| Engine Type | 644cc air-cooled dry-sump single-cylinder 4-stroke |
| Bore & Stroke | 100 x 82 mm |
| Compression Ratio | 8.3:1 |
| Valve Train | SOHC; 4-valve RFVC |
| Carburetion | 42.5 mm diaphragm-type CV |
| Ignition | Solid-state CD w/electronic advance |
| Transmission | 5-speed |
| Final Drive | #520 O-ring-sealed chain; 15T/45T |
| Front Suspension | 43 mm air-adjustable leading-axle Showa cartridge fork w/16-position compression damping adjustability; 11.6" travel |
| Rear Suspension | Pro-Link Showa single shock w/spring-preload, 20-position compression- & 20-position rebound-damping adjustability; 11.0" travel |
| Front Brake | Single disc w/twin-piston caliper |
| Rear Brake | Single disc |
| Front Tire | 3.00-21 |
| Rear Tire | 4.60-18 |
| Wheelbase | 57.3" |
| Rake | 27° |
| Trail | 102 mm (4") |
| Seat Height | 37" |
| Ground Clearance | 13" |
| Dry Weight | 324 lbs |
| Fuel Capacity | 2.8 gal, including 0.6 gal reserve |
| Emissions | California version differs slightly due to emissions equipment |
| Model ID | XR650L |