Front and rear disc brakes provide strong progressive stopping power. The 220mm front petal disc with a dual-piston caliper is complemented by a 186mm* rear petal disc with single-piston caliper, inspiring confidence on the trails.
*KLX140R F rear disc is ø190 mm
The high-revving, 144cc, air-cooled SOHC 4-stroke engine easily starts with the push of a button. Air-cooling eliminates the need for radiators, keeping the chassis slim and lightweight while a 5-speed transmission with manual clutch delivers smooth shifting and acceleration.
A lightweight box-section perimeter frame made from high-tensile steel provides exceptional rigidity and strength. The narrow profile contributes to an easier rider grip and smoother movement on the bike. Working together, the highly capable suspension and lightweight chassis deliver handling that exudes confidence.
The KLX140R L trail bike features larger wheels (19F, 16R), taller seat height (800 mm) and higher 255mm ground clearance, while the KLX140R F trail bike features full-size wheels (21F, 18R) and 315mm ground clearance.
| Engine type | Air-cooled, 4-stroke, single-cylinder |
|---|---|
| Compression ratio | 9.5:1 |
| Valve system | SOHC, 2 valves |
| Bore x stroke | 58.0 x 54.4 mm |
| Displacement | 144 cm³ |
| Fuel system | Carburettor |
| Lubrication | Forced lubrication, wet sump |
| Starting system | Electric |
| Ignition system | Digital |
| Transmission | 5-speed, return shift |
|---|---|
| Clutch | Wet, multi disc |
| Primary reduction ratio | 2.880 (72/25) |
| Gear ratios 1st | 2.667 (40/15) |
| Gear ratios 2nd | 1.895 (36/19) |
| Gear ratios 3rd | 1.474 (28/19) |
| Gear ratios 4th | 1.182 (26/22) |
| Gear ratios 5th | 1.000 (24/24) |
| Final drive | Chain |
| Final reduction ratio | 3.571 (50/14) |
| Frame type | Perimeter, high-tensile steel |
|---|---|
| Trail | 85 mm |
| Wheel travel front | 180 mm |
| Wheel travel rear | 180 mm |
| Tyre, front | 70/100-17 40M |
| Tyre, rear | 90/100-14 49M |
| L x W x H | 1,820 x 790 x 1,050 mm |
| Steering angle L/R | 41° / 41° |
| Wheel base | 1,260 mm |
| Ground clearance | 235 mm |
| Fuel capacity | 5.8 litres |
| Seat height | 780 mm |
| Curb mass | 93 kg |
| Front brake type | Single disc |
|---|---|
| Front brake diameter | Ø 192 mm |
| Front brake caliper type | Dual-piston |
| Rear brake type | Single disc |
| Rear brake diameter | Ø 150 mm |
| Rear brake caliper type | Single-piston |
| Front suspension type | Telescopic fork |
| Rear suspension type | Uni-Trak swingarm |
