2020 Beta 390 RR-S 4-Stroke
2020 Beta 390 RR-S 4-Stroke

Specs

General Information

Manufacturer
Beta
Beta
Model Year
2020
2020
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

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.

Footrest - 16.3 in.

37 in.

Footrest - 16.3 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, 4-stroke, electric start (back-up kick start available as an option)
4-valve, 4-stroke, electric start (back-up kick start available as an option)
Cooling
Liquid, cooling fan
Liquid, cooling 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)
Ignition

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

Spark Plug - NGK LKAR 8A-9

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

Spark Plug - NGK LKAR 8A-9

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 w/adjustable rebound and hi/low speed compression

Wheel travel - 11.4

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

Wheel travel - 11.4

Other

Warranty
12 month Limited
12 month Limited

Features

Features

  • TRAIL TECH VOYAGER GPS: Trail Tech Voyager GPS with navigation, engine & outside temperature, ability to download trail routes, hours, mileage, trip meter, and much more.
  • ZF SACHS FORKS: The ZF Sachs forks feature the positioning of the compression, rebound, and spring preload adjusters on the upper fork cap. Adjustments can now be made on the fly without special tooling.
  • ZF SACHS REAR SHOCK: The ZF Sachs rear shock is about 300g lighter and has been designed to increase sensitivity while enhancing comfort and traction.
  • ENGINE: All engine design for 2020, 2.2 lbs. lighter, clutch and crankshaft moved closer to swingarm pivot for better balance, improved cooling system, all clutch and ignition covers. Center main cases and cylinder head are all new as well.
  • FRAME DESIGN: All frame, sub-frame, and bodywork, Lighter weight yet stronger, slim design, easy to change air filter, push-button seat removal, and built in grab handles.
  • INCREASED FUEL CAPACITY: 2.4 gallon fuel tank for longer range.
  • WIDER FOOT PEGS: RR & RR-S models feature designed lightweight aluminum foot pegs that have a larger footprint giving riders more stability and control.
  • ELECTRIC START: An electric start for perfect start-up convenience whatever the situation (back-up kickstarter option available as an accessory).

Features

  • TRAIL TECH VOYAGER GPS: Trail Tech Voyager GPS with navigation, engine & outside temperature, ability to download trail routes, hours, mileage, trip meter, and much more.
  • ZF SACHS FORKS: The ZF Sachs forks feature the positioning of the compression, rebound, and spring preload adjusters on the upper fork cap. Adjustments can now be made on the fly without special tooling.
  • ZF SACHS REAR SHOCK: The ZF Sachs rear shock is about 300g lighter and has been designed to increase sensitivity while enhancing comfort and traction.
  • ENGINE: All engine design for 2020, 2.2 lbs. lighter, clutch and crankshaft moved closer to swingarm pivot for better balance, improved cooling system, all clutch and ignition covers. Center main cases and cylinder head are all new as well.
  • FRAME DESIGN: All frame, sub-frame, and bodywork, Lighter weight yet stronger, slim design, easy to change air filter, push-button seat removal, and built in grab handles.
  • INCREASED FUEL CAPACITY: 2.4 gallon fuel tank for longer range.
  • WIDER FOOT PEGS: RR & RR-S models feature designed lightweight aluminum foot pegs that have a larger footprint giving riders more stability and control.
  • ELECTRIC START: An electric start for perfect start-up convenience whatever the situation (back-up kickstarter option available as an accessory).