Aprilia Tuono 660 Factory (2025) vs Aprilia AF1 125 Sintesi Sport (1990) vs KTM 390 Duke (2024) vs Aprilia Tuareg 125 Wind (1990-)
Comparison technical specifications
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| Make: | Aprilia | Aprilia | KTM | Aprilia |
| Model: | Tuono 660 Factory | AF1 125 Sintesi Sport | 390 Duke | Tuareg 125 Wind |
| Years: | 2025 | 1990 | 2024 | 1990- |
| Engine: | Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder | Two stroke, single cylinder, light alloy, barrel with Gilnisil coating | Four stroke, single cylinder, DOHC with finger followers, 4 valves | Two stroke, single cylinder |
| Capacity: | 659 cc / 40.2 cu-in | 124.7 cc / 7.6 cu in | 398.7 cc / 24.3 cu-in | 124 cc / 7.6 cu in |
| Bore x Stroke: | 81 x 63.93 mm | 54 x 54.5 mm | 89 x 64 mm | 54 x 54 mm |
| Compression Ratio: | 13.5: 1 | 15.1:1 | 15.5:1 | |
| Cooling System: | Liquid cooled with radiator and water-oil heat exchanger | Liquid cooled | Liquid Cooled | Liquid cooled |
| Starting: | Electric | Electric | Electric | Kick |
| Max Power: | 105 hp / 73.5 kW @ 10500 rpm | 21.4 kW / 28.66 hp @10500 rpm | 33 kW / 44.3 hp | 18.6 kW / 25 hp @ 9000 rpm |
| Transmission: | 6 Speed, Aprilia Quick Shift (AQS) System up and down (available as optional accessory) | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain, with drive ratio: 17/43 | Chain | Chain 520-X Ring | Chain |
| Front Suspension: | 43mm ?hlins NIX 30 fork, spring preload, rebound and compression damping adjustable | Telescopic fork, Ø 38 mm | 43mm WP APEX 43 | Telescopic fork |
| Rear Suspension: | ?hlins STX rear shock, spring preload, rebound and compression damping adjustable | Aprilia progressive mono shock system, Sebach | WP APEX - Monoshock | Mono shock |
| Front Brakes: | 2x 320mm Brembo radial calipers with 4 horizontally opposed 32 mm pistons. Radial pump and metal braided brake hose | Single Ø 320 mm floating disc, 4 piston caliper, Brembo | Single 320 mm disc, 4 piston radial fixed caliper | Single disc |
| Rear Brakes: | Single 220mm disc; Brembo caliper with two 34 mm separate pistons. Master cylinder with separate reservoir and metal braided hose Multimap ABS (Cornering ABS available as optional accessory) | Single Ø 240mm disc, 2 piston caliper | Single 240 mm disc, 2 piston floating caliper | Drum |
| Front Tyre: | 120/70 ZR 17 | 100/80-17 | 2.75-21 | |
| Rear Tyre: | 180/55 ZR 17 | 130/70-17 | 4.60-17 | |
| Fuel Capacity: | 15 Litres / 4.0 US gal | 20 Litres / 5.3 US gal | 18 Litres / 7.6 US gal |