| Year | 1986 |
| Bore x Stroke | 84 x 61.3 mm |
| Capacity | 339 cc / 20.7 cu-in |
| Compression Ratio | 9.5;1 |
| Cooling System | Air cooled |
| Dry Weight | 121 kg / 266.7 lbs |
| Engine | Four-stroke, single cylinder SOHC, 4 valve |
| Factory jetting | Main jet -148 Needle jet - N/A Jet needle - 65D Pilot jet - 150 Slide number - 96B |
| Final Drive | Chain |
| Frame | Lightweight semi-double cradle chrome-moly |
| Front Brakes | Single disc |
| Front Suspension | 41 mm Showa air adjustable forks |
| Front Tyre | 90/90 -21 |
| Front Wheel Travel | 280 mm / 11 in |
| Fuel Capacity | 9 Litres / 2.3 US gal |
| Gear Ratio | 1st 2.714:1 2nd 2.000:1 3rd 1.556:1 4th 1.273:1 5 th 1.080:1 6th 0.926:1 |
| Gearing Front / Rear | 14 / 42 |
| Ground Clearance | 320mm / 12.6 in |
| Ignition | CDI |
| Induction | 2x 26 mm Keihin carburetor |
| Max Power | 22.4 hp / 16.7 kW @ 7500 rpm |
| Max Torque | 25.7 Nm / 19 lb-ft @ |
| Rake | 26.5° |
| Rear Brakes | Drum |
| Rear Suspension | Single Showa gas shocks, fully adjustable |
| Rear Tyre | 130/80 -17 |
| Rear Wheel Travel | 270 mm / 10.6 in |
| Road Test | XR350 XR500 Cycle 1983 |
| Seat Height | 920 mm / 32.3 in |
| Spark Plug | NGK DPR8EA-9 or ND X24EPR-U9 |
| Starting | Electric |
| Trail | 116mm / 4.5 in |
| Transmission | 6 Speed |
| Wet Weight | 137 kg / 302 lbs |
| Wheelbase | 1430 mm / 56.3 in |
