| MODEL | YAMAHA STAR BOLT R-SPEC 2018 - 2019 |
| Year | 2018 - 2019 |
| Engine Type | Four-stroke, 60° V-twin, SOHC, 4 valves per cylinder |
| Displacement / Capacity | 942 cc / 58 cu in |
| Bore X Stroke | 85 x 83 mm |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Max Power | — |
| Max Torque | 8.2 kgf-m / 59.3 ft-lb @ 3000 rpm |
| Ignition | Digital TCI |
| Induction | 35 mm dual-bore throttle body fuel injection |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed |
| Clutch | — |
| Final Drive | Belt |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 41 mm telescopic fork, 120 mm / 4.7 in travel |
| Rear Suspension | Preload adjustable dual shocks |
| Front Brakes | Single 298 mm disc, 2-piston caliper |
| Rear Brakes | Single 298 mm disc |
| DIMENSION SPECS | |
| Overall Length | 2290 mm / 90.2 in |
| Overall Width | 830 mm / 37.2 in |
| Overall Height | 1120 mm / 44.1 in |
| Seat Height | 690 mm / 27.2 in |
| Wheelbase | 1570 mm / 61.8 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 247 kg / 545 lbs |
| WHEEL SPECS | |
| Front Tyre | 100/90-19 |
| Rear Tyre | 150/80-16 |
| FUEL SYSTEM | |
| Fuel Capacity | 12 Litres / 3.1 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 2018-19 R-Spec remains the stripped-back bobber of the Bolt family, with piggyback-style rear shocks, black-out mirrors and a textured seat over the base Bolt. Engine and chassis are unchanged: a 942 cc air-cooled V-twin, belt drive and a low 690 mm seat.
