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2021 Beta 390 RR-S 4-Stroke
2021 Beta 390 RR-S 4-Stroke

Specs

General Information

Manufacturer
Beta
Beta
Model Year
2021
2021
Model
390 RR-S 4-Stroke
390 RR-S 4-Stroke
Model Code
390RRS4STROKE
390RRS4STROKE
Color
Red
Red

Brakes/Wheels/Tires

Brakes

Front - 260 mm rotor

Rear - 240 mm rotor

Front - 260 mm rotor

Rear - 240 mm rotor

Wheels

Front Rim - 21 in.

Rear Rim - 18 in.

Front Rim - 21 in.

Rear Rim - 18 in.

Tires
Michelin Enduro (DOT Approved)
Michelin Enduro (DOT Approved)

Dimensions

Height
Footrest - 16.3 in.
Footrest - 16.3 in.
Weight
Dry - 241 lb. (wet weight, no fuel)
Dry - 241 lb. (wet weight, no fuel)
Ground Clearance
12.6 in.
12.6 in.
Wheelbase
58.7 in.
58.7 in.
Seat Height
37 in.
37 in.

Drivetrain

Transmission
6-speed
6-speed
Final Drive

O-ring chain

Final gearing front - 15t

Final gearing rear - 48t

(comes with a 13T front for off road use)

O-ring chain

Final gearing front - 15t

Final gearing rear - 48t

(comes with a 13T front for off road use)

Electrical

Instrumentation
Trail Tech Voyager GPS unit
Trail Tech Voyager GPS unit

Engine

Engine
4-valve, (Titanium intake) 4-stroke
4-valve, (Titanium intake) 4-stroke
Cooling
Liquid cooled, fan
Liquid cooled, fan
Cylinders
Single
Single
Displacement
386 cc
386 cc
Bore x Stroke
88 x 63.4 mm
88 x 63.4 mm
Compression Ratio
12.5:1
12.5:1
Clutch
Wet multi-disc
Wet multi-disc
Fuel System
42 mm Electronic Fuel Injection (Twin Injectors)
42 mm Electronic Fuel Injection (Twin Injectors)
Exhaust
Steel
Steel
Ignition

DC-CDI with dual map selection, Kokusan; 200 W output @ 6,000 rpm

Spark Plug - NGK LKAR 8A-9

DC-CDI with dual map selection, Kokusan; 200 W output @ 6,000 rpm

Spark Plug - NGK LKAR 8A-9

Starting
Electric (back-up kick start available as an option)
Electric (back-up kick start available as an option)
Lubrication
Twin oil pumps with cartridge oil filter. Separate oil for engine and clutch
Twin oil pumps with cartridge oil filter. Separate oil for engine and clutch
Fuel Capacity
US - 2.4 gal.
US - 2.4 gal.

Operational

Frame
Molybdenum steel / double cradle with quick air filter access
Molybdenum steel / double cradle with quick air filter access
Front Suspension

48 mm Sachs USD fork, adjustable compression, rebound, & spring preload

Wheel Travel - 11.6 in.

48 mm Sachs USD fork, adjustable compression, rebound, & spring preload

Wheel Travel - 11.6 in.

Rear Suspension

Aluminum Body Sachs shock with adjustable rebound and hi / low speed compression

Wheel travel - 11.4 in.

Aluminum Body Sachs shock with adjustable rebound and hi / low speed compression

Wheel travel - 11.4 in.

Other

Warranty
12 month limited
12 month limited

Features

Features

  • OFF-ROAD WORTHY: The most "Off-Road Worthy" Dual Sport available on the market
  • FOLDING MIRRORS: Mirrors fold down during off-road trail riding
  • SUSPENSION: Off-Road suspension setting to provide better handling on the most difficult terrain
  • VOYAGER METER: Complete GPS, total mileage, trip mileage, engine temperature, outside temperature, tach, hour meter, and much more

Features

  • OFF-ROAD WORTHY: The most "Off-Road Worthy" Dual Sport available on the market
  • FOLDING MIRRORS: Mirrors fold down during off-road trail riding
  • SUSPENSION: Off-Road suspension setting to provide better handling on the most difficult terrain
  • VOYAGER METER: Complete GPS, total mileage, trip mileage, engine temperature, outside temperature, tach, hour meter, and much more