Beta RS 350




Make Model

Beta RS 350




Four stroke, single cylinder


349 cc / 21.3 cu in
Bore x Stroke 88 x 57.4 mm
Cooling System Liquid cooled
Compression Ratio 12.1:1


Keihin FCR-MX 39 mm
Lubrication Twin oil pumps with cartridge oil filter. Separate oil for engine and clutch
Engine Oil Capacity 0.8 L / 0.2 US gal


DC-CDI with variable ignition timing, Kokusan.
Spark Pluc NGK LKAR 8A-9
Starting Electric and kick
Spark Plug NGK LKAR 8A-9
Clutch Wet multi-disc
Gearbox Oil Capacity 0.8 L / 0.2 US gal


6 Speed 
Final Drive O-ring chain, DID
Primary Ratio 31:73
Final Ratio 14:45
Frame Molybdenum steel with double cradle split above exhaust port. Air filter access from the side

Front Suspension

Marzocchi  USD fork, 45 mm, adjustable compression and rebound, TFX technology
Front Wheel Travel 290 mm / 11.4 in

Rear Suspension

Sachs shock w/adjustable rebound and hi/low speed compression
Rear Wheel Travel 290 mm / 11.4 in

Front Brakes

Single 260 mm floating disc, 2 piston caliper

Rear Brakes

Single 240 mm disc, 1 piston caliper

Front Tyre

90/90 -21

Rear Tyre

140/80 -18
Wheelbase 1475 mm / 58.1 in
Ground Clearance 320 mm / 12.6 in
Seat Height 934.7 mm / 36.8 in
Footrest Height 411 mm / 16.2 in

Dry Weight

108 kg / 240 lbs

Fuel Capacity 

7.9 L / 2.1 US gal

American Beta is releasing the 2012 Beta Dual Sport RS model line up with a complete range being offered for 2012 including 350, 450, and 520 versions.

The RS model range has been designed for the USA market with all three models being 50-state street legal. These premium dual sporters include our famous twin cam 4 stroke powerplant that incorporates a heavier flywheel for chugging power to tackle the tough stuff while the twin cam and short stroke allows amazing over-rev for the faster-paced conditions.

Newly added to the range for 2012 is the Beta 350 RS. A bike designed for single track trails as well as all-around casual riding. The 350's engine provides enough power and torque for both the casual play rider as well as the serious dual sporter. With its titanium valves and twin-cam engine the 350 RS offers a level of performance that will exceed riders expectations.

Returning for 2012 are the popular 450 and 520 versions. All receiving the same engine upgrades as our popular RR models. These two models have been sold out in recent years as more riders are discovering the beauty of Beta.

BYOB (Build Your Own Beta) is back for 2012! Customers can build their own Beta online by adding suspension settings as well as the accessories he or she desires. Their new Beta will arrive at the closest dealership or a dealer of their choice with all the items installed including a nameplate of whom the bike was built for. There are over 75 accessories to choose from including large tanks, steering stabilizers, shark fins, as well as a host of other Dual Sport goodies.

Beta 350RS Features and Benefits


* Redesigned cylinder head including reinforced camshaft bridge, valve retainers, and updated cam chain tensioner to help reduce engine noise.
* New clutch primary gear and springs for better engagement and clutch action.
* Updated counterbalance bearings for increased reliability.
* Stronger cam chain guides
* Increased oil volume to the engine cam chain for reduced friction.
* New oil drain plug for easier oil changes.
* Offered in 350, 450, and 520 versions for 2012


 45mm Marzocchi front fork valved for Dual Sport use.
 Redesigned frame with extra gussets. This new frame has less flex and has improved stability.
 Striking new red frame with white plastics for 2012
 Over 65 accessories to make your RS yours.
 Exclusive Beta BYOB (Build Your Own Beta) program