By I have been building and repairing small dirt bikes in my garage in southern Ohio for more than a decade, and I still enjoy working on the KLX110 more than almost anything else. I started with my own bike, then friends began bringing theirs over, and eventually local riders started asking me for help with upgrades. Over the years I have installed dozens of parts on stock trail bikes and heavily modified race setups. Every build teaches me something new, even after all this time.
The Parts I Replace Most Often
The first thing I tell anyone about the KLX110 is that it rewards smart upgrades. I have seen riders spend a fortune chasing horsepower while ignoring suspension or controls. Most of the bikes that leave my garage get a mix of practical changes and a few performance parts that actually match how the owner rides.
Handlebars are usually first on my list. The stock bars work fine for younger riders, but taller teenagers and adults almost always need more room. I have swapped bars, grips, and taller bar mounts on bikes ridden by people over six feet tall, and the difference in comfort is obvious within the first few minutes.
Foot pegs are another upgrade I rarely skip. Wider pegs give riders better control in mud and loose dirt, especially during long trail rides. A customer last spring came in after slipping off the stock pegs several times on wet terrain, and after installing wider pegs he told me he felt more planted and confident.
I also replace chains and sprockets more often than many people expect. Stock gearing is fine for casual riding, but riders who race or ride tighter trails often prefer changing the tooth count. Even a two-tooth difference in the rear sprocket can noticeably change how the bike pulls through corners.
Where I Usually Shop for Upgrades
I have ordered parts from many places over the years, and I tend to stick with shops that specialize in these small bikes instead of giant marketplaces. Having accurate fitment information saves me time and keeps projects moving. Nothing kills momentum faster than waiting a week for a part that does not fit.
One resource I often recommend to riders looking for KLX110 parts is a dedicated pit bike supplier that carries everything from engine kits to suspension components. I like being able to compare different options without digging through pages of unrelated products. That makes planning a build much easier, especially when I am trying to stay within a customer’s budget.
Over time I have learned that cheaper is not always better. I once installed a bargain clutch lever assembly because the owner wanted to save money, and the fit was sloppy right out of the box. A few weeks later we replaced it with a better quality setup and wished we had done that from the beginning.
Good vendors also provide clear photos and installation notes. Those details matter more than people think. When I am halfway through a build and notice a bracket sits a few millimeters differently than stock, having good documentation can save an hour of frustration.
Engine Mods That Actually Feel Worthwhile
Engine upgrades are exciting, but I try to keep expectations realistic. The KLX110 is a small bike, and I think the best builds keep its personality intact instead of trying to turn it into something it was never meant to be. More power is fun, though balance matters just as much.
A larger carburetor paired with a proper intake is usually where I start. The throttle response becomes sharper, and the bike feels more eager coming out of corners. Riders notice it immediately. That reaction never gets old.
Big bore kits are popular, and I have installed quite a few. Most riders enjoy the added torque more than the peak horsepower because the bike becomes easier to ride aggressively without constantly revving the engine. I still remember helping a father upgrade his son’s bike, and after the first ride they both came back smiling and arguing about who got to ride it next.
Camshafts can also wake up the engine, although results vary depending on the rest of the setup. I usually tell people to think of the engine as a system. Installing a high performance cam without supporting parts rarely gives the result riders imagine.
Reliability matters to me. I have seen heavily modified engines run flawlessly for years, and I have seen rushed builds fail after a few rides. Careful assembly and realistic goals make a bigger difference than chasing every available horsepower.
Suspension and Handling Matter More Than Horsepower
Some of my favorite KLX110 builds barely touch the engine. Instead, the owners invest in suspension, brakes, and ergonomics. The result is a bike that feels faster because the rider can push harder with confidence.
Fork springs are one of those upgrades people underestimate. The stock front end feels soft for heavier riders, and stiffer springs transform how the bike behaves over bumps and during braking. I weigh around 190 pounds, and I noticed the improvement immediately on my own bike.
Rear shocks deserve attention too. There are excellent aftermarket options available at several price points, and even a modest upgrade can improve stability. A friend of mine rides rough woods trails almost every weekend, and his upgraded shock helped keep the rear tire planted in places where the stock setup struggled.
Brakes are another area where small changes make a difference. Braided brake lines and quality pads improve feel without requiring major modifications. I prefer upgrades that riders notice every time they ride rather than parts that only shine under perfect conditions.
Why I Still Enjoy Building These Bikes
The KLX110 has a personality that keeps pulling me back. It is approachable, simple to work on, and surprisingly capable once you start tailoring it to the rider. I have watched kids outgrow them, only to buy another one years later because they missed the experience.
There is also a creativity to these builds that I appreciate. No two bikes end up exactly the same. Some owners want a quiet trail machine, while others chase every bit of performance they can squeeze from the platform.
I still get excited when a box of parts arrives at my garage. Opening it feels a little like opening gifts as a kid. Even after countless builds, I enjoy figuring out how each new combination of components will change the bike.
That is probably why I keep working on KLX110s year after year. They are small motorcycles with big personalities, and every time I finish another build I start thinking about what I want to change on my own bike next.
