Supermoto
2025Access Xtreme Supermoto 450 EFI
31 fields on record
The 2025 Access Xtreme Supermoto 450 EFI is a ATV for riders who want stable, go-anywhere fun on four wheels. Its 449cc liquid-cooled single keeps things simple and dependable, with an 870 mm seat, a 216 kg dry weight and a 14.8-litre tank.
- Capacity
- 448.8 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 216.0 kg
- Seat height
- 870 mm
- Power
- 44.9 HP (33.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as a sporty, single-cylinder off-road quad intended for recreational trail riding and rough-terrain fun rather than street or highway use.
- Built for
- The 450cc liquid-cooled single with fuel injection and reverse gear gives it torquey, accessible power suited to playful off-road maneuvering rather than outright speed.
- Not ideal for
- This is not a suitable choice for anyone wanting a road-legal supermoto motorcycle, highway touring, or passenger-carrying comfort.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 448.8 ccm
- Power
- 44.9 HP (33.0 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.2079 HP/kg (dry)
- Compression
- 11.8:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- 16-BIT ECU
- Valves per cylinder
- 4
- Lubrication system
- Wet sump, oil pump
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
Dimensions & weight
- Wheelbase
- 1270 mm
- Overall length
- 1870 mm
- Overall width
- 1230 mm
- Overall height
- 1025 mm
- Seat height
- 870 mm
- Dry weight
- 216.0 kg
- Fuel capacity
- 14.80 litres
- Ground clearance
- 120 mm
Chassis & suspension
- Front suspension
- Dual A-Arm
- Rear suspension
- Swingarm
Brakes & wheels
- Front brakes
- Double disc
- Rear brakes
- Single disc
- Front tyre
- 165/70-10
- Rear tyre
- 225/40-9
Other
- Color options
- Black, grey
- Comments
- Model id: SP450SM EFI.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2025 | 2026 |
|---|---|---|
| Capacity | 449 cc | 449 cc |
| Dry weight | 216 kg | 216 kg |
| Seat height | 870 mm | 870 mm |
| Fuel capacity | 14.8 L | 14.8 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Access Xtreme Supermoto 450 EFI?
The 2025 Access Xtreme Supermoto 450 EFI has a Capacity of 448.8 ccm (27.39 cubic inches).
What engine power does the Access Xtreme Supermoto 450 EFI have?
The 2025 Access Xtreme Supermoto 450 EFI has a Power of 44.9 HP (33.0 kW).
How many gears does the Access Xtreme Supermoto 450 EFI have?
The 2025 Access Xtreme Supermoto 450 EFI has a Gearbox of 5-speed.
How much does the Access Xtreme Supermoto 450 EFI weigh?
The 2025 Access Xtreme Supermoto 450 EFI has a Dry weight of 216.0 kg (476.2 pounds).
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