| MODEL | HARLEY-DAVIDSON SPORTSTER 1250S 2025 |
| Year | 2025 |
| Engine Type | Four stroke, 60° V-twin, DOHC, 4 valves per cylinder, VVT (Revolution Max 1250T) |
| Displacement / Capacity | 1252 cc / 76.4 cu in |
| Bore X Stroke | 105 x 72.3 mm |
| Compression Ratio | 12.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 90 kW / 121 hp @ 7500 rpm |
| Max Torque | 126 Nm / 93 lb-ft @ 6000 rpm |
| Ignition | — |
| Induction | Electronic Sequential Port Fuel Injection (ESPFI) |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Semi-dry sump |
| Gear Box | 6 Speed |
| Clutch | Wet, multiplate (8 plates), assist and slip |
| Final Drive | Belt |
| CHASSIS SPECS | |
| Frame | High-strength low-alloy steel trellis with forged aluminium mid-structure, engine as stressed member |
| Front Suspension | 43 mm inverted fork, adjustable compression, rebound and preload, 92 mm / 3.6 in travel |
| Rear Suspension | Linkage-mounted piggyback monoshock, adjustable compression, rebound and hydraulic preload, 82 mm / 3.2 in travel |
| Front Brakes | Single 320 mm disc, radial-mount 4-piston monoblock caliper, ABS |
| Rear Brakes | Single 260 mm disc, single-piston floating caliper, ABS |
| DIMENSION SPECS | |
| Overall Length | 2270 mm / 89.4 in |
| Overall Width | 840 mm / 33.1 in |
| Overall Height | 1085 mm / 42.7 in |
| Seat Height | 734 mm / 28.9 in (laden); 765 mm / 30.1 in (unladen) |
| Wheelbase | 1520 mm / 59.8 in |
| Ground Clearance | 90 mm / 3.5 in |
| Dry Weight | 221 kg / 487 lb |
| Wet Weight | 228 kg / 502 lb |
| WHEEL SPECS | |
| Front Tyre | 160/70R17 73V |
| Rear Tyre | 180/70R16 77V |
| FUEL SYSTEM | |
| Fuel Capacity | 11.7 Litres / 3.1 US gal |
| Fuel Consumption | 4.8 L/100 km / 49 mpg (US) |
| Top Speed | — |
For 2025 the Sportster S received its biggest update since launch, answering complaints about the harsh rear end: rear wheel travel grew by about 60 percent, from 51 mm to 82 mm, with no change to seat height, and both ends are fully adjustable. Cruise control became standard, the engine and exhaust got black finishes, and new paint options and a Checkered V tank medallion were added. The 121 hp Revolution Max 1250T engine and electronic rider aids carried over.
