Triumph Bonneville T100 (2017-18) vs Triumph Bonneville T120 Ace (2018) vs Yamaha XS 850G (1980)
Comparison technical specifications
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| Make: | Triumph | Triumph | Yamaha |
| Model: | Bonneville T100 | Bonneville T120 Ace | XS 850G |
| Years: | 2017-18 | 2018 | 1980 |
| Engine: | Four stroke, 270° Crank angle parallel twin, SOHC, 8 valves | Four stoke, parallel twin, 270o crank, SOHC 4 valves per cylinder | Four stroke, transverse three cylinder, DOHC, 2 valves per cylinder. |
| Capacity: | 900 cc / 54.9 cu in | 1198 cc / 73.1 cu in | 826 cc / 50.4 cu in |
| Bore x Stroke: | 84.6 x 80 mm | 97.6 x 80 mm | 71.5 x 68.6 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 10.55:1 | 10.0:1 | 9.2:1 |
| Induction: | Multipoint sequential electronic fuel injection | Multipoint sequential electronic fuel injection | 3 x 34mm Hitachi carburetors |
| Ignition: | Digital | Digital | Battery powered triggered |
| Starting: | Electric | Electric | Electric |
| Max Power: | 40.5 kW / 54 hp @ 5900 rpm | 59 kW / 80 hp @ 6550 rpm | 57.7 kW / 79 hp @ 8500 rpm |
| Transmission: | 5 Speed | 6-Speed | 5 Speed |
| Final Drive: | Chain, X-ring | Chain, X-ring | Shaft |
| Front Suspension: | 41mm Kayaba cartridge forks | Kayaba 41 mm forks | Air assisted telescopic forks, 175mm wheel travel. |
| Front Wheel Travel: | 120 mm / 4.7 in | 120 mm / 4.7 in | 175 mm / 6.9" |
| Rear Suspension: | Twin sided swingarm, Kayaba spring twin shocks with adjustable preload | Kayaba twin shocks with adjustable preload | Swing arm 4-way adjustable damping, 99 wheel travel |
| Rear Wheel Travel: | 120 mm / 4.7 in | 120 mm / 4.7 in | 99 mm / 3.9" |
| Front Brakes: | Single 310 mm disc, 2 piston floating calipers, Nissin | 2 x 310 mm discs, 2 piston floating Nissin calipers | 2 x 267mm Discs, 1 piston calipers |
| Rear Brakes: | Single 255 mm disc, 2 piston floating calipers, Nissin | Single 255 mm disc, 2 piston floating Nissin caliper | Single 267mm disc, 1 piston caliper |
| Front Tyre: | 100/90-R18 | 100/90-18 | 3.25-19 |
| Rear Tyre: | 150/70-R17 | 150/70 R17 | 4.00-18 |
| Fuel Capacity: | 14.5 Litres / 3.8 US gal / 3.2 Imp gal | 14.4 Litres / 3.8 US gal / 3.2 Imp gal | 24 Litres / 6.3 US gal |