| MODEL | HARLEY-DAVIDSON STREETFIGHTER 975 PROTOTYPE 2018 |
| Year | 2018 |
| Engine Type | Four stroke, 60° V-twin, DOHC |
| Displacement / Capacity | 975 cc / 59.5 cu in |
| Bore X Stroke | — |
| Compression Ratio | — |
| Cooling System | Liquid cooled |
| Max Power | — |
| Max Torque | — |
| Ignition | — |
| Induction | — |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | — |
| Clutch | — |
| Final Drive | Belt |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Upside-down telescopic fork |
| Rear Suspension | — |
| Front Brakes | 2 x cross-drilled discs, Brembo radial-mount Monoblock calipers |
| Rear Brakes | Single cross-drilled disc, Harley-Davidson opposed-piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
Shown in mid-2018 as part of Harley-Davidson's 'More Roads' plan, the Streetfighter 975 was a styling prototype for a naked middleweight aimed at younger, urban riders. It previewed the new liquid-cooled 975 cc twin-cam V-twin from the modular Revolution Max family, wrapped in a stubby, aggressive bodywork with upside-down forks, 17-inch wheels and Brembo brakes. The project later took the Bronx name but never reached showrooms.
