The 2026 Beta 4-Stroke RS models are offered in four different engine sizes, each with their own personality; 350, 390, 430, and 500. Nimble feeling, a lightweight feel, the 390 offers additional torque.
Review – Key Features – Features & Benefits – Specifications
2026 Beta 390 RS 4-Stroke: ADDITIONAL TORQUE.
Introducing the 2026 Beta 390 RS 4-Stroke…
The Go Anywhere, Do Anything dual sport. The RS Models are infused with the same pedigree found in the RR X-Pro models and are the most off-road worthy dual sports on the market. Competitive on/off road motorcycles while maintaining a 50 state street legal status. This enables the rider to connect trails for even more riding and fun.
The 2026 4-Stroke RS models are offered in four different engine sizes, each with their own personality; 350, 390, 430, and 500. The 350 and 390 are the most nimble feeling, both offer a lightweight feel, the 350 has an engine that likes to be revved up a little more, while the 390 offers additional torque. The 430 has the same “rev” feel as the 350 but with more overall horsepower and torque. The 500 is the best-selling of all the models, offering riders a very user-friendly engine with plenty of torque and a lighter-than-expected feel while riding. The slimness of the RS adds to the light feeling of the range, which gives the rider confidence due to the agile feeling.
The RS front fork has an adjustable preload setting that is designed for riders who carry a large amount of fuel. The front fork preload can be reduced without the use of tools to allow for a softer ride as the fuel is being used and the overall weight decreases.
The air filter can be serviced with no tools required. A push-button seat removal system along with a large left-hand side panel, allows for an easy quick change. This system has been on all full-size Beta models since 2010.
Features Include: New main frame with larger backbone tube that reduces flex and gives the bike a more stable feeling, Xtrig Flexfix elastomer handlebar mounts reduce vibration, new rear brake master cylinder, larger volume, new rear muffler with removable spark arrestor, EFI with twin injectors, 50 state street legal off-road status, Traction Control and Map Switch are now integrated into the handlebar pad, 200 watt high output stator, Sachs ZF forks with tool-less adjustability, easy access air filter box, electric start, fold down mirrors, and Voyager GPS navigation system.
2026 Beta 390 RS 4-Stroke Guide Totalmotorcycle.com Key Features
New Features for 2026:
» New main frame with larger backbone tube that reduces flex and gives the bike a more stable feeling.
» Xtrig Flexfix elastomer handlebar mounts reduce vibration
» New rear brake master cylinder, larger volume
» New tires provide longer life for all-around dual sporting while being quieter on the highways.
» New rear muffler with removable spark arrestor
» All new plastics, straight from the new X-Pro models, provide a slimmer profile.
» Traction Control and Map Switch are now integrated into the handlebar pad
Standard Features:
» Four-stroke, twin cam, dual injection EFI w/electric start
» EFI – Twin Injector, four-valve engine
» 48mm ZF open cartridge fork with adjustable preload, compression, and rebound
» ZF rear shock with adjustable hi/low-speed compression and rebound
» Durable o-ring drive chain
» Cooling fan kit
» Fold down mirrors that can be moved downward while trail riding off-road
» LED headlight unit
» Skid plate and frame guards
» Rear suspension linkage
» Translucent fuel tank
» Hydraulic clutch
» 50-state street legal
2026 Beta 390 RS 4-Stroke Guide Totalmotorcycle.com Features and Benefits
2026 Beta RS Dual Sport Models
Go Anywhere, Do Anything
Introducing the all-new RS range, these 2026 models are the most off-road worthy dual sports on the market. These models are built on the RR X-Pro platform and share the same bodywork. They are competitive on/off-road while street legal items have been added to meet current EPA regulations without sacrificing the Beta trademark “Rideability”. This enables the rider to connect trails for even more riding and fun.
The RS front fork has an adjustable preload setting that is designed for riders who carry a large amount of fuel. The front fork preload can be reduced without the use of tools to allow for a softer ride as the fuel is being used and the overall weight decreases.
The air filter can be serviced with no tools required. A push-button seat removal system along with a large left-hand side panel, allows for an easy quick change. This system has been on all full-size Beta models since 2010.
The slimness of the RS adds to the light feeling of the range, which gives the rider confidence due to the agile feeling.
The 2026 4-Stroke RS models are offered in four different engine sizes, each with their own personality; 350, 390, 430, and 500. The 350 and 390 are the most nimble feeling, both offer a lightweight feel, the 350 has an engine that likes to be revved up a little more, while the 390 offers additional torque. The 430 has the same “rev” feel as the 350 but with more overall horsepower and torque. The 500 is the best-selling of all the models, offering riders a very user-friendly engine with plenty of torque and a lighter-than-expected feel while riding.
These RS models include the Trail Tech Voyager GPS unit that provides riders with a full-featured GPS that allows the ability to upload and download riding routes.
2026 Beta 390 RS 4-Stroke Guide – Totalmotorcycle.com Specifications/Technical Details
US MSRP Price: $ See Dealer USD
Canada MSRP Price: $ See Dealer CDN
Europe/UK MSRP Price: £ See Dealer GBP (On The Road inc 20% Vat)
| Engine Type | Single cylinder, 4-stroke, 4-valve, DOHC, EFI, liquid cooled |
| Bore | 95 mm |
| Stroke | 55 mm |
| Displacement | 386 cc |
| Compression Ratio | 12.5:1 |
| Valve Train | Titanium intake valves |
| Ignition | GET |
| Spark Plug | NGK LKAR8AI-9 |
| Lubrication | Twin oil pumps w/ cartridge oil filter |
| Oil Pump | Twin oil pumps w/ cartridge oil filter |
| Clutch | Wet multi-disc hydraulic w/ dual springs |
| Final Drive | Chain |
| Engine Control | GET |
| Frame | Red steel semi-double cradle |
| Swingarm | Red steel |
| Ground Clearance | 12.6 in |
| Seat Height | 37.4 in |
| Wheelbase | 58.3 in |
| Dry Weight | 231 lbs |
| Fuel Tank Capacity | 2.4 gal |
| Rear Suspension | Fully adjustable KYB |
| Front Wheel Travel | 11.8 in |
| Rear Wheel Travel | 11 in |
| Front/Rear Tire | Michelin Enduro Medium |
| Front/Rear Rim | 21 in (Front) / 18 in (Rear) |
| Warranty | 24 months limited warranty |
Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).
Posted on September 24, 2025 by Michael Le Pard
