| MODEL | YAMAHA XSR 155 2019 - 2021 |
| Year | 2019 - 2021 |
| Engine Type | Four stroke, single cylinder, SOHC, 4 valve with variable valve actuation |
| Displacement / Capacity | 155.1 cc / 9.14 cu in |
| Bore X Stroke | 58.0 x 58.7 mm |
| Compression Ratio | 11.6:1 |
| Cooling System | Liquid cooled |
| Max Power | 14.1 kW / 19 hp @ 10000 rpm |
| Max Torque | 14.7 Nm / 10.8 lb-ft @ 8500 rpm |
| Ignition | TCI |
| Induction | Fuel injection |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 6-speed, slip-and-assist clutch |
| Clutch | Wet multiple-disc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel Deltabox |
| Front Suspension | Upside-down telescopic fork |
| Rear Suspension | Monoshock on die-cast aluminium swingarm |
| Front Brakes | Single 282 mm disc, 2 piston caliper, ABS |
| Rear Brakes | Single 240 mm disc, 1 piston caliper, ABS |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 810 mm / 31.8 in |
| Wheelbase | 1330 mm / 52.3 in |
| Ground Clearance | 170 mm / 6.6 in |
| Dry Weight | — |
| Wet Weight | 134 kg / 295.4 lbs |
| WHEEL SPECS | |
| Front Tyre | 110/70-17 |
| Rear Tyre | 140/70-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 10 Litres / 2.6 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The smallest member of Yamaha's Sport Heritage family, built on the MT-15 platform and using the YZF-R15 155 cc VVA engine unchanged. It borrows its retro styling from the XSR700 and XSR900: teardrop tank, round LED headlamp, tan ribbed seat and round LED tail light. Aimed mainly at Asian markets.
