FMDB

Beta 390 RR 2023

2023Intermediate · 6/10

Enduro / Trail / Dual Sport

Beta 390 RR 2023

386cc

4-stroke

279lb

wet weight

37in

Seat height

11.8in

Front travel

6spd

Gearbox

The machine

The 2023 Beta 390 RR is an off-road four-stroke motorcycle powered by a 386 cc, single-cylinder engine with electronic fuel injection, two injectors and liquid cooling. It pairs a six-speed transmission with a 9-liter fuel tank and long-travel suspension: a 48 mm upside-down fork with 300 mm of wheel travel and a rear setup with 295 mm of wheel travel. The listed running-order weight is 126.5 kg with a full tank and optional equipment. A 940 mm seat height and 320 mm ground clearance are useful figures to consider when checking fit and suitability for uneven terrain.

The chassis uses a 21-inch front wheel and an 18-inch rear wheel, with a 260 mm front disc and 240 mm rear disc. The RR 350–390–430–480 manual covers both Standard and Race Edition versions, so equipment details can vary by edition.

Who should ride it

This bike fits riders looking for a full-size, off-road-focused four-stroke with a six-speed gearbox and substantial suspension travel. It is a practical match for weekend trail riders and off-road riders covering varied terrain, including rough or muddy tracks where ground clearance and suspension travel matter. The 940 mm seat height and 126.5 kg running-order weight are important fit and handling considerations, especially for newer riders or anyone frequently maneuvering the bike at a standstill.

Garage

01 / 04

Tech specs

Engine
Displacement
386cc
Stroke
4-stroke
Fuel system
Fuel injection
Bore × stroke
88 × 63.4 mm
Compression
12.5:1
Torque
23.6 ft-lb
Cooling
Liquid
Configuration
Single-cylinder
Valve train
DOHC
Valves
4
Oil chamber
Dual
Engine oil
0.75 L
Oil type
10W-50
Coolant
1.3 L
Clutch
Type
Wet multiplate
Actuation
Hydraulic
Assist
Manual
Spring
Diaphragm
Drivetrain
Starting
Electric
Transmission
6-speed
Front sprocket
13T
Rear sprocket
49T
Dimensions
Wet weight
278.9 lb
Seat height
37″
Ground clearance
12.6″
Wheelbase
58.7″
Width
32.2″
Height
50″
Fuel capacity
2.38 gal
Suspension
Front
48 mm open-cartridge hydraulic upside-down fork
Front travel
11.8″
Rear
Single shock absorber with progressive linkage
Rear travel
11.6″
Wheels & tires
Front wheel
21″
Rear wheel
18″
Front tire
90/90-21
Rear tire
140/80-18
Brakes
Front disc
260 mm
Rear disc
240 mm
Stock features
Skid plate
Yes
Radiator fan
No
Street legal
Yes
Battery / electrical
Battery
Yes
Chemistry
Lithium
Voltage
12V

Pit-lane questions

  1. 01

    How much does the 2023 Beta 390 RR weigh?

    Its listed running-order weight is 126.5 kg, with a full fuel tank and optional equipment. The listed distribution is 61.8 kg at the front and 64.7 kg at the rear.

  2. 02

    What engine does the 2023 Beta 390 RR have?

    It has a 386 cc, single-cylinder, four-stroke engine with electronic fuel injection and a double injector. The cooling system uses forced liquid circulation by pump.

  3. 03

    How much fuel does the 2023 Beta 390 RR hold?

    The fuel tank capacity is 9 liters, including a 2.5-liter reserve.

  4. 04

    What is the seat height of the 2023 Beta 390 RR?

    The seat height is 940 mm. Ground clearance is 320 mm.

  5. 05

    What oil does the 2023 Beta 390 RR use?

    The specified engine oil is 10W-50. Normal maintenance capacity is 750 ml; capacity after a complete engine review is 800 ml.

  6. 06

    How many gears does the 2023 Beta 390 RR have?

    It has a six-speed transmission and a wet, multidisc clutch.

  7. 07

    What are the tire sizes on the 2023 Beta 390 RR?

    The specified front tire is 90/90-21 and the rear is 140/80-18. The wheels are 21 inches at the front and 18 inches at the rear.

  8. 08

    How much suspension travel does the 2023 Beta 390 RR have?

    The front wheel travel is 300 mm, and the rear wheel travel is 295 mm. The rear shock absorber travel is 135 mm.