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Model Type
Off-Road
Model Type
-
MSRP
$8,499
MSRP
-
Warranty
6
Warranty
-
Insurance
Insurance
-
Finance
Finance
-
Generic Type (Primary)
Off-Road
Generic Type (Primary)
Off-Road
Manufacturer Country
Italy
Manufacturer Country
Italy
Parent Company
BETA
Parent Company
BETA
Display Name
Evo Sport 300 4-Stroke
Display Name
RS 390
Year
2015
Year
2024
Make
BETA
Make
BETA
Introduction Year
-
Introduction Year
2024
Manufacturer Recommend Minimum Age
-
Manufacturer Recommend Minimum Age
16
Engine Type
Single-Cylinder
Engine Type
Single-Cylinder
Cylinders
1
Cylinders
1
Engine Stroke
4-Stroke
Engine Stroke
4-Stroke
Cooling
Liquid
Cooling
Liquid
Valves
4
Valves
4
Valves Per Cylinder
4
Valves Per Cylinder
4
Valve Configuration
SOHC
Valve Configuration
DOHC
Bore (mm/in)
84 / 3.31
Bore (mm/in)
88 / 3.46
Stroke (mm/in)
53.6 / 2.11
Stroke (mm/in)
-
Displacement (cc/ci)
297.3 / 18.1
Displacement (cc/ci)
385.6 / 23.5
Compression Ratio
11.5:1
Compression Ratio
12.48:1
Starter
Kick
Starter
Electric
Fuel Requirements
Regular
Fuel Requirements
Regular
Fuel Type
Gas
Fuel Type
Gas
Carburetion Brand
Mikuni
Carburetion Brand
-
Fuel Injector
No
Fuel Injector
Yes
Carburetor
Yes
Carburetor
No
Number Of Carburetors
1
Number Of Carburetors
-
Carburetion Type
Carburetor
Carburetion Type
Fuel Injected
Engine
-
Engine
Standard
Carburetion
-
Carburetion
Standard
Stroke (in/mm)
-
Stroke (in/mm)
2.5 / 63.4
Fuel Injector Size (mm)
-
Fuel Injector Size (mm)
42
Transmission Type
Manual
Transmission Type
Manual
Number Of Speeds
5
Number Of Speeds
6
Primary Drive (Rear Wheel)
Chain
Primary Drive (Rear Wheel)
Chain
Reverse
No
Reverse
No
Transmission
-
Transmission
Standard
Tube / Tubeless
Tubed
Tube / Tubeless
-
Tire Brand
Shinko
Tire Brand
-
Front Wheel Diameter
21
Front Wheel Diameter
-
Rear Wheel Diameter
18
Rear Wheel Diameter
-
Front Tire (Full Spec)
Shinko R21 Knobby
Front Tire (Full Spec)
-
Rear Tire (Full Spec)
Shinko R18 Knobby
Rear Tire (Full Spec)
-
Front Brake Type
Hydraulic Disc
Front Brake Type
Hydraulic Disc
Front Brake Diameter (in/mm)
7.3 / 185
Front Brake Diameter (in/mm)
10.2 / 260
Rear Brake Type
Hydraulic Disc
Rear Brake Type
Hydraulic Disc
Rear Brake Diameter (in/mm)
6.3 / 160
Rear Brake Diameter (in/mm)
9.4 / 240
Brakes
-
Brakes
Standard
Brake Brand Name
-
Brake Brand Name
Nissin
Front Suspension Type
Telescopic Fork
Front Suspension Type
Inverted Fork
Front Suspension Size (in/mm)
1.5 / 38
Front Suspension Size (in/mm)
1.9 / 48
Front Travel (in/mm)
6.5 / 165.1
Front Travel (in/mm)
11.6 / 294.6
Front Central Suspension Strut
No
Front Central Suspension Strut
No
Steering Damper
No
Steering Damper
-
Rear Suspension Type
Twin Sided Swing Arm
Rear Suspension Type
Twin Sided Swing Arm
Rear Travel (in/mm)
7.1 / 180.3
Rear Travel (in/mm)
11.4 / 289.6
Rear Adjustable Shock / Spring Pre-Load
No
Rear Adjustable Shock / Spring Pre-Load
Yes
Rear Adjustable Rebound Damping
Yes
Rear Adjustable Rebound Damping
Yes
Number Rear Shock Absorbers
1
Number Rear Shock Absorbers
1
Rear Suspension Material
Aluminum
Rear Suspension Material
Aluminum
Air Adjustable
No
Air Adjustable
No
Front Suspension Brand Name
-
Front Suspension Brand Name
Sachs
Front Adjustable Fork Pre-Load
-
Front Adjustable Fork Pre-Load
Yes
Front Adjustable Rebound Damping
-
Front Adjustable Rebound Damping
Yes
Rear Suspension Brand Name
-
Rear Suspension Brand Name
Sachs
Steering Control
Handlebar
Steering Control
Handlebar
Length (ft)
6.52
Length (ft)
-
Width (in/mm)
33.5 / 850
Width (in/mm)
-
Height (in/mm)
43.9 / 1115
Height (in/mm)
-
Wheelbase (in/mm)
51.4 / 1305.6
