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2023 Beta 390 RR-S 4-Stroke
2023 Beta 390 RR-S 4-Stroke

Specs

General Information

Manufacturer
Beta
Beta
Model Year
2023
2023
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 floating rotor

Rear - 240 mm rotor

Front - 260 mm floating rotor

Rear - 240 mm rotor

Rims

Front - 21 in.

Rear - 18 in.

Front - 21 in.

Rear - 18 in.

Tires
DOT Maxxis Enduro
DOT Maxxis Enduro

Dimensions

Height
Footrest - 16.3 in.
Footrest - 16.3 in.
Weight
241 lb. (wet weight, no fuel)
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

(Also comes with a 13t front for off road use)

O-ring chain

Final gearing front - 15t

Final gearing rear - 48t

(Also comes with a 13t front for off road use)

Drive System
Traction Control - On-Demand with push of a button
Traction Control - On-Demand with push of a button

Electrical

Instrumentation
Trail Tech Voyager GPS unit
Trail Tech Voyager GPS unit

Engine

Engine
4-stroke, 4-valve (Titanium intake and exhaust)
4-stroke, 4-valve (Titanium intake and exhaust)
Cooling
Liquid cooled, fan
Liquid cooled, fan
Cylinders
Single
Single
Displacement
385.6 cc
385.6 cc
Bore x Stroke
88 x 63.4 mm
88 x 63.4 mm
Compression Ratio
12.48:1
12.48:1
Clutch
Wet Diaphragm-style
Wet Diaphragm-style
Fuel System
42 mm Throttle Body with Dual Injectors
42 mm Throttle Body with Dual Injectors
Ignition

Dual map Kokusan 200 W output w/ On-Demand Traction Control

Spark Plug - NGK LKAR8A-9

Dual map Kokusan 200 W output w/ On-Demand Traction Control

Spark Plug - NGK LKAR8A-9

Starting
Electric (back up kick starter as an option)
Electric (back up kick starter as an option)
Lubrication
Twin Oil Pumps with Cartridge Filter & Separate Compartments For Engine & Transmission
Twin Oil Pumps with Cartridge Filter & Separate Compartments For Engine & Transmission
Fuel Capacity
2.4 US gal.
2.4 US 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 Open Cartridge with compression, rebound & spring preload adjustment

Wheel Travel - 11.6 in.

48 mm Sachs Open Cartridge with compression, rebound & spring preload adjustment

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

  • High performance Nissin disc brake
  • Available in four different engine displacements to complement various rider abilities and conditions
  • Front forks feature upgraded internals, as well as sleek new tank shrouds with a more narrow profile to improve turning radius
  • Standard rear linkage to provide a better ride over the competition
  • Folding mirrors that tuck away for unobstructed views while trail riding
  • Trail Tech Voyager GPS comes standard. This meter package has 40+ functions including: GPS with downloadable trail maps, altitude readings, engine temp, outside temp, trip meter, hour meter, and more.
  • Diaphragm clutch provides a lighter clutch pull while offering more progressive control, significantly reducing rider fatigue. The clutch is capable of transmitting even more torque. Three spring options allow riders ability to adjust clutch to suit their riding style

Features

  • High performance Nissin disc brake
  • Available in four different engine displacements to complement various rider abilities and conditions
  • Front forks feature upgraded internals, as well as sleek new tank shrouds with a more narrow profile to improve turning radius
  • Standard rear linkage to provide a better ride over the competition
  • Folding mirrors that tuck away for unobstructed views while trail riding
  • Trail Tech Voyager GPS comes standard. This meter package has 40+ functions including: GPS with downloadable trail maps, altitude readings, engine temp, outside temp, trip meter, hour meter, and more.
  • Diaphragm clutch provides a lighter clutch pull while offering more progressive control, significantly reducing rider fatigue. The clutch is capable of transmitting even more torque. Three spring options allow riders ability to adjust clutch to suit their riding style