Kids and mini · Four stroke
The kids' trail bike and pit bike that everyone has owned or borrowed. Auto clutch, four speed, air cooled, and impossible to kill. The L version has a manual clutch for bigger riders. Sold in Australia from 2002 to 2020, 19 model years.
The KLX110 is the bike that fills every pit and every back paddock. It is a 112cc air cooled four stroke with a four speed gearbox and an automatic clutch, electric start on the newer bikes, and a build quality that shrugs off years of neglect. The KLX110L (and later the R L) has a manual clutch and taller suspension for older kids and adults.
It suits kids from about seven to eleven, or an adult who wants a pit bike. It is heavier and better built than most cheap imports, and a used one is worth what you pay for it because it will still be running in ten years.
Change the oil every 10 to 15 hours or a few times a season. It takes about a litre of 10W 40 four stroke oil and there is no filter, just a screen. Clean the air filter every few rides and keep the chain adjusted and oiled.
Check the valve clearances once a year and the brakes before every ride. On the carburetted bikes, drain the carburettor before storage.
Engine hours between jobs: the schedule the Digital Garage tracks for this bike, based on the manual. Racers and hard riders go sooner, as above. Ride in sand or mud and halve the engine ones.
| Job | Every |
|---|---|
| Air filter clean and re-oil | 5h |
| Chain clean, lube and adjust | 8h |
| Engine oil change | 15h |
| Oil filter replace | 15h |
| Spoke tension check | 15h |
| Fastener torque check | 15h |
| Cables and throttle lube | 30h |
| Air boot and intake seal check | 40h |
| Silencer repack | 40h |
| Valve clearance check | 60h |
| Spark plug replace | 60h |
| Fuel filter / in-tank screen | 60h |
| Linkage bearings grease | 60h |
| Tyres inspect / replace | 60h |
| Tubes and rim locks | 60h |
| Rear brake pads | 60h |
| Clutch plates inspect | 80h |
| Chain slider, guide and roller | 80h |
| Front brake pads | 80h |
| Grips inspect / replace | 80h |
| Top end inspect (piston, rings, cylinder) | 100h |
| Carburettor / throttle body clean | 100h |
| Chain and sprockets replace | 100h |
| Fork service (oil and seals) | 100h |
| Swingarm bearings grease | 100h |
| Steering head bearings grease | 100h |
| Wheel bearings inspect | 100h |
| Radiator, hoses and clamps | 100h |
| Shock service | 120h |
| Cam chain and tensioner inspect | 150h |
| Brake discs inspect | 150h |
| Wiring and connectors | 150h |
| Bottom end inspect / rebuild | 200h |
| Water pump seal and impeller | 200h |

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Look for a straight frame, wheels that spin true, working brakes and a throttle that snaps shut. On the carburetted bikes make sure it starts and idles cleanly. On the electric start bikes check the battery holds a charge. Check for a stretched chain and hooked sprockets. Cosmetics do not matter on a KLX110.
Recent sold prices are on the Marketplace page linked below.
None listed right now. Selling one? List it free →
Old fuel gums it up. Drain it before storage.
Nobody oils a pit bike chain. Check for stretch.
Adults riding it bottom it out. Not a fault.