| YAMAHA YZ250 | ARCH MOTORCYCLE 1S |
|---|
| engine specs | |
| Type | |
|---|---|
| liquid-cooled 2-stroke reed-valve inducted | S&S Cycle T124 45-degree downdraft fuel-injected V-Twin engine |
| Displacement | |
| 249 cm3 | 2032 cm3 |
| Bore X Stroke | |
| 2.6x2.8 in OR 66 mm | - |
| Compression Ratio | |
| 8.9 – 10.6:1 | - |
| Torque | |
| - | 115.3/- lb-ft/RPM OR 156/- Nm/RPM |
| Fuel System | |
| Keihin PWK38S carburetor | EFI |
| transmission specs | |
| Gearbox | |
|---|---|
| 5 speed, manual | 6-speed |
| Clutch | |
| Multiplate wet clutch | Compact dry clutch |
| Final Drive | |
| O-ring chain | Chain |
| chassis specs | |
| Frame | |
|---|---|
| Aluminium semi-double-cradle | Tubular steel frame with CNC-machined aluminum subframe single-sided swingarm |
| Front Suspension | |
| 48mm Kayaba Speed-Sensitive System inverted fork fully adjustable, 11.8-in travel | Fully adjustable ARCH/Öhlins FGRT series fork |
| Rear Suspension | |
| Kayaba fully adjustable link monocross 315 mm (12.4 in.) travel | Fully adjustable ARCH/Öhlins rear shock with reservoir and hydraulic pre-load adjustment |
| Front Brake | |
| Hydraulic single disc brake, 250mm | Dual ISR 6-piston monobloc radial mount calipers with ISR floating dampened discs |
| Rear Brake | |
| Hydraulic single disc brake, 245mm | Single ISR 4-piston monobloc radial mount caliper with ISR semi-floating disc |
| dimension specs | |
| Overall Length | |
|---|---|
| 86 in OR 2184 mm | - |
| Overall Width | |
| 32.6 in OR 828 mm | - |
| Seat Height | |
| 39.3 in OR 998 mm | 31.5 in OR 800 mm |
| Ground Clearance | |
| 15.1 in OR 384 mm | - |
| Weight | |
| 227 lbs OR 103 kg | 563 lbs OR 255 kg |
| Fuel Capacity | |
| 2.1 gallons OR 7.9 L | 4.5 gallons OR 17.0 L |
| Wheelbase | |
| 58.3 in OR 1481 mm | 65.4 in OR 1661 mm |
| tyres specs | |
| Front | |
|---|---|
| 80/100-21 | 120/70-17 Michelin Power RS |
| Rear | |
| 110/90-19 | 240/45-17 Michelin Power RS |
