Enduro Bikes
2027Beta RR Racing 4T 390
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The 2027 Beta RR Racing 4T 390 is a competitive enduro machine engineered for serious off-road riders seeking reliability and performance. Its 385cc four-stroke engine features advanced dual electronic injection, titanium valves, and liquid cooling for consistent power delivery across demanding terrain. Built for racers and experienced trail enthusiasts, this bike excels in technical cross-country and enduro competitions.
- Capacity
- 385.6 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 107.5 kg
- Seat height
- 950 mm
- Power
- Not on record
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What’s new for the 2027 Beta RR Racing 4T 390
vs the 2026| Spec | 2026 | 2027 |
|---|---|---|
| Front suspension | KYB hydraulic USD fork with 48mm shaft | 48 mm KYB closed-cartridge USD fork |
| Rear suspension | KYB monoshock with progressive compound lever | KYB monoshock, progressive linkage |
| Front brakes | Single disc. 2-piston floating calipers | Single 260 mm wave disc, 2-piston floating caliper |
| Rear brakes | Single disc. 1-piston floating caliper | Single 240 mm wave 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 usEngine
- 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
- Power
- Not on record - add it
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- 6-speed manual
- Final drive
- Chain
- Clutch
- Wet multi-disc
Dimensions & weight
- Wheelbase
- 1480 mm
- Overall length
- 2180 mm
- Overall width
- 830 mm
- Overall height
- 1270 mm
- Seat height
- 950 mm
- Dry weight
- 107.5 kg
- Fuel capacity
- 9.00 litres
- Ground clearance
- 335 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
- 48 mm KYB closed-cartridge USD fork
- Rear suspension
- KYB monoshock, progressive linkage
- Front wheel travel
- 300 mm
- Rear wheel travel
- 287 mm
Brakes & wheels
- Front brakes
- Single 260 mm wave disc, 2-piston floating caliper
- Front brakes diameter
- 260 mm
- Rear brakes
- Single 240 mm wave disc, 1-piston floating caliper
- Rear brakes diameter
- 240 mm
- 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 2027 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 2027 Beta RR Racing 4T 390 has a Gearbox of 6-speed.
How much does the Beta RR Racing 4T 390 weigh?
The 2027 Beta RR Racing 4T 390 has a Dry weight of 107.5 kg (237.0 pounds).
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