Harley-Davidson Harley Davidson Softail Fat Boy (2014) vs Honda Forza 750 (2025) vs Honda NSS 125 Forza (2025) vs Aprilia Tuareg 660 Rally (2025)
Comparison technical specifications
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| Make: | Harley-Davidson | Honda | Honda | Aprilia |
| Model: | Harley Davidson Softail Fat Boy | Forza 750 | NSS 125 Forza | Tuareg 660 Rally |
| Years: | 2014 | 2025 | 2025 | 2025 |
| Engine: | Four stroke, V-Twin, Twin Cam 103B Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, two valves per cylinder, with Integrated Oil-Cooler | Four stroke, parallel twin cylinder, SOHC, 4 valve per cylinder | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder |
| Capacity: | 1690 cc / 103.1 cub in. | 745 cc / 45.4 cu-in | 124.9 cc / 7.6 cu-in | 659 cc / 40.2 cu-in |
| Bore x Stroke: | 98.4 x 111.1 mm | 77 x 80mm | 53.5 x 55.5 mm | 81 x 63.93 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 9.6:1 | 10.7:1 | 11.5:1 | - |
| Induction: | Electronic Sequential Port Fuel Injection (ESPFI) | PGM-FI electronic fuel injection | PGM-FI electronic fuel injection | Fuel injection, 52 mm throttle body |
| Starting: | Electric | Electric | Electric | Electric |
| Max Torque: | 134 Nm / 13.7 kgf-m / 98.8 ft. lbs @ 3500 rpm | 69Nm / 50.8 lb-ft @ 4750rpm | 12.3 Nm / 9 lb-ft @ 6500 rpm | 70 Nm / 51.63 lb-ft @ 6500 rpm |
| Transmission: | 6 Speed | 6 Speed dual clutch transmission | Honda V-Matic belt-converter, continuously variable automatic | 6 Speed, AQS Aprilia Quick Shift |
| Final Drive: | Belt | Chain | V-Belt | Chain, with drive ratio: 17/43 |
| Frame: | Mild steel, tubular frame; rectangular section backbone; stamped, cast and forged junctions, forged fender supports; MIG welded | Diamond, steel pipe | Tubular steel underbone | Tubular steel frame, engine used as a stressed member and aluminium plates |
| Front Suspension: | 41.3 mm telescopic, chrome dust covers | 41mm USD forks | 33mm Telescopic fork | 43mm Kayaba USD Off-road tuned fork, fully adjustable |
| Rear Suspension: | Hidden, horizontal-mounted, coil-over shock | Monoshock damper, Pro-Link swingarm | Twin shock | Kayaba Off-road tuned monoshock, fully adjustable, |
| Front Brakes: | 2x Discs 4 piston caliper | 2x 310mm hydraulic discs with radial 4-piston caliper | Single 256 mm disc, dual piston Nissen | 2 x 300 mm Floating disc. Brembo calipers |
| Rear Brakes: | Single disc 2 piston caliper | Single 240mm hydraulic disc with 1-piston caliper | Single 240 mm disc, single piston Nissen | Single 260 mm disc. Brembo caliper |
| Wheels: | Optional Style Type Mirror Polished Chrome, Bullet Hole Disc Cast Aluminum (front and rear) | Cast aluminium multi-spoked wheels | Cast aluminium | Cross-spoke wheels |
| Front Tyre: | 140/75R17 67V | 120/70-R17M/C (58H) | 120/70-15MC 56P | 21 in with inner tube |
| Rear Tyre: | 200/55R17 78V | 160/60-R15M/C (67H) | 140/70-14MC 68P | 18 in with inner tube |
| Seat Height: | Laden 635 mm / 25.0 in Unladen 690 mm / 27.1 in | 790 mm / 31.1 in | 780 mm / 30.7 in | 913 mm / 35.9 in |
| Wet Weight: | 329 kg / 725 lbs | 235 kg / 518 lbs | 164 kg / 361.6 lbs | 199 kg / 439 lbs |
| Fuel Capacity: | 18.9 Litres / 5.0 US gal | 13.2 Litres / 3.48 US gal | 11.7 Litres / 3.1 US gal | 18 Litres / 4.6 US gal |