The Beta 350 RS 4-Stroke is built to go wherever the road ends — combining the lightweight, agile feel of a serious enduro bike with the equipment and street-legal capability to connect trails and explore beyond them. Its 349.1cc liquid-cooled four-stroke engine uses electronic fuel injection with dual injectors and a six-speed transmission to deliver smooth, responsive power across a wide range of terrain. The 350's free-revving character makes it one of the most nimble-feeling engines in the RS lineup, giving riders plenty of control in technical terrain while still having the power to cruise between trails.
The RS platform brings proven off-road performance into a 50-state street-legal package, with full lighting, mirrors, DOT tires, a spark arrestor, and Trail Tech Voyager GPS navigation. A new main frame improves stability while Xtrig FlexFix handlebar mounts help reduce vibration, and the Sachs suspension provides tool-less adjustability for changing conditions. The 21"/18" wheels, 260mm front and 240mm rear brakes, 12.2" of ground clearance, and 36.8" seat height give the 350 RS the hardware to handle serious dirt while remaining completely at home on pavement. Add on-demand traction control, selectable engine maps, electric start, a high-output 200W stator, and quick-access air-filter service, and the 350 RS is a true go-anywhere, do-anything dual-sport built for riders who don't want to choose between the street and the trail.
Engine: Single-cylinder, 4-stroke, 4-valve, liquid-cooled
Displacement: 349.1cc
Bore x Stroke: 88mm x 57.4mm
Compression Ratio: 13.19:1
Fuel System: 42mm throttle body with dual injectors
Valve Train: Titanium intake and exhaust valves
Cooling: Liquid-cooled with cooling fan
Lubrication: Twin oil pumps with cartridge filter and separate engine/transmission compartments
Ignition: Dual-map Kokusan, 200W output
Clutch: Wet diaphragm-style
Transmission: 6-speed
Final Drive: O-ring chain
Starting: Electric start
Weight: 237 lbs / 108 kg dry
Seat Height: 36.8"
Ground Clearance: 12.2"
Wheelbase: 58.7"
Fuel Capacity: 2.4 gallons
Front Suspension: 48mm Sachs ZF fork with compression, rebound, and preload adjustment
Rear Suspension: Sachs ZF shock with adjustable damping
Front Wheel Travel: 11.6"
Rear Wheel Travel: 11.4"
Front Brake: 260mm floating disc
Rear Brake: 240mm disc
Wheels: 21" front / 18" rear
Tires: DOT Maxxis Enduro
Electronics: On-demand traction control, dual engine maps, 200W high-output stator
Street Equipment: Headlight, taillight, turn signals, mirrors, horn, license-plate equipment
Navigation: Trail Tech Voyager GPS unit
Key Features: 50-state street legal, electronic fuel injection, dual injectors, electric start, traction control, selectable maps, Sachs suspension, Xtrig FlexFix handlebar mounts, quick-access air filter, spark arrestor
The Beta 390 RS 4-Stroke is built for riders who want one bike that can confidently handle both pavement and serious off-road terrain. Its 385.6cc liquid-cooled four-stroke engine delivers a strong balance of responsive power and usable torque, giving the 390 a nimble feel while offering more low-to-midrange pull than the 350. With electronic fuel injection, dual injectors, electric start, a six-speed transmission, and selectable engine mapping with on-demand traction control, the 390 RS is ready for everything from technical trails to longer dual-sport adventures.
The RS platform brings genuine enduro performance to a 50-state street-legal package, allowing you to ride directly from the pavement onto the trail without compromising its off-road capability. The 390 features a new main frame designed for improved stability, Xtrig FlexFix handlebar mounts to reduce vibration, Sachs ZF suspension with tool-less adjustability, and 21"/18" wheels built for serious dirt riding. Add full street equipment, a spark arrestor, Voyager GPS navigation, a 200W high-output stator, and an easy-access air filter, and the 390 RS becomes a versatile go-anywhere dual-sport for riders who want the freedom to explore without being limited to one type of terrain.
Engine: Single-cylinder, 4-stroke, 4-valve, liquid-cooled
Displacement: 385.6cc
Bore x Stroke: 88mm x 63.4mm
Compression Ratio: 12.48:1
Fuel System: 42mm electronic fuel injection with dual injectors
Valve Train: Titanium intake and exhaust valves
Cooling: Liquid-cooled with cooling fan
Ignition: Kokusan dual-map, 200W output
Clutch: Wet diaphragm-style
Transmission: 6-speed
Final Drive: O-ring chain
Starting: Electric start
Dry Weight: Approx. 237 lbs
Seat Height: Approx. 36.8"
Ground Clearance: Approx. 12.2"
Wheelbase: Approx. 58.7"
Fuel Capacity: 2.4 gallons
Front Suspension: 48mm Sachs ZF fork with tool-less adjustability
Rear Suspension: Sachs ZF shock with adjustable damping
Front Brake: 260mm floating disc
Rear Brake: 240mm disc
Wheels: 21" front / 18" rear
Tires: DOT Maxxis Enduro
Electronics: On-demand traction control, dual engine maps, 200W high-output stator
Navigation: Trail Tech Voyager GPS
Street Equipment: Headlight, taillight, turn signals, mirrors, horn, license-plate equipment
Key Features: 50-state street legal, EFI, dual injectors, electric start, traction control, selectable maps, Sachs suspension, Xtrig FlexFix mounts, spark arrestor, quick-access air filter, Voyager GPS navigation
The Beta 430 RS 4-Stroke is built to bridge the gap between a high-performance dirt bike and a true street-legal dual sport, delivering strong four-stroke power without sacrificing the lightweight, agile feel that makes Beta’s RS platform so capable off-road. Its 430.9cc liquid-cooled DOHC engine uses dual fuel injectors and delivers a strong combination of horsepower and torque, while the 6-speed transmission gives it the versatility to handle tight trails, open terrain, and connecting roads.
