Buell / EBR Buell XB12R Firebolt (2009) vs Yamaha RD 350RR (1984) vs Yamaha WR 250R (2019-20) vs Yamaha RD 250R / RZ 250R (1984-85) vs Yamaha DT 125LC (1985)
Comparison technical specifications
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| Make: | Buell / EBR | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | Buell XB12R Firebolt | RD 350RR | WR 250R | RD 250R / RZ 250R | DT 125LC |
| Years: | 2009 | 1984 | 2019-20 | 1984-85 | 1985 |
| Engine: | 45° V-Twin, four stroke, pushrod actuated overhead valve. hydraulic self-adjusting lifters, 2 valve per cylinder. | Two stroke, parallel twin cylinder, YPVS | Four stroke, single cylinder, DOHC, 4 valve | Two stroke, parallel twin | Two stroke, single cylinder, reed-valve |
| Capacity: | 1203 cc / 73 cu in | 347 cc / 21.1 cu-in | 249 cc / 15.2 cub in. | 247 cc / 15.0 cu-in | 123 cc / 7.5 cu-in |
| Bore x Stroke: | 88.9 x 96.8 mm | 64 х 54 mm | 77 x 53.6 mm | 54 х 54 mm | 56 х 50 mm |
| Compression Ratio: | 10.0:1 | 6.2 :1 | 11.8:1 | 6.2 :1 | 6.8:1 |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Induction: | Ø49 mm downdraft DDFI II fuel injection | 2x 26mm Mikuni slide-needle carburetor | Electronic fuel injection | 2x Mikuni VM28 SC carburetor | Single 24 mm Mikuni VM26SS carburetor |
| Starting: | Electric | Kick | Electric | Kick | Kick |
| Transmission: | 5 Speed | 6 Speed | 6 Speed, constant mesh | 6 Speed | 6 speed |
| Final Drive: | Belt | Chain | Chain | Chain | Chain |
| Front Suspension: | Showa Ø43 mm inverted forks compression damping, rebound damping and spring preload adjustable | 35mm Telescopic forks air assistance and variable damping | Inverted 46 mm fork, adjustable | Telescopic forks | Telescopic Forks |
| Rear Suspension: | Showa coil-over monoshock, remote underseat reservoir and adjustable compression damping, rebound damping and spring preload, 127mm wheel travel | Rising rate Monocross 5-way preload | Swingarm, single shock, 46 mm, adjustable | Monocross | Monocross |
| Front Brakes: | ZTL type brake, 6 piston, fixed caliper, Ø375 mm single-sided, inside out, stainless steel, floating rotor | 2x 260mm disc 2 piston calipers | Hydraulic, single disc, 250 mm Ø | Single 267mm disc | Drum |
| Rear Brakes: | Single Ø240 mm disc, 1 piston floating caliper | Single 260mm disc 1 piston caliper | Hydraulic, single disc, 230 mm Ø | Drum | Drum |
| Front Tyre: | 120/70 ZR17, Pirelli Diablo | 90/90-18 51H | 80/100 -21 | 3.00-18 | 2.75-21 |
| Rear Tyre: | 180/55 ZR17 Pirelli Diablo | 110/80-18 58H | 120/80 -18 | 3.50-18 | 4.10-18 |
| Ground Clearance: | 127 mm / 5.0" | 165 mm / 6.4 in | 300 mm / 11.8 in. | 165 mm / 6.4 in | 285 mm / 11.0 in |
| Seat Height: | 775 mm / 30.5" | 790 mm / 31.1 in | 930 mm / 36.6 in | 785 mm / 30.9 in | 845 mm / 33.2 in |
| Fuel Capacity: | 14 L / 3.7 US gal | 17 Litres / 4.5 US gal | 7.6 Litres / 2 US gal | 16.5 Litres / 4.3 US gal | 10 Litres / 2.2 gal |