
Beta RR 4T 390
Key specifications
Overview
Introducing the 2021 Beta RR 4T 390, a remarkable contender in the competitive world of enduro-offroad motorcycles. Designed for both seasoned riders and adventurous newcomers, this bike blends performance, agility, and cutting-edge technology to tackle the most challenging terrains. With its robust styling and striking red, white, and black color options, the RR 4T 390 not only performs exceptionally but also turns heads on the trails. Whether you’re racing through muddy paths or navigating rocky inclines, this motorcycle is engineered to provide an exhilarating experience that embodies the spirit of adventure. At the heart of the Beta RR 4T 390 is a powerful 385.4cc single-cylinder, four-stroke engine that delivers impressive torque and acceleration, allowing riders to conquer steep hills and technical sections with ease. With a compression ratio of 12.5:1 and a sophisticated Synerject dual electronic fuel injection system, this engine ensures smooth power delivery and optimal fuel efficiency. The 6-speed gearbox, paired with a wet multi-disc clutch, allows for seamless gear transitions, enhancing the riding experience. Thanks to its liquid cooling system, the engine maintains optimal performance even during extended rides in challenging environments, making it a reliable companion for long off-road adventures. The Beta RR 4T 390 is packed with features that elevate its performance and rider comfort. The sturdy molybdenum steel frame provides excellent stability and durability, while the hydraulic USD front fork with a generous 295mm travel ensures that the bike can absorb the toughest bumps and dips. The rear monoshock suspension, with its progressive compound lever, complements the front, delivering a balanced ride that instills confidence on any surface. With a ground clearance of 320mm and a lightweight frame tipping the scales at just 107.5 kg (237 pounds), this bike offers remarkable agility and maneuverability, making it a joy to ride in tight trails and rugged landscapes. **
Pros
- Impressive Power-to-Weight Ratio: The lightweight design combined with a powerful engine ensures swift acceleration and agile handling, perfect for off-road challenges.
- Advanced Suspension System: The high-quality suspension components provide excellent travel and dampening, allowing for smooth rides over rough terrain.
- User-Friendly Technology: Features like electric start and variable ignition timing enhance the overall riding experience, making it accessible for riders of all skill levels.
Cons
- Seat Height: At 940mm, the seat might be a challenge for shorter riders, potentially affecting comfort and confidence on the bike.
- Fuel Capacity: With a fuel tank of 9.00 liters (2.38 gallons), longer rides may require additional planning for refueling, especially on remote trails.
- Limited Color Options: While the red, white, and black aesthetic is striking, some riders may desire more customization options to reflect their personal style.
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
- C
- -
- I
- without trembler with variable ignition timing,
- Kokusan
- type.
- Fuel System
- Carburettor
- .
- Synerject
- dual electronic injection
- Bore X Stroke
- 88.0 x 63.4 mm (3.5 x 2.5 inches)
- Compression
- 12.5:1
- Displacement
- 385.4 ccm (23.52 cubic inches)
- Cooling System
- Liquid
- Engine Details
- Single cylinder, four-stroke
- Lubrication System
- 2 oil pumps
- Transmission Type Final Drive
- Chain
- 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 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
- 3.89 litres (1.03 gallons)
- 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
- Front Brakes
- Single disc
- Rear Suspension
- Monoshock with progressive compound lever
- Front Suspension
- Hydraulic USD fork with ø48mm shaft
- Rear Wheel Travel
- 290 mm (11.4 inches)
- Front Wheel Travel
- 295 mm (11.6 inches)