Honda XR100 – Everything You Need To Know About It

Looking to get a Honda XR100? They aren’t being made anymore, but they’re still good dirt bikes for the right person. I’ve had a few of them over the years, so I’m going to give you all of the most practical info and advice on this 100cc Honda.

What Is The Honda XR100?

It’s a 100cc air-cooled 4 stroke trail bike with a 5 speed manual transmission and clutch. It’s designed for teens, young adults, women, or any shorter rider that wants to learn how to ride a dirt bike with a clutch.

It is big enough for adults to use as a pit bike, yet has a short enough seat height for a kid (just over 30″). It’s smooth power makes it easy to ride, and has enough torque to do most anything the bike should handle. These are key factors as to why it’s so popular.

A clean stock 2000 Honda XR100 4 stroke dirt bike
My old 2000 Honda XR100

XR100R vs XR100 Differences

What’s is the difference between the Honda XR 100R and the Honda XR 100? Nothing, besides the added letter. At least not after 1985 XR100R is the actual name designation that Honda gave this dirt bike. Many people just use XR100 to shorten it up and save time when typing it in or saying it out loud.

With that said, the 1984 and earlier XR100 has an older design, which includes the lower performance dual rear shocks. In 1985, Honda officially renamed it the XR100R and went to a single rear spring shock.

When Did Honda Stop Making The XR100?

Technically, the last year of the XR100 was in 2003. However, the CRF100F, which is virtually the same dirt bike, was built until 2016, when Honda transitioned to the CRF125.

“I Just Want To Ride!”

This slogan pretty much sums up Honda’s line-up of trail-bikes. You can roll the XR100 off the showroom floor and ride it! Unlike motocross bikes, you shouldn’t have to adjust anything on the suspension, carburetor/FI system, gearing, or add other ‘race-mods’ before riding it.

The Do-It-All Starter Bike

Why is it one of the best dirt bike to start out on? It’s extremely easy to ride, and has every control you’ll ever use! Kick-start, throttle, brakes, clutch, suspension…. What more do you need from a “First-bike”? The XR100 is easy enough for a kid to kick-start it, so you don’t need the added weight of a battery and starter; although one could come in handy when stalled on a hill.

The engine is very forgiving with its clutch and buttery-smooth power. It’s a lot more difficult to stall this on the trails than a motocross bike. Even though the newest CRF100F only puts out a measly 6 horsepower, it’s still enough to chug around the property with an adult on the saddle.

Suspension

For what it is, suspension on the XR/CRF 100 is pretty versatile. While I don’t recommend racing one in its stock form, it sure can take a beating. Many adults and bigger kids (me) like to rip around on these bikes; hence why finding a roached XR100 for sale is common. Why do we do it? Because it’s so fun on a smaller bike that you can just whip around.

All in all, the stock springs are meant for some under 130lbs that trail rides. It will last longer than it should if you jump it, but you risk breaking the frame, handlebars, and possibly more. Stiffer springs and an aftermarket frame cradle are a must if you’re going to race/jump this bike.

Engine

The 100cc four-stroke air-cooled engine that powers the Honda XR 100 and CRF 100 has virtually stayed the same over the past few decades (other than the CDI ignition upgrade in ’92). It may not be up to date with today’s four-stroke motocross bike technology, but why change something that already works, and works well!

The power is very smooth and manageable, and can still get you out of a lot of messes. Due to a heavy flywheel and low gearing, stalling is not an issue on the XR 100. It offers just enough power to hand you loads of fun, yet wont’ get you or a beginning rider into too much trouble.

This 100cc dirt bike engine is commonly used the sheer pleasure by many adults. It is an excellent starting point because it’s cheap, easy to work on, and has the potential to be a fast little machine. XR100’s are used to make pit bikes, supermoto, flat-track, and mini motocross for these reasons.

Reliability

This is where Honda gets its name. The reliability of the Honda XR machines are at the top step. If you keep up on maintenance (which isn’t much), the XR100 will last for years, if not decades, on the stock engine. Keep oil in it by changing it after about 10-15 hours of use (depending on the riding conditions), keep the air filter clean, and don’t let the gas go bad.

It’s pretty common to see well used XR 100’s from the early-mid 90s with as little as a piston re-ringing or valve-shimming. It’s amazing how long these things will last, especially for how high they rev (no rev-limiter). Reliability is one of the main reasons adults use this engine for their pit bikes. Even after modifying the engine it can still last a long time.

XR100 Specs

Engine99cc air-cooled 4 stroke
TransmissionManual Clutch 5-speed
Seat Height30.5″
Weight (wet)174lbs.
Top Speed50mph

XR100 vs TTR125

While the TTR125 has slightly more power, the XR100 can still hold its own. I like the ergonomics and handling of the 2001 and newer models. However, none of them have electric start.

So, which is better? The biggest difference is electric start option on the Yamaha. Both the XR100 and TTR125 have plenty of aftermarket mods available. I’d go with the one that you can find the best deal on in good condition.

You Should Buy An XR/CRF100 If You:

  1. Want cheap fun
  2. Enjoy riding more than maintaining
  3. Want to learn how to ride a motorcycle
  4. Like pit bikes
  5. Trail ride
  6. Like the 4-stroke power curve
  7. Want an easy to ride bike
  8. Want a back-up bike

You Shouldn’t Buy An XR100 If You:

  1. Expect a race bike in stock form
  2. Don’t like having fun

Add a gallon of gas and you’re in for some serious fun…

What’s an XR100 Worth?

You can check bluebook prices, but they generally not be accurate. The best way to determine the value or worth of an XR100 is to check the local market. This goes for any dirt bike, as it’s all about supply and demand.

An XR100 in good shape is generally worth around 900-1200 in the U.S., but it may be hard to find one that cheap if there’s very few of them available. The opposite goes for a surplus of XR100’s.

The second most important factor to its worth is the actual condition of the dirt bike. If you’re going to look at one to potentially buy, make sure you know what to look for so that you don’t get screwed over.

XR100 Mods?

While a stock XR100 is fairly restricted to more skilled riders and weekend warriors, there are endless mods and upgrades you can do to beef up this bike to make it more potent. A pipe and heavy duty suspension upgrade may be all it takes to provide hours and hours of fun.

However, some of us that are more on the edge like to go a step or four further… This can turn into an all-out pit bike build that starts with an XR 100 engine as the power-plant, but uses a modified chassis/suspension from an 85cc 2-stroke motocross bike.

If you want to add even more fun, modifying an XR100 is a great hobby if you enjoying wrenching on things, plus it’ll be faster if you add the right engine and suspension upgrades. Click Here to learn what the top 5 five mods are for the XR100.

Kelley Fager

I help new riders learn how to safely ride and understand how to tune and fix your dirt bike in your garage.

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