Wheelbase (in/mm)
-
Ground Clearance (in/mm)
12.2 / 309.9
Ground Clearance (in/mm)
-
Length (ft/ft)
6
Length (ft/ft)
-
Length (ft/in)
6.3
Length (ft/in)
-
Dry Weight (lbs/kg)
158.5 / 71.9
Dry Weight (lbs/kg)
-
Fuel Capacity (gal/l)
2 / 7.6
Fuel Capacity (gal/l)
-
Performance
Standard
Performance
-
Seat Type
One-Piece
Seat Type
One-Piece
Adjustable
No
Adjustable
No
Seat Location
Driver
Seat Location
Driver
Folding
No
Folding
No
Seat Height (in/mm)
32 / 812.8
Seat Height (in/mm)
37 / 939.8
Number Of Seats
1
Number Of Seats
1
Seat Material
-
Seat Material
Vinyl
Seat Specifications
-
Seat Specifications
Standard
Frame
Aluminum
Frame
Chromium Molybdenum
Body Material
Plastic
Body Material
Plastic
Hand Grips
Standard
Hand Grips
Standard
Foot Peg Location
Driver
Foot Peg Location
Driver
Chain Guard
Yes
Chain Guard
Yes
Chassis Protectors
No
Chassis Protectors
-
Drive Shaft Guard
No
Drive Shaft Guard
No
Engine Case Guard
No
Engine Case Guard
-
Fork Guards
No
Fork Guards
Yes
Saddle Bag Guard
No
Saddle Bag Guard
No
Belt Guard
No
Belt Guard
No
Hand Guards
Yes
Hand Guards
Yes
Brush Guard
No
Brush Guard
No
Exhaust Guard
Yes
Exhaust Guard
Yes
Light Guard
No
Light Guard
No
Side Cover
No
Side Cover
-
Fuel Tank Cover
No
Fuel Tank Cover
No
Front Fender
Standard
Front Fender
Standard
Rear Fender
Standard
Rear Fender
Standard
Top Crown
Standard
Top Crown
-
Stand Type
Kick
Stand Type
Kick
Handlebars
Standard
Handlebars
Standard
Handlebar Pads
Standard
Handlebar Pads
-
Construction
-
Construction
Standard
Foot Pegs
-
Foot Pegs
Standard
Adjustable
-
Adjustable
No
Exterior Guards
-
Exterior Guards
Standard
Exterior Covers
-
Exterior Covers
Standard
Stand
-
Stand
Standard
Skid Plate
-
Skid Plate
Standard
Trip Odometer
Standard
Trip Odometer
Standard
Digital Instrumentation
-
Digital Instrumentation
Standard
Clock
-
Clock
Standard
Speedometer
-
Speedometer
Standard
Tachometer
-
Tachometer
Optional
Compass
-
Compass
Standard
Navigation System
-
Navigation System
Standard
GPS
-
GPS
Standard
Lap Timer
-
Lap Timer
Standard
Temperature Warning
-
Temperature Warning
Standard
Temperature Warning Type
-
Temperature Warning Type
Light
Warranty (Months/Condition)
6 / Limited
Warranty (Months/Condition)
12 / Limited
Battery Warranty (Months)
0
Battery Warranty (Months)
-
Price
-
Price
Standard
MSRP
-
MSRP
$11,599
Metallic
No
Metallic
-
Decal Kit
Standard
Decal Kit
-
Dimensions
-
Dimensions
Standard
Weight
-
Weight
Standard
Capacities
-
Capacities
Standard
Performance
-
Performance
Standard
Wheelbase (in/mm)
-
Wheelbase (in/mm)
58.7 / 1491
Ground Clearance (in/mm)
-
Ground Clearance (in/mm)
12.6 / 320
Dry Weight (lbs/kg)
-
Dry Weight (lbs/kg)
241 / 109.3
Fuel Capacity (gal/l)
-
Fuel Capacity (gal/l)
2.4 / 9.1
Engine Displacement to Weight (cc)
-
Engine Displacement to Weight (cc)
1.6
Wheels
-
Wheels
Standard
Chromed
-
Chromed
No
Tube / Tubeless
-
Tube / Tubeless
Tubed
Tires
-
Tires
Standard
Tire Brand
-
Tire Brand
Maxxis®
Front Wheel Diameter
-
Front Wheel Diameter
21
Rear Wheel Diameter
-
Rear Wheel Diameter
18
Front Tire (Full Spec)
-
Front Tire (Full Spec)
Maxxis Enduro 21
Rear Tire (Full Spec)
-
Rear Tire (Full Spec)
Maxxis Enduro 18
Fork Bag
-
Fork Bag
Optional
Tank Bag
-
Tank Bag
Optional
Rear Rack
-
Rear Rack
Optional
Saddle Bag (s)
-
Saddle Bag (s)
Optional
Type
-
Type
Halogen
Headlight (s)
-
Headlight (s)
Standard
Halogen Headlight (s)
-
Halogen Headlight (s)
Standard
Rearview Mirrors
-
Rearview Mirrors
Standard
Saddle Bag Mounts
-
Saddle Bag Mounts
Optional
Paint
-
Paint
Standard
Metallic
-
Metallic
No
Decal Kit
-
Decal Kit
Standard
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