Beta RR 4T 390 2021 - Specifications & Review

RR 4T 390

Article Complete Info

Articleid584465
CategoryEnduro-offroad
MakeBeta
ModelRR 4T 390
Year2021

Chassis, Suspension, Brakes & Wheels

FrametypeMolybdenum steel with double cradle split above the exhaust port
FrontbrakesSingle disc
FrontsuspensionHydraulic USD fork with ø48mm shaft
Fronttyre90/90-21
Frontwheeltravel295 mm (11.6 inches)
RearbrakesSingle disc
RearsuspensionMonoshock with progressive compound lever
Reartyre140/80-18
Rearwheeltravel290 mm (11.4 inches)

Engine & Transmission

Borexstroke88.0 x 63.4 mm (3.5 x 2.5 inches)
ClutchWet multi-disc
Compression12.5:1
CoolingsystemLiquid
Displacement385.4 ccm (23.52 cubic inches)
EnginedetailsSingle cylinder, four-stroke
FuelsystemCarburettor. Synerject dual electronic injection
Gearbox6-speed
IgnitionDC-CDI without trembler with variable ignition timing, Kokusan type.
Lubricationsystem2 oil pumps
TransmissiontypefinaldriveChain

Other Specifications

ColoroptionsRed/white/black
StarterElectric

Physical Measures & Capacities

Dryweight107.5 kg (237.0 pounds)
Fuelcapacity9.00 litres (2.38 gallons)
Groundclearance320 mm (12.6 inches)
Overallheight1270 mm (50.0 inches)
Overalllength2180 mm (85.8 inches)
Overallwidth815 mm (32.1 inches)
Reservefuelcapacity3.89 litres (1.03 gallons)
Seatheight940 mm (37.0 inches) If adjustable, lowest setting.

About Beta RR 4T 390 2021

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:

  1. Impressive Power-to-Weight Ratio: The lightweight design combined with a powerful engine ensures swift acceleration and agile handling, perfect for off-road challenges.
  2. Advanced Suspension System: The high-quality suspension components provide excellent travel and dampening, allowing for smooth rides over rough terrain.
  3. 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:

  1. Seat Height: At 940mm, the seat might be a challenge for shorter riders, potentially affecting comfort and confidence on the bike.
  2. 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.
  3. Limited Color Options: While the red, white, and black aesthetic is striking, some riders may desire more customization options to reflect their personal style.

In summary, the 2021 Beta RR 4T 390 stands out as a well-rounded enduro-offroad motorcycle, combining power, agility, and advanced features to meet the demands of off-road enthusiasts. Whether you’re a seasoned pro or just starting, this bike is ready to help you tackle your next adventure with confidence.

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