Enduro Bikes
2025Beta RR Racing 4T 390
39 fields on record
The 2025 Beta RR Racing 4T 390 is a lightweight enduro motorcycle designed for serious off-road enthusiasts and technical trail riders. Known for its agile handling and compact dimensions, this bike excels in demanding terrain with its responsive single-disc braking system and knobby tire setup. Its 107.5 kg dry weight and 950 mm seat height make it accessible for riders seeking a capable, maneuverable machine for cross-country adventures.
- Capacity
- 385.6 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 107.5 kg
- Seat height
- 950 mm
- Power
- Not on record
Know it? Add it →
What’s new for the 2025 Beta RR Racing 4T 390
vs the 2024| Spec | 2024 | 2025 |
|---|---|---|
| Seat height | 940 mm (37.0 inches) | 950 mm (37.4 inches) |
| Front brakes | Single disc. 2-piston calipers | Single disc. 2-piston floating calipers |
| Rear brakes | Single disc. 1-piston calipers | Single disc. 1-piston floating caliper |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for serious enduro racing and technical trail riding, with no concession to street comfort or long-distance touring.
- Built for
- A razor-sharp, high-revving single-cylinder enduro weapon with premium KYB suspension and titanium valves, designed to attack trails and technical sections with minimal weight and maximum control.
- Not ideal for
- This bike is not for riders seeking a comfortable commuter, a passenger-friendly ride, or a relaxed long-distance tourer.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usRange and running costs
Worked out in your browser - nothing is sent to usBased on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.
Engine
- Capacity
- 385.6 ccm
- Engine type
- Single, four-stroke
- Fuel consumption
- 3.90 litres/100 km (25.6 km/l)
- Bore x stroke
- 88.0 x 63.4 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Kokusan
- Valves per cylinder
- 4
- Lubrication system
- 2 oil pumps
- Spark plugs
- NGK LKAR 8A-9
- Power
- Not on record - add it
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc
Dimensions & weight
- Wheelbase
- 1490 mm
- Overall length
- 2180 mm
- Overall width
- 815 mm
- Overall height
- 1270 mm
- Seat height
- 950 mm
- Dry weight
- 107.5 kg
- Fuel capacity
- 9.00 litres
- Ground clearance
- 320 mm
- Oil capacity
- 1.60 litres
- Reserve fuel capacity
- 2.30 litres
Chassis & suspension
- Frame
- Molybdenum steel with double cradle split above the exhaust port
- Front suspension
- KYB hydraulic USD fork with 48mm shaft
- Rear suspension
- KYB monoshock with progressive compound lever
- Front wheel travel
- 295 mm
- Rear wheel travel
- 290 mm
Brakes & wheels
- Front brakes
- Single disc. 2-piston floating calipers
- Front brakes diameter
- 255 mm
- Rear brakes
- Single disc. 1-piston floating caliper
- Front tyre
- 90/90-21
- Rear tyre
- 140/80-18
Other
- Color options
- Red/blue/white
- Comments
- Traction control.
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 | 2023 | 2024 | 2025 | 2026 | 2027 |
|---|---|---|---|---|---|
| Capacity | 385 cc | 385 cc | 386 cc | 386 cc | 386 cc |
| Dry weight | 108 kg | 108 kg | 108 kg | 108 kg | 108 kg |
| Seat height | 940 mm | 940 mm | 950 mm | 950 mm | 950 mm |
| Fuel capacity | 9 L | 9 L | 9 L | 9 L | 9 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 Beta RR Racing 4T 390?
The 2025 Beta RR Racing 4T 390 has a Capacity of 385.6 ccm (23.53 cubic inches).
How many gears does the Beta RR Racing 4T 390 have?
The 2025 Beta RR Racing 4T 390 has a Gearbox of 6-speed.
How much does the Beta RR Racing 4T 390 weigh?
The 2025 Beta RR Racing 4T 390 has a Dry weight of 107.5 kg (237.0 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.