The 430 RS features a chromoly steel double-cradle frame, electric start, hydraulic clutch, on-demand traction control, and a Trail Tech Voyager GPS unit. Suspension comes from adjustable 48mm Sachs forks up front and a fully adjustable Sachs rear shock, providing 11.6 inches of front travel and 11.4 inches at the rear. With 21"/18" wheels, 260mm front and 240mm rear brakes, 12.2 inches of ground clearance, and a claimed 237 lb dry weight, the 430 RS is designed to stay composed both on the road and deep into the trail.
The result is a versatile, 50-state street-legal dual sport that combines the performance DNA of Beta’s off-road lineup with the equipment needed to make longer rides and trail connections practical. If you want one bike that can comfortably transition from pavement to serious off-road riding, the 430 RS is built for exactly that.
Motor: 430.9cc liquid-cooled DOHC 4-stroke single-cylinder
Fuel System: 42mm throttle body with dual injectors
Transmission: 6-speed
Clutch: Wet diaphragm-style hydraulic
Starting: Electric start
Traction Control: On-demand
Frame: Chromoly steel double-cradle
Front Suspension: 48mm Sachs open-cartridge fork, adjustable
Rear Suspension: Sachs shock, adjustable high/low-speed compression and rebound
Front Travel: 11.6" / 295mm
Rear Travel: 11.4" / 290mm
Front Brake: 260mm floating disc
Rear Brake: 240mm disc
Wheels: 21" front / 18" rear
Ground Clearance: 12.2"
Seat Height: 36.8"
Fuel Capacity: 2.4 gallons
Dry Weight: 237 lbs
Electronics: Trail Tech Voyager GPS, on-demand traction control
The Beta 500 RS 4-Stroke is built for riders who want serious off-road capability without giving up the ability to connect trails and ride on the street. Its 477.5cc single-cylinder four-stroke delivers strong, usable torque throughout the powerband, giving the 500 RS the grunt to climb, crawl, and power through demanding terrain while still feeling surprisingly manageable on the trail. With fuel injection, electric start, a six-speed transmission, and on-demand traction control, the 500 RS is designed to make long days of riding easier and more enjoyable.
The chassis combines a steel double-cradle frame with 48mm Sachs open-cartridge forks and a fully adjustable Sachs rear shock, providing the suspension control needed for everything from technical trails to faster open terrain. A 21"/18" wheel setup, DOT-approved Maxxis Enduro tires, 260mm front and 240mm rear brakes, and 12.2" of ground clearance give the 500 RS the hardware to handle serious off-road riding. At 237 lbs dry with a 2.4-gallon fuel tank, it delivers an impressive balance of power, range, and agility.
The RS also comes equipped for the street, with lighting, mirrors, and a 50-state street-legal configuration, while features like the Trail Tech Voyager GPS, cooling fan, quick-access air filter, and tool-adjustable suspension add versatility for longer rides. Whether you're connecting trails, exploring backcountry roads, or attacking technical singletrack, the Beta 500 RS is a go-anywhere dual-sport built around torque, control, and real off-road performance.
Motor: 477.5cc single-cylinder, 4-stroke, 4-valve
Cooling: Liquid-cooled with cooling fan
Fuel System: 42mm throttle body with dual injectors
Starting: Electric start
Transmission: 6-speed
Final Drive: O-ring chain
Compression Ratio: 11.86:1
Clutch: Wet diaphragm-style hydraulic clutch
Traction Control: On-demand
Frame: Molybdenum steel double cradle
Front Suspension: 48mm Sachs open cartridge, adjustable compression, rebound & spring preload
Rear Suspension: Sachs shock, adjustable rebound & high/low-speed compression
Front Travel: 11.6" / 295mm
Rear Travel: 11.4" / 290mm
Front Brake: 260mm floating rotor
Rear Brake: 240mm rotor
Wheels: 21" front / 18" rear
Tires: DOT Maxxis Enduro
Seat Height: 36.8"
Ground Clearance: 12.2"
Wheelbase: 58.7"
Fuel Capacity: 2.4 gallons
Dry Weight: 237 lbs
Electronics: Trail Tech Voyager GPS, on-demand traction control