What category is the 2021 Beta RR 4T 390?

The 2021 Beta RR 4T 390 has a Category of Enduro / offroad.

What is the engine size of the 2021 Beta RR 4T 390?

The 2021 Beta RR 4T 390 has a Capacity: of 385.4 ccm (23.52 cubic inches).

What type of engine does the 2021 Beta RR 4T 390 have?

The 2021 Beta RR 4T 390 has a Engine type of Single cylinder, four-stroke.

Is the 2021 Beta RR 4T 390 air cooled or liquid cooled?

The 2021 Beta RR 4T 390 has a Cooling system of Liquid.

How many gears does the 2021 Beta RR 4T 390 have?

The 2021 Beta RR 4T 390 has a Gearbox of 6-speed.

How much does the 2021 Beta RR 4T 390 weigh?

The 2021 Beta RR 4T 390 has a Dry weight of 107.5 kg (237.0 pounds).

What is the seat height of the 2021 Beta RR 4T 390?

The 2021 Beta RR 4T 390 has a Seat height of 940 mm (37.0 inches) If adjustable, lowest setting..

Beta RR 4T 390 - 2021 Specifications and Reviews

Name: 2021 Beta RR 4T 390
Brand: Beta

The 2021 Beta RR 4T 390 is a lightweight enduro motorcycle designed for trail riders and off-road enthusiasts seeking versatility and reliability. Powered by a 385cc liquid-cooled four-stroke single-cylinder engine with advanced fuel injection, it delivers strong low-to-mid-range torque ideal for technical terrain. Known for its nimble handling and durable construction, the RR 4T excels in both competitive enduro racing and recreational off-road riding.

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General information
Category	Enduro / offroad
Year	2021
Model	Beta RR 4T 390
Engine and Transmission Specifications
Clutch	Wet multi-disc
Transmission type	Chain (final drive)
Gearbox	6-speed
Cooling system	Liquid
Lubrication system	2 oil pumps
Ignition	DC-CDI without trembler with variable ignition timing, Kokusan type.
Fuel control	Double Overhead Cams/Twin Cam (DOHC)
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
Engine type	Single cylinder, four-stroke
Capacity:	385.4 ccm (23.52 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes	Single disc
Diameter	260 mm (10.2 inches)
Front brakes	Single disc
Rear tire	140/80-18
Front tire	90/90-21
Rear wheel travel	290 mm (11.4 inches)
Rear Suspension	Monoshock with progressive compound lever
Front wheel travel	295 mm (11.6 inches)
Front Suspension	Hydraulic USD fork with Ã¸48mm shaft
Frame type	Molybdenum steel with double cradle split above the exhaust port

Physical measures and capacities
Reserve fuel capacity	3.89 litres (1.03 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.

Rider Fit Visualizer

2021 Beta RR 4T 390 Rider Ergonomics Assessment

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Feet:

At 940mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2021 Beta RR 4T 390, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1

MotorcycleDB Review

The 2021 Beta RR 4T 390 is a versatile and reliable motorcycle that offers strong performance and handling. With its 390cc engine, it provides a great balance of power and agility, making it suitable for a variety of riding environments. The bike is well-built and designed to withstand off-road challenges, making it a great choice for riders who enjoy exploring rugged terrain. Its comfortable ergonomics and responsive suspension further enhance its overall riding experience, making it a top contender in the mid-size off-road motorcycle segment. In addition to its impressive performance, the 2021 Beta RR 4T 390 also boasts a stylish and modern design that is sure to turn heads. Its sleek lines and bold color options make it a visually appealing choice for riders who value aesthetics. Whether you're hitting the trails or navigating city streets, this motorcycle offers a winning combination of power, versatility, and style. Overall, the 2021 Beta RR 4T 390 is a standout option for riders looking for a capable and eye-catching off-road motorcycle.