Back to Bike FinderYears: 2024 · 2023 · 2021
Beta RR 4T 390
2024Off-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 floating calipers
Rear brakes
Single disc. single-piston floating caliper

Overview

Introducing the 2024 Beta RR 4T 390, a remarkable entry in the world of enduro-offroad motorcycles that perfectly balances power, agility, and innovation. Positioned for riders who crave performance both on and off the beaten path, this model from Beta combines advanced engineering with a passion for adventure. With its striking red, white, and black color scheme, it’s not just a machine, but a statement of intent—a bike designed to conquer challenging terrains and provide an exhilarating riding experience. At the heart of the Beta RR 4T 390 lies a robust 385.6cc engine, featuring titanium valves and a high compression ratio of 12.5:1 that delivers impressive power and torque. The Elldor dual electronic injection system ensures precise fuel delivery, optimizing performance across various riding conditions. Coupled with a 6-speed gearbox, the bike excels in acceleration and responsiveness, making it equally at home on tight trails or open dirt roads. The wet multi-disc clutch gives you smooth power transfer, while the liquid cooling system maintains optimal engine temperature, allowing you to push the limits without overheating. Riders will appreciate the bike’s agile handling, aided by a lightweight frame that weighs in at just 107.5 kg (237 lbs), providing a nimble ride that enhances confidence on technical routes. The 2024 Beta RR 4T 390 is packed with features that enhance both comfort and performance. Its Molybdenum steel frame provides remarkable strength while the hydraulic USD front fork with a 48 mm shaft offers 295 mm of travel, ensuring you can tackle the roughest trails with ease. The monoshock rear suspension with progressive compound lever further enhances ride quality, providing 290 mm of travel to absorb bumps and ruts. The bike is equipped with powerful braking systems, featuring a 260 mm front disc and a 240 mm rear disc, ensuring reliable stopping power when you need it most. With a fuel capacity of 9 liters (2.38 US gallons) and an impressive fuel consumption of 3.89 litres/100 km (60.47 mpg), this bike is ready for extended adventures without frequent stops. In summary, the 2024 Beta RR 4T 390 is a testament to Beta's commitment to delivering high-performance motorcycles that cater to serious off-road enthusiasts. With its powerful engine, advanced features, and robust construction, this bike is poised to elevate your riding adventures to new heights. Whether you’re navigating tight trails or cruising through open landscapes, the RR 4T 390 promises an exhilarating ride every time.

Pros

  • Lightweight and Agile: At just 107.5 kg, the RR 4T 390 offers exceptional maneuverability and control on challenging terrains.
  • Powerful Engine Performance: The combination of titanium valves and advanced fuel injection technology delivers impressive power and efficiency.
  • Advanced Suspension System: With high travel on both front and rear suspension, riders can confidently tackle rough trails with superior comfort.

Cons

  • Seat Height: With a seat height of 940 mm (37 inches), it may be challenging for shorter riders to manage, especially in tricky situations.
  • Limited Fuel Capacity: Although efficient, the 9-liter fuel tank may necessitate more frequent refueling on longer rides.
  • Price Point: As a premium enduro option, the RR 4T 390 might be on the higher end of the budget spectrum for entry-level riders.

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, 42mm
Bore X Stroke
88.0 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.
Oil Capacity
1.60 litres (1.69 US quarts)
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 floating caliper
Front Brakes
Single disc. 2-piston floating calipers
Rear Suspension
Monoshock with progressive compound lever
Front Suspension
Hydraulic USD fork with 48 mm shaft
Rear Wheel Travel
290 mm (11.4 inches)
Front Wheel Travel
295 mm (11.6 inches)
Rear Brakes Diameter
240 mm (9.4 inches)
Front Brakes Diameter
260 mm (10.2 inches)

Available colors

Red/white/black