Gilera SP01 125 (1988-89) vs Gilera ER 125 (1986-) vs Indian Chieftain Elite Limited (2023) vs Ducati 851 SP2 (1990) vs Triumph Speed 400 (2024)
Comparison technical specifications
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| Make: | Gilera | Gilera | Indian | Ducati | Triumph |
| Model: | SP01 125 | ER 125 | Chieftain Elite Limited | 851 SP2 | Speed 400 |
| Years: | 1988-89 | 1986- | 2023 | 1990 | 2024 |
| Engine: | Two stroke, single cylinder, reed valve | Two stroke, single cylinder, | Thunder Stroke 116, 49˚ V-Twin | Four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven | Four stroke, DOHC, single cylinder, 4 valves |
| Capacity: | 124 cc / 7.6 cu-in | 124 cc / 7.6 cu-in | 1890 cc / 116 cu-in | 888 cc / 54.2 cu in | 398 cc / 24.3 cu-in |
| Bore x Stroke: | 56 x 50.5 mm | 56 x 50 mm | 103.2 x 113mm | 92 x 64 mm | 89.0 x 64.0mm |
| Cooling System: | Liquid cooled | Liquid cooled, | Air / Oil cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 12.5;1 | 13.4:1 | 11.0:1 | 10.7:1 | 12.1:1 |
| Induction: | 32mm Dell'Orto carburetors | Dell'Orto premix carburetor | Electronic fuel injection, closed loop, 54 mm bore | Weber I.A.W. CPU P7 electronic fuel injection. 2 x 50mm throttle bodies | Bosch ride-by-wire EFI |
| Starting: | Electric | Kick | Electric | Electric | Electric |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 6 Speed | 6-Speed |
| Final Drive: | Chain | Chain | Belt, 152 tooth | Chain | X-ring chain |
| Front Suspension: | Telescopic forks | Telescopic forks | 46mm Telescopic forks | 42 mm Öhlins FG 9050 upside-down fork with rebound compression damping adjustable | 43mm Showa Big Piston, non-adjustable inverted fork |
| Rear Suspension: | Swing arm gas single shock | Alloy swing arm adjustable single shock | Single shock with air adjust | Öhlins DU 8070 single shock with preload and damping adjust | Single shock, fixed damping with the shock adjustable piggy-back reservior |
| Front Brakes: | Single disc | Single 240mm disc | 2 x 300mm Floating rotor 4 piston calipers | 2 x 320 mm Disc, 4 piston calipers | Single 300 mm disc with radially mounted 4-piston caliper |
| Rear Brakes: | Single disc | Drum | Single 300mm floating rotor 2 piston calipers | Single 245 mm disc, 2 piston caliper | Single 230 mm disc with floating caliper |
| Front Tyre: | 2.75-21 | 2.75-21 | 130/60B19 61H | 120/70 x 17 | 110/70 x R17 |
| Rear Tyre: | 4.10-17 | 4.60-17 | 180/60R16 80H | 180/55 x 17 | 150/60 x R17 |
| Fuel Capacity: | 15 Litres / 3.9 US gal | 20.8 Litres / 5.5 US gal | 20 L / 5.3 US gal / 4.4 Imp gal | 13 Litres / 3.43 US gal |