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Beta RR 4T 390
2023Off-road

Beta RR 4T 390

Key specifications

Engine
386 cc
Weight
108 kg
Fuel type
petrol
Fuel capacity
2.4 L
Transmission
6-speed
Seat height
37 mm
Front brakes
Single disc. 2-piston calipers
Rear brakes
Single disc. Single-piston caliper

Overview

Introducing the 2023 Beta RR 4T 390, a formidable contender in the Enduro-offroad motorcycle category. Beta, a brand revered for its commitment to performance and innovation, has designed this machine to cater to both seasoned riders and newcomers eager to tackle rugged terrains. With its striking red, white, and black color scheme, the RR 4T 390 not only looks the part but is engineered to deliver an exhilarating riding experience that stands out in the competitive off-road market. At the heart of the Beta RR 4T 390 lies a robust 385.6 ccm engine, equipped with titanium valves for enhanced durability and performance. With a compression ratio of 12.5:1, this powerful engine produces impressive torque and responsiveness, ensuring a thrilling ride on any trail. The Elldor dual electronic fuel injection system guarantees optimal fuel delivery, enhancing efficiency and reducing emissions. Riders will appreciate the 6-speed gearbox that offers smooth shifting and allows for seamless transitions between challenging terrains. With a fuel consumption rate of just 3.89 liters per 100 km, the RR 4T 390 proves to be both powerful and economical, making it an excellent choice for long adventures. Beyond its impressive engine, the RR 4T 390 boasts a robust chassis and advanced suspension system designed to handle the rigors of off-road riding. The molybdenum steel frame, with its double cradle split design, provides exceptional rigidity and stability, while the hydraulic USD fork with a 48 mm shaft ensures precise handling and responsiveness. Riders will appreciate the monoshock rear suspension with a progressive compound lever, which absorbs bumps and enhances comfort during long rides. The combination of a lightweight design at just 107.5 kg (237 pounds) and a generous ground clearance of 320 mm (12.6 inches) allows riders to navigate obstacles with confidence. **

Pros

  • Powerful Engine Performance: The 385.6 ccm engine with titanium valves delivers excellent torque and efficiency, making it perfect for off-road adventures.
  • Advanced Suspension: The premium hydraulic USD fork and monoshock rear suspension provide superior handling and comfort on rugged trails.
  • Lightweight and Agile: Weighing only 107.5 kg, the RR 4T 390 offers nimble handling and easy maneuverability, ideal for technical off-road riding.

Cons

  • Seat Height: The seat height of 940 mm may be challenging for shorter riders, potentially affecting their comfort and control.
  • Limited Fuel Capacity: With a fuel tank of 9 liters, longer excursions may require additional planning for refueling.
  • Market Competition: While the RR 4T 390 excels in many areas, it faces stiff competition from other well-established brands in the enduro segment, making it essential for riders to consider their options carefully.

Technical details

Source specification data

Make
Beta
Model
RR 4T 390
Category
Enduro-offroad
Starter
Electric
Color Options
Red/white/black
Clutch
Wet multi-disc
Gearbox
6-speed
Ignition
Kokusan
Engine Type
Single cylinder, four-stroke
Fuel System
Injection
.
Elldor
dual electronic injection
Bore X Stroke
89.0 x 63.4 mm (3.5 x 2.5 inches)
Compression
12.5:1
Displacement
385.6 ccm (23.53 cubic inches)
Cooling System
Liquid
Engine Details
Titanium valves
Fuel Consumption
3.89 litres/100 km (25.7 km/l or 60.47 mpg)
Greenhouse Gases
O2
g/km. (
O2
-
Carbon
dioxide emission)
Lubrication System
2 oil pumps
Valves Per Cylinder
4
Transmission Type Final Drive
Chain (final drive)
Dry Weight
107.5 kg (237.0 pounds)
Seat Height
940 mm (37.0 inches) If adjustable, lowest setting.
Fuel Capacity
9.00 litres (2.38 US gallons)
Overall Width
815 mm (32.1 inches)
Overall Height
1270 mm (50.0 inches)
Overall Length
2180 mm (85.8 inches)
Ground Clearance
320 mm (12.6 inches)
Reserve Fuel Capacity
2.30 litres (0.61 US gallons)
Wheels
Wire spoked
Rear Tyre
140/80-18
Frame Type
Molybdenum steel with double cradle split above the exhaust port
Front Tyre
90/90-21
Rear Brakes
Single disc. Single-piston caliper
Front Brakes
Single disc. 2-piston calipers
Rear Suspension
Monoshock with progressive compound lever
Front Suspension
Hydraulic USD fork with 48 mm shaft
Rear Brakes Diameter
240 mm (9.4 inches)
Front Brakes Diameter
260 mm (10.2 inches)

Available colors

Red/white/black