Ghezzi Brian Ghezzi Brain Folgore (2004-) vs Buell / EBR Buell XB12R Firebolt (2009) vs Yamaha WR 250R (2019-20) vs Yamaha XVS 650 Drag Star (2000-02)
Comparison technical specifications
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| Make: | Ghezzi Brian | Buell / EBR | Yamaha | Yamaha |
| Model: | Ghezzi Brain Folgore | Buell XB12R Firebolt | WR 250R | XVS 650 Drag Star |
| Years: | 2004- | 2009 | 2019-20 | 2000-02 |
| Engine: | Four stroke, transverse 90° V-twin cylinder, light alloy push-rod, 2 valves per cylinder. | 45° V-Twin, four stroke, pushrod actuated overhead valve. hydraulic self-adjusting lifters, 2 valve per cylinder. | Four stroke, single cylinder, DOHC, 4 valve | Four stroke, 75°V-twin cylinder, SOHC, 2 valve per cylinder |
| Capacity: | 1064 cc / 64.9 cu-in | 1203 cc / 73 cu in | 249 cc / 15.2 cub in. | 649 cc / 39.6 cu-in |
| Bore x Stroke: | 92 x 80 mm | 88.9 x 96.8 mm | 77 x 53.6 mm | 81 x 63 mm |
| Cooling System: | Air cooled | Air cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 9.5:1 | 10.0:1 | 11.8:1 | 9.0:1 |
| Induction: | Weber Marelli electronic injection system | Ø49 mm downdraft DDFI II fuel injection | Electronic fuel injection | 28mm Mikuni downdraft-type carburetor |
| Starting: | Electric | Electric | Electric | Electric |
| Transmission: | 5 Speed | 5 Speed | 6 Speed, constant mesh | 5 Speed |
| Final Drive: | Shaft | Belt | Chain | Shaft |
| Front Suspension: | 50 mm Marzocchi inverted telescopic forks | Showa Ø43 mm inverted forks compression damping, rebound damping and spring preload adjustable | Inverted 46 mm fork, adjustable | Telescopic fork |
| Rear Suspension: | Box-section steel swingarm with Öhlins shock and rising-rate link | Showa coil-over monoshock, remote underseat reservoir and adjustable compression damping, rebound damping and spring preload, 127mm wheel travel | Swingarm, single shock, 46 mm, adjustable | Swingarm Monocross |
| Front Brakes: | 2x 420mm discs 4 piston calipers | ZTL type brake, 6 piston, fixed caliper, Ø375 mm single-sided, inside out, stainless steel, floating rotor | Hydraulic, single disc, 250 mm Ø | Single 298mm disc 2 piston calipers |
| Rear Brakes: | Single 220mm disc 4 piston calipers | Single Ø240 mm disc, 1 piston floating caliper | Hydraulic, single disc, 230 mm Ø | 200mm drum |
| Front Tyre: | 120/60-17 | 120/70 ZR17, Pirelli Diablo | 80/100 -21 | 130/90-18 |
| Rear Tyre: | 180/55-17 | 180/55 ZR17 Pirelli Diablo | 120/80 -18 | 170/80-15 |
| Fuel Capacity: | 16 Litres / 4.2 US gal | 14 L / 3.7 US gal | 7.6 Litres / 2 US gal | 16 Litres / 4.2 US gal |