2023 BETA 390 RR 4-Stroke

Features

• Exhaust: All four stroke models feature an exhaust header with a long head pipe that improves engine response at low engine speeds and increases torque at mid-range engine speeds for a more tractable power delivery across the entire rev range, letting the rider get them-selves out of toruble more easily or choose to use a higher gear than they normally would, for a more relaxed riding experience
• Traction Control: All 4 stroke Beta Enduro models now boast traction control. Riders can disengage traction control at any time and in either of the engine maps available. Traction control is calibrated differently for each of the two map options, offering the rider a choice of 4 different electronic control configurations
• Engine Maps: advanced electronics take full advantage of the increased torque at low to medium engine speeds made available by the new exhaust header. Four stroke models now feature dedicated new engine management maps that spread the power curve out more uniformaly across the entire usable range of the engine
• Radiator Shrouds: The new Shrouds are narrower than before to give the rider mor freedom of movement, especially when cornering. Designed to be sleek and also contribure to the revised, simple, and essential new look of the bike
• Front Forks: The geoamtry of the oil passages around the fork piston has been modified to eliminate any air in the system to ensure impeccably smoot fork action throughout the entire travel. Resulting in improved rider comfort with more composed and controlled response even in rough terrain conditions
• Rear Linkage: unlike others in the category, Beta RR models have a linkage system in the rear suspension for a more plush trail ride feel with the ability to react to sharp square-edged hits as well
• Electric Start: An electric start for perfect start-up convenience whatever the situation (Back-up kickstarter option available as an accesory)

Engine Specifications

• Type: Single cylinder, 4 –stroke, liquid cooled, 4-valve (Titanium intake and exhaust), cooling fan, electric start. (back up kick starter as an option)
• Bore: 88mm
• Stroke: 63.4mm
• Displacement: 385..6cc
• Compression Ratio: 12.48:1
• Exhaust Valve: Titanium Intake & Exhaust
• Ignition: Dual-Map Kokusan 200w output
• Spark Plug: NGK LKAR8A-9
• Lubrication: Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission
• Fuel System: 42mm Throttle Body w/Dual Injectors
• Traction Control: On-Demand w/ push of a button
• Clutch: Wet Diaphragm-style
• Transmission: 6 Speed
• Final Drive: O-ring chain

Chassis Specifications

• Frame: Molybdenum steel, double cradle w/ quick air filter access
• Wheelbase: 58.7"
• Seat Height: 37"
• Ground Clearance: 12.6"
• Footrest Height: 16.3"
• Dry Weight: 237 lbs (wet weight, no fuel)
• Fuel Tank Capacity: 2.4 US Gallons
• Front Suspension: 48 mm Sachs Open Cartridge with compression, rebound   & spring preload adjustment
• Rear Suspension: Aluminum Body Sachs shock w/adjustable rebound and   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" (Front) 18" (Rear)
• Front/Rear Tire: Maxxis Enduro
• Final Gearing: 3T Front/48T Rear
• Warranty: 6 month Limited Warranty