Comparison of TM Racing 450Fi 4T MX and TM Racing SMR 450 F a.e. [S]ave
| Attribute |  TM Racing 450Fi 4T MX × |  TM Racing SMR 450 F a.e. × |
|---|---|---|
| General | ||
| Production from (year) | 2017 | 2005 |
| Make | TM Racing | TM Racing |
| Model | TM Racing 450Fi 4T MX | TM Racing SMR 450 F a.e. |
| Category | Cross / motocross | Super motard |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Valves per cylinder | 4 | 4 |
| Fuel system | Injection. 44 mm throttle body | Carburettor. Mikuni TDMR 40 |
| Engine details | Titanium valves | - |
| Displacement (cm³) | 449.2 | 449 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 95 | 95 |
| Stroke (mm) | 63.4 | 63.4 |
| Gearbox | 5-speed | 5-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Double Overhead Cams/Twin Cam (DOHC) |
| Driveline | Straight – tooth gear | - |
| Ignition | Kokusan CDI Electronic with variable advance | Koukusan CDI electronic w/variable advance. |
| Clutch | Multiuple-disk in oil-bath with hydaulic control | Multiple-disk in oil-bath with hydraulic control |
| Lubrication system | Dry sump with double rotor pump | Dry sump with double rotor pump |
| Chassis | ||
| Front suspension | Kayaba USD | Kayaba/Paioli USD (optional OIhlins) |
| Rear suspension | TM Racing | Ohlins |
| Front brakes | Single disc. Wave disc. | Single disc |
| Rear brakes | Single disc. Wave disc. | Single disc |
| Diameter (mm) | 245 | 240 |
| Frame type | Perimetral aluminium section | CrMo. Perimetral oval section. |
| Front tyre | 90/90-X21 | 120/70-ZR17 |
| Rear tyre | 110/90-X19 | 150/60-ZR17 |
| Other | ||
| Starter | Electric & kick | Electric & kick |
| Color options |
| - |
| Performance | ||
| Fuel capacity (l) | 8.2 | 8 |
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