. The rounded cams on the buckle hardware seem to be a bit too thick and after we filed them down Drew’s boots would close much smoother more frequently.
The one-way SlideLock Velcro is a really neat feature compared to standard Velcro. I haven’t once had any bunching with the Velcro when compared to traditional Velcro closures which would always have to be redone once the buckles were closed. It’s a small but really neat feature that gives major points to Leatt’s boots.
During the walk and jump test I found the boots to be quite stiff and as intended, the boots offered little movement at the ankle. This means protection should be great on major cases and harsh impacts, but it did have some negatives for trail riding. The sole is also quite stiff and designed for aggressive riders pushing the limits on the track.
So, how do the GPX 5.5 Flexlock boots perform? We’ll be honest, they’re purpose-built boots and if you run them on the track, you’ll probably be very happy. If you’re a trail/enduro rider however, you may agree with our experiences. When it comes to fast, wide open desert riding or days at the track, the Flexlock system and the boot’s overall stiffness is a positive. Being able to squeeze the bike over whoops without having to worry about much movement brings peace of mind.
The downside comes when riding through tight, tree-lined singletrack with lots of elevation changes and shifting. Shifting requires more energy as we had to move our entire leg a bit rather than just move the toe and ankle area to get under the shifter. I also wished the boots gripped a bit better on the pegs. On stock pegs I would find my feet bouncing around the pegs on both my clapped out CRF450 and on our new KLX230 test bike, landing at weird angles and needing to be reset. Both Drew and Matt ride new Husqvarna and KTM bikes with FLO and stock pegs and did not have any major complaints regarding traction, so that could be a personal opinion or the difference between Kawasaki and Honda pegs and nicer KTM/Husky stuff.
I have probably 30+ hours on the boots so far and Drew’s boots have about 15-20 hours of use. They did not require much time to break-in, although they also didn’t loosen up much since that first ride. They are stiff boots. Sadly, in those 30 hours I’ve somehow managed to break the bracket that holds the Flexlock tab in on one of the boots even though I’ve never crashed or cased any massive jumps in them. It is an easily replaceable part, however a bit of a bummer on such new boot.
These boots are jam packed with features but many of them make the boots purpose-specific for a unique rider set. The buckles are nice and sturdy, but don’t always snap into place with ease. The FlexLock system is really neat and offers extra stiffness and protection against hyperextension, which track riders should love. The downside is it makes the boots too stiff for trails where you might be shifting a ton while standing and moving the bike around in tighter terrain. If all you ride is track and/or desert, I don’t think you’ll have many issues or qualms with these boots but we are excited to see if Leatt comes out with a more trail-oriented boot in the future, which they may or may not have eluded to having in the future.
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