$12,490.00

390 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 390 RS
DISPLACEMENT 385.6cc
BORE / STROKE 88mm x 63.4mm
ENGINE TYPE 4-stroke, EFI, cooling fan, electric start
FUEL SYSTEM 42mm throttle body, dual injectors
TRANSMISSION 6-speed
TRACTION CONTROL On-demand
SUSPENSION Sachs open cartridge / Sachs shock
WHEELS 21″ / 18″
TIRES DOT Maxxis Enduro
GPS Trail Tech Voyager
WARRANTY 24 Months Limited
MSRP $12,490.00

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