Suzuki GS 850GL (1980-88) vs Aprilia Tuono 660 Factory (2025)
Comparison technical specifications
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| Make: | Suzuki | Aprilia |
| Model: | GS 850GL | Tuono 660 Factory |
| Years: | 1980-88 | 2025 |
| Engine: | Four stroke, transverse four cylinders, DOHC, 2 valve per cylinder. | Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder |
| Capacity: | 843 cc / 51.4 cu in | 659 cc / 40.2 cu-in |
| Bore x Stroke: | 69 х 56.4mm | 81 x 63.93 mm |
| Cooling System: | Air cooled | Liquid cooled with radiator and water-oil heat exchanger |
| Compression Ratio: | 8.8:1 | 13.5: 1 |
| Induction: | 4 x mm Mikuni carburetors | Airbox with front air intake. 2 x 52 mm throttle bodies, Ride-By-Wire management |
| Starting: | Electric & kick | Electric |
| Max Power: | 57.1 kW / 77.6 hp @ 9.000 rpm | 105 hp / 73.5 kW @ 10500 rpm |
| Max Torque: | 65 Nm / 6.6 kgf-m 47.9 lb-ft @ 7.500 rpm | 68 NM / 50.2 lb-ft @ 8500 rpm |
| Transmission: | 5 Speed | 6 Speed, Aprilia Quick Shift (AQS) System up and down (available as optional accessory) |
| Final Drive: | Shaft | Chain, with drive ratio: 17/43 |
| Front Suspension: | Telescopic forks, 3-way adjustable spring preload | 43mm ?hlins NIX 30 fork, spring preload, rebound and compression damping adjustable |
| Rear Suspension: | Dual shocks, 2-way preload and 4-way damping adjustments | ?hlins STX rear shock, spring preload, rebound and compression damping adjustable |
| Front Brakes: | 2 x 275mm Discs | 2x 320mm Brembo radial calipers with 4 horizontally opposed 32 mm pistons. Radial pump and metal braided brake hose |
| Rear Brakes: | Single 275mm disc | 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) |
| Front Tyre: | 3.50-19 | 120/70 ZR 17 |
| Rear Tyre: | 4.50-17 | 180/55 ZR 17 |
| Seat Height: | 785 mm / 30.9 in | 822 mm / 32.3 in |
| Wet Weight: | 253 kg / 557 lbs | 181 kg / 399 lbs |
| Fuel Capacity: | 22 Litres / 5.8 US gal / 4.8 Imp gal | 15 Litres / 4.0 US gal |