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2025 Beta EVO 300 4-Stroke

Starting at $8,999

EVO 300 4-Stroke

The 4-stroke model also boasts an engine capacity of 300 cc, and strikes the perfect balance between performance, tractable engine power and overall usability. This engine embraces a completely different approach to riding than its 2-stroke siblings. With plenty of torque and linear, extremely progressive power delivery, this is the perfect bike for the amateur looking for a machine suitable for less challenging competitive use and motorcycle mounting climbing.

ENGINE TYPE
Single cylinder, 4-stroke, 4-valve, liquid-cooled
BORE 84mm
STROKE 53.6mm
DISPLACEMENT 297.3cc
COMPRESSION RATIO 9.7:1
IGNITION
Electronic 12 Volt w/ dual-map switch (aggressive or soft settings)
SPARK PLUG NGK MR7BI-8
LUBRICATION
Internal oil pump w/ cartridge filter
FUEL SYSTEM Mikuni CV
CLUTCH Wet multi-disc
TRANSMISSION 5 Speed
FINAL DRIVE O-ring chain
FRAME
Aluminum beam, single wave Hydro-Formed w/ built in tank
WHEELBASE 51.4″
SEAT HEIGHT 26″
GROUND CLEARANCE 12.2″
FOOTREST HEIGHT 13.6″
DRY WEIGHT 155 lbs
FUEL TANK CAPACITY .75 US Gallons
FRONT SUSPENSION
39mm Ollé w/ hard-coated tubes
REAR SUSPENSION
Adjustable single shock, aluminum bodied, with nitrogen, including linkage
FINAL GEARING 11T Front/42T Rear
FRONT WHEEL TRAVEL 6.5″
REAR WHEEL TRAVEL 7.1″
FRONT BRAKE 185mm rotor w/ 4-piston caliper
REAR BRAKE
160mm rotor w/ twin-piston caliper
FRONT/REAR RIM 21″ (Front) 18″ (Rear)
FRONT/REAR TIRE Dunlop D803
SPECS
*Specifications subject to change without notice. Additional information on all models including manuals, accessories and parts books are available online at www.betausa.com under SUPPORT.
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