$12,390.00

350 RS 4-Stroke

The go-anywhere, do-anything dual sport. Beta RS models deliver the same off-road DNA found in the RR X-Pro line, making them some of the most trail-capable 50-state street-legal dual sports available. That means you can link trails with roads, ride longer loops, and spend more time having fun—without needing a truck in between.

For 2026, the 4-Stroke RS lineup comes in four engine sizes: 350, 390, 430, and 500, each with a distinct feel:

  • 350 RS: the most lively and nimble—likes to be revved.

  • 390 RS: similar light feel, with extra torque for easier pulling power.

  • 430 RS: keeps the “rev-happy” character but adds more horsepower and torque.

  • 500 RS: the best-seller—very user-friendly, lots of torque, and lighter-feeling than expected thanks to the slim chassis.

Smart, rider-friendly design

The RS fork features tool-less preload adjustment, built for riders carrying more fuel. As fuel burns off and weight drops, preload can be reduced quickly to keep the ride compliant and comfortable.

Maintenance is simple too: the air filter is tool-free, thanks to a push-button seat and large access panel—an easy, fast system Beta has used on full-size models for years.

2026 highlights & features

  • New main frame with larger backbone tube for improved stability

  • Xtrig Flexfix elastomer bar mounts to reduce vibration

  • New rear brake master cylinder with larger volume

  • New rear muffler with removable spark arrestor

  • EFI with twin injectors

  • 50-state street-legal dual sport capability

  • Traction Control + Map Switch integrated into the handlebar pad

  • 200-watt high-output stator

  • Sachs ZF forks with tool-less adjustability

  • Easy-access airbox

  • Electric start, fold-down mirrors

  • Voyager GPS navigation system

Specification 350 RS
ENGINE TYPE Single cylinder, 4-stroke, liquid cooled, 4-valve (Titanium intake, steel exhaust), cooling fan, electric start (optional kick starter)
BORE 88mm
STROKE 57.4mm
DISPLACEMENT 349.1cc
COMPRESSION RATIO 13.19:1
VALVE TRAIN Titanium Intake & Exhaust
IGNITION Dual-Map Kokusan, 200W output w/ Traction Control
SPARK PLUG NGK LKAR8A-9
LUBRICATION Twin Oil Pumps w/ cartridge filter & separate engine/transmission compartments
FUEL SYSTEM 42mm throttle body w/ dual injectors
CLUTCH Wet diaphragm-style
TRANSMISSION 6 Speed
FINAL DRIVE O-ring chain
TRACTION CONTROL On-demand, push-button
FRAME Molybdenum steel / double cradle
WHEELBASE 58.7″
SEAT HEIGHT 36.8″
GROUND CLEARANCE 12.2″
FOOTREST HEIGHT 16.1″
DRY WEIGHT 237 lbs
FUEL TANK CAPACITY 2.4 US Gallons
FRONT SUSPENSION 48 mm Sachs open cartridge fork, compression, rebound & tool-less preload
REAR SUSPENSION Aluminum-body Sachs shock, adjustable rebound & hi/low speed compression
FRONT WHEEL TRAVEL 11.6″
REAR WHEEL TRAVEL 11.4″
FRONT BRAKE 260 mm floating rotor
REAR BRAKE 240 mm rotor
FRONT/REAR RIM 21″ / 18″
FRONT/REAR TIRE DOT Maxxis Enduro
ELECTRICAL Trail Tech Voyager GPS
WARRANTY 24-Month Limited Warranty
MSRP $12,390.00
DESTINATION TBA

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