14 August. Friday 2026
Beta RR 4T 390 - 2023 Specifications and Reviews
The 2023 Beta RR 4T 390 is a lightweight enduro machine designed for off-road enthusiasts seeking reliable trail performance. Its 386cc liquid-cooled four-stroke engine with titanium valves and dual electronic fuel injection delivers responsive power across varied terrain. Best known for nimble handling and durability, it suits riders prioritizing agility and dependability over raw horsepower.
General information | |
| Category | Enduro / offroad |
| Year | 2023 |
| Model | Beta RR 4T 390 |
Engine and Transmission Specifications | |
| Greenhouse gases | 90.2 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel consumption | 3.89 litres/100 km (25.7 km/l or 60.47 mpg) |
| Clutch | Wet multi-disc |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | 2 oil pumps |
| Ignition | Kokusan |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. Elldor dual electronic injection |
| Valves per Cylinder | 4 |
| Bore x Stroke | 89.0 x 63.4 mm (3.5 x 2.5 inches) |
| Compression | 12.5:1 |
| Engine details | Titanium valves |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 385.6 ccm (23.53 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Wheels | Wire spoked |
| Rear brakes | Single disc. Single-piston caliper |
| Diameter | 260 mm (10.2 inches) |
| Front brakes | Single disc. 2-piston calipers |
| Rear tire | 140/80-18 |
| Front tire | 90/90-21 |
| Rear Suspension | Monoshock with progressive compound lever |
| Front Suspension | Hydraulic USD fork with 48 mm shaft |
| Frame type | Molybdenum steel with double cradle split above the exhaust port |
| | |
Physical measures and capacities | |
| Reserve fuel capacity | 2.30 litres (0.61 US gallons) |
| Fuel capacity | 9.00 litres (2.38 US gallons) |
| Wheelbase | 1490 mm (58.7 inches) |
| Ground clearance | 320 mm (12.6 inches) |
| Overall width | 815 mm (32.1 inches) |
| Overall length | 2180 mm (85.8 inches) |
| Overall height | 1270 mm (50.0 inches) |
| Seat height | 940 mm (37.0 inches) If adjustable, lowest setting. |
| Dry weight | 107.5 kg (237.0 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Starter | Electric |
| Color options | Red/white/Black |
Performance Profile & Rider Fit
Best For
Track25%
City20%
Cornering55%
Daily Riding20%
Touring15%
Passenger5%
Rider Profile
| Best For | This bike suits confident intermediate to expert off-road riders who are comfortable with a tall seat height and aggressive enduro geometry. |
| Purpose | It's built specifically for technical enduro and trail riding rather than road use or commuting. |
| Rider Fit | The tall 940mm seat height and lightweight but tall-standing chassis favor taller riders with good fitness and standing-riding endurance. |
| Character | It has the character of a lightweight, high-revving dirt weapon that rewards aggressive, active riding over technical terrain. |
| Not Ideal For | This is not the bike for riders wanting a comfortable, low, passenger-friendly machine for daily road commuting or long highway touring. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2023 Beta RR 4T 390 is a powerful and capable off-road motorcycle that is sure to impress riders of all skill levels. With a 390cc engine, this bike has plenty of power to tackle even the toughest trails. Its lightweight design and agile handling make it easy to maneuver through tight corners and technical terrain. The bike also features top-of-the-line suspension and brakes, providing excellent control and confidence for riders. Overall, the 2023 Beta RR 4T 390 is a fantastic choice for anyone looking for a high-performance off-road motorcycle. In addition to its impressive performance, the 2023 Beta RR 4T 390 also boasts a sleek and stylish design. Its modern aesthetics are sure to turn heads on the trails, and its durable construction ensures that it can withstand the rigors of off-road riding. The bike also comes equipped with all the necessary features for a great riding experience, including a comfortable seat, easy-to-read gauges, and convenient storage options. Whether you're a seasoned off-road rider or just getting started, the 2023 Beta RR 4T 390 is a top-notch choice for anyone looking for a reliable and capable motorcycle.Add a Comment